Böttner, C., Hoffmann, J. J. L., Unverricht, D., Schmidt, M. , Spiegel, T. , Geersen, J., Müller, T. H. , Karstens, J. , Andresen, K. J., Sander, L., Schneider von Deimling, J. and Schmidt, C. (2024) The Enigmatic Pockmarks of the Sandy Southeastern North Sea. Geochemistry, Geophysics, Geosystems, 25 (11). e2024GC011837. DOI 10.1029/2024GC011837.

Bialik, O., Coletti, G., Berndt, C. , Schmidt, M. and Micallef, A. (2024) Controls on mesophotic carbonate facies and sediment distribution across the Maltese shelf, central Mediterranean Sea. Facies, 70 (4). Art.Nr. 16. DOI 10.1007/s10347-024-00690-1.

Liu, L., Haeckel, M. , Wu, X., Schmidt, M. , Xu, X. and Wu, N. (2024) Carbon budget of methane seepages in the Haiyang 4 Area in the northern slope of the South China sea. Gas Science and Engineering, 128 . Art.Nr. 205398. DOI 10.1016/j.jgsce.2024.205398.

Wu, J. Y., Chen, X. G. , Schmidt, M. , Li, X., Chen, C. T. A. and Ye, Y. (2024) Recycled materials and secondary processes controlled the chemical and isotopic compositions of bubbling gases discharged from two adjacent geothermal springs in the Northern Luzon Arc. Journal of Volcanology and Geothermal Research, 451 . Art.Nr. 10810-8. DOI 10.1016/j.jvolgeores.2024.108108.

Hiebenthal, C. , Gehlert, F. O., Schmidt, M. , Reusch, T. B. H. and Melzner, F. (2024) Long-term culture system for deep-sea mussels Gigantidas childressi. Limnology and Oceanography: Methods, 22 (6). pp. 369-387. DOI 10.1002/lom3.10612.

Spiegel, T. , Diesing, M., Dale, A. W. , Lenz, N. , Schmidt, M. , Sommer, S., Böttner, C., Fuhr, M., Kalapurakkal, H. T., Schulze, C. S. and Wallmann, K. (2024) Modelling mass accumulation rates and 210Pb rain rates in the Skagerrak: lateral sediment transport dominates the sediment input. Frontiers in Marine Science, 11 . Art.Nr. 1331102. DOI 10.3389/fmars.2024.1331102.

Fuhr, M., Wallmann, K. , Dale, A. W. , Kalapurakkal, H. T., Schmidt, M. , Sommer, S., Deusner, C. , Spiegel, T. , Kowalski, J. and Geilert, S. (2024) Alkaline mineral addition to anoxic to hypoxic Baltic Sea sediments as a potentially efficient CO2-removal technique. Frontiers in Climate, 6 . Art.Nr. 1338556. DOI 10.3389/fclim.2024.1338556.

Müller, T. , de Rooij, G., Trauth, N., Schmidt, M. , Badi, H. A. and Aeschbach, W. (2024) Noble gases in groundwater reflect wet-season temperature in an arid, monsoonal, and mountainous environment. Earth and Planetary Science Letters, 626 . Art.Nr. 118534. DOI 10.1016/j.epsl.2023.118534.

Fuhr, M., Wallmann, K. , Dale, A. W. , Diercks, I., Kalapurakkal, H. T., Schmidt, M. , Sommer, S., Böhnke, S., Perner, M. and Geilert, S. (2023) Disentangling artificial and natural benthic weathering in organic rich Baltic Sea sediments. Frontiers in Climate, 5 . Art.Nr. 1245580. DOI 10.3389/fclim.2023.1245580.

Michelsen, N., Friesen, J., Strauch, G., Al-Balushi, Z. M., Bait Said, A. B. A., Al Balushi, H., Schmidt, M. and Müller, T. (2023) Chemical composition of monsoon bulk precipitation in the Salalah area, Oman. Chemical Geology, 635 . Art.Nr. 121621. DOI 10.1016/j.chemgeo.2023.121621.

Müller, T. , Gros, J. , Leibold, P., Al-Balushi, H., Petermann, E., Schmidt, M. , Brückmann, W. , Al Kindi, M. and Al-Abri, O. S. (2023) Autonomous Large-Scale Radon Mapping and Buoyant Plume Modeling Quantify Deep Submarine Groundwater Discharge: A Novel Approach Based on a Self-Sufficient Open Ocean Vehicle. Environmental Science & Technology, 57 (16). pp. 6540-6549. DOI 10.1021/acs.est.3c00786.

Spiegel, T. , Dale, A. W. , Lenz, N. , Schmidt, M. , Sommer, S., Kalapurakkal, H. T., Przibilla, A., Lindhorst, S. and Wallmann, K. (2023) Biogenic silica cycling in the Skagerrak. Frontiers in Marine Science, 10 . Art.Nr. 1141448. DOI 10.3389/fmars.2023.1141448.

Wu, X., Han, X., Wang, Y., Garbe-Schönberg, D., Schmidt, M. , Zhang, Z., Qiu, Z., Zong, T., Zhou, P., Yu, X., Liu, J. and Luo, H. (2023) Geochemistry of vent fluids from the Daxi Vent Field, Carlsberg Ridge, Indian Ocean: Constraints on subseafloor processes beneath a non-transform offset. Marine Geology, 455 . Art.Nr. 106955. DOI 10.1016/j.margeo.2022.106955.

Connelly, D. P., Bull, J. M., Flohr, A., Schaap, A., Koopmans, D., Blackford, J. C., White, P. R., James, R. H., Pearce, C., Lichtschlag, A., Achterberg, E. P. , de Beer, D., Roche, B., Li, J., Saw, K., Alendal, G., Avlesen, H., Brown, R., Borisov, S. M., Böttner, C. , Cazenave, P. W., Chen, B., Dale, A. W. , Dean, M., Dewar, M., Esposito, M., Gros, J. , Hanz, R., Haeckel, M. , Hosking, B., Huvenne, V., Karstens, J. , Le Bas, T., Leighton, T. G., Linke, P. , Loucaides, S., Matter, J. M., Monk, S., Mowlem, M. C., Oleynik, A., Omar, A. M., Peel, K., Provenzano, G., Saleem, U., Schmidt, M. , Schramm, B., Sommer, S., Strong, J., Falcon Suarez, I., Ungerboeck, B., Widdicombe, S., Wright, H. and Yakushev, E. (2022) Assuring the integrity of offshore carbon dioxide storage. Renewable and Sustainable Energy Reviews, 166 . Art.Nr. 112670. DOI 10.1016/j.rser.2022.112670.

Karstens, J. , Schneider von Deimling, J., Berndt, C. , Böttner, C. , Kühn, M. , Reinardy, B. T. I., Ehrhardt, A., Gros, J. , Schramm, B., Klaeschen, D. , Elger, J. , Haeckel, M. , Schmidt, M. , Heinrich, S., Müller, P. and Bense, F. (2022) Formation of the Figge Maar Seafloor Crater During the 1964 B1 Blowout in the German North Sea. Earth Science, Systems and Society (ES3), 2 . Art.Nr. 10053. DOI 10.3389/esss.2022.10053.

Micallef, A. , Saadatkhah, N., Spiteri, J., Rizzo, E., Capozzoli, L., De Martino, G., Pace, L., Burrill, C., Gatt, M., Schmidt, M. and Gupta, S. (2022) Groundwater seepage is a key driver of theater-headed valley formation in limestone. Geology, 50 (6). pp. 686-690. DOI 10.1130/G49938.1.

Fuhr, M., Geilert, S. , Schmidt, M. , Liebetrau, V., Vogt, C., Ledwig, B. and Wallmann, K. (2022) Kinetics of Olivine Weathering in Seawater: An Experimental Study. Frontiers in Climate, 4 . Art.Nr. 831587. DOI 10.3389/fclim.2022.831587.

Hensen, C. , Scholz, F., Liebetrau, V., Kaul, N., Nuzzo, M., Schmidt, M. , Batista, L., Villinger, H. and Terrinha, P. (2022) Oceanic strike-slip faults represent active fluid conduits in the abyssal sub-seafloor. Geology, 50 (2). pp. 189-193. DOI 10.1130/G49344.1.

Lagostina, L., Frandsen, S., MacGregor, B. J., Glombitza, C., Deng, L., Fiskal, A., Li, J., Doll, M., Geilert, S. , Schmidt, M. , Scholz, F., Bernasconi, S. M., Jørgensen, B. B., Hensen, C. , Teske, A. and Lever, M. A. (2021) Interactions between temperature and energy supply drive microbial communities in hydrothermal sediment. Communications Biology, 4 . Art.Nr. 1006. DOI 10.1038/s42003-021-02507-1.

Chen, X. G., Yu, M. Z., Qiu, Z., Loh, P. S., Chen, C. T. A., Garbe-Schönberg, D., Schmidt, M. , Wang, X. and Ye, Y. (2021) High-Ca vent fluids discharged from the Lutao arc volcanic hydrothermal system are associated with albitization and recycling of marine carbonate. Chemical Geology, 585 . Art.Nr. 120583. DOI 10.1016/j.chemgeo.2021.120583.

Lichtschlag, A., Pearce, C. R., Suominen, M., Blackford, J., Borisov, S. M., Bull, J. M., de Beer, D., Dean, M., Esposito, M., Flohr, A., Gros, J. , Haeckel, M. , Huvenne, V. A. I., James, R. H., Koopmans, D., Linke, P. , Mowlem, M., Omar, A. M., Schaap, A., Schmidt, M. , Sommer, S., Strong, J. and Connelly, D. P. (2021) Suitability analysis and revised strategies for marine environmental carbon capture and storage (CCS) monitoring. International Journal of Greenhouse Gas Control, 112 . Art.Nr. 103510. DOI 10.1016/j.ijggc.2021.103510.

Böttner, C. , Callow, B. J., Schramm, B., Gross, F., Geersen, J. , Schmidt, M. , Vasilev, A., Petsinski, P. and Berndt, C. (2021) Focused methane migration formed pipe structures in permeable sandstones: Insights from uncrewed aerial vehicle-based digital outcrop analysis in Varna, Bulgaria. Sedimentology, 68 (6). pp. 2765-2782. DOI 10.1111/sed.12871.

Chen, X. G., Schmidt, M. , Chen, C. L., Duan, W., Jin, A., Chen, C. T. A. and Ye, Y. (2021) Carbon and hydrogen isotope fractionation during aerobic oxidation of short-chain alkanes in experimental incubations of vent fluids. Organic Geochemistry, 158 . Art.Nr. 104269. DOI 10.1016/j.orggeochem.2021.104269.

Esposito, M., Martinez-Cabanas, M., Connelly, D. P., Jasinski, D., Linke, P. , Schmidt, M. and Achterberg, E. P. (2021) Water column baseline assessment for offshore Carbon Dioxide Capture and Storage (CCS) sites: Analysis of field data from the Goldeneye storage complex area. International Journal of Greenhouse Gas Control, 109 . Art.Nr. 103344. DOI 10.1016/j.ijggc.2021.103344.

Gros, J. , Schmidt, M. , Linke, P. , Dötsch, S., Triest, J., Martinez-Cabanas, M., Esposito, M., Dale, A. W. , Sommer, S., Flohr, A., Fone, J., Bull, J. M., Roche, B., Strong, J. A., Saw, K., Brown, R., Koopmans, D. and Wallmann, K. (2021) Quantification of dissolved CO2 plumes at the Goldeneye CO2-release experiment. International Journal of Greenhouse Gas Control, 109 . Art.Nr. 103387. DOI 10.1016/j.ijggc.2021.103387.

Martinez-Cabanas, M., Esposito, M., Gros, J. , Linke, P. , Schmidt, M. , Triest, J. and Achterberg, E. P. (2021) Deviations from environmental baseline: Detection of subsea CO2 release in the water column from real-time measurements at a potential offshore Carbon Dioxide Storage site. International Journal of Greenhouse Gas Control, 109 . Art.Nr. 103369. DOI 10.1016/j.ijggc.2021.103369.

Pape, T., Blumenberg, M., Reitz, A., Scheeder, G., Schmidt, M. , Haeckel, M. , Blinova, V. N., Ivanov, M. K., Sahling, H., Wallmann, K. and Bohrmann, G. (2021) Oil and gas seepage offshore Georgia (Black Sea) – Geochemical evidences for a Paleogene-Neogene hydrocarbon source rock. Marine and Petroleum Geology, 128 . Art.Nr. 104995. DOI 10.1016/j.marpetgeo.2021.104995.

Horstmann, E., Tomonaga, Y., Brennwald, M. S., Schmidt, M. , Liebetrau, V. and Kipfer, R. (2021) Noble gases in sediment pore water yield insights into hydrothermal fluid transport in the northern Guaymas Basin. Marine Geology, 434 . Art.Nr. 106419. DOI 10.1016/j.margeo.2021.106419.

Fallatah, M. M., Kavil, Y. N., Shanas, P. R., Al-Farawati, R., Shaban, Y. A., Orif, M. I., Schmidt, M. , Ghandourah, M. A. and Albarakati, A. (2021) Environmental impact assessment of desalination plants through observations and modeling over Central Red Sea-Yanbu and Rabiq. Arabian Journal of Geosciences, 14 (5). Art.Nr. 403. DOI 10.1007/s12517-021-06729-9.

Dale, A. W. , Sommer, S., Lichtschlag, A., Koopmans, D., Haeckel, M. , Kossel, E. , Deusner, C. , Linke, P. , Scholten, J., Wallmann, K. , van Erk, M. R., Gros, J. , Scholz, F. and Schmidt, M. (2021) Defining a biogeochemical baseline for sediments at Carbon Capture and Storage (CCS) sites: An example from the North Sea (Goldeneye). International Journal of Greenhouse Gas Control, 106 . Art.Nr. 103265. DOI 10.1016/j.ijggc.2021.103265.

Flohr, A., Schaap, A., Achterberg, E. P. , Alendal, G., Arundell, M., Berndt, C. , Blackford, J., Böttner, C. , Borisov, S. M., Brown, R., Bull, J. M., Carter, L., Chen, B., Dale, A. W. , de Beer, D., Dean, M., Deusner, C. , Dewar, M., Durden, J. M., Elsen, S., Esposito, M., Faggetter, M., Fischer, J. P., Gana, M., Gros, J. , Haeckel, M. , Hanz, R., Holtappels, M., Hosking, B., Huvenne, V. A. I., James, R. H., Koopmans, D., Kossel, E. , Leighton, T. G., Li, J., Lichtschlag, A., Linke, P. , Loucaides, S., Martinez-Cabanas, M., Matter, J. M., Mesher, T., Monk, S., Mowlem, M., Oleynik, A., Papadimitriou, S., Paxton, D., Pearce, C. R., Peel, K., Roche, B., Ruhl, H. A., Saleem, U., Sands, C., Saw, K., Schmidt, M. , Sommer, S., Strong, J. A., Triest, J., Ungerböck, B., Walk, J., White, P., Widdicombe, S., Wilson, R. E., Wright, H., Wyatt, J. and Connelly, D. (2021) Towards improved monitoring of offshore carbon storage: A real-world field experiment detecting a controlled sub-seafloor CO2 release. International Journal of Greenhouse Gas Control, 106 . Art.Nr. 103237. DOI 10.1016/j.ijggc.2020.103237.

Micallef, A. , Person, M., Berndt, C. , Bertoni, C., Cohen, D., Dugan, B., Evans, R., Haroon, A. , Hensen, C. , Jegen, M. , Key, K., Kooi, H., Liebetrau, V., Lofi, J., Mailloux, B. J., Martin‐Nagle, R., Michael, H. A., Müller, T. , Schmidt, M. , Schwalenberg, K., Trembath‐Reichert, E., Weymer, B. , Zhang, Y. and Thomas, A. T. (2021) Offshore freshened groundwater in continental margins. Reviews of Geophysics, 59 (1). Art.Nr. e2020RG000706. DOI 10.1029/2020RG000706.

Ruffine, L., Deusner, C. , Haeckel, M. , Kossel, E. , Toucanne, S., Chéron, S., Boissier, A., Schmidt, M. , Donval, J. P., Scholz, F., Guyader, V., Ker, S. and Riboulot, V. (2021) Effects of postglacial seawater intrusion on sediment geochemical characteristics in the Romanian sector of the Black Sea. Marine and Petroleum Geology, 123 . Art.Nr. 104746. DOI 10.1016/j.marpetgeo.2020.104746.

Gasperini, L., Lazar, M., Mazzini, A., Lupi, M., Haddad, A., Hensen, C. , Schmidt, M. , Caracausi, A., Ligi, M. and Polonia, A. (2020) Neotectonics of the Sea of Galilee (northeast Israel): implication for geodynamics and seismicity along the Dead Sea Fault system. Scientific Reports, 10 (11932). DOI 10.1038/s41598-020-67930-6.

Pape, T., Haeckel, M. , Riedel, M. , Kölling, M., Schmidt, M. , Wallmann, K. and Bohrmann, G. (2020) Formation pathways of light hydrocarbons in deep sediments of the Danube deep-sea fan, Western Black Sea. Marine and Petroleum Geology, 122 (Art.Nr. 104627). DOI 10.1016/j.marpetgeo.2020.104627.

Schmidt, C. , Hensen, C. , Hübscher, C., Wallmann, K. , Liebetrau, V., Schmidt, M. , Kutterolf, S. and Hansteen, T. H. (2020) Geochemical characterization of deep-sea sediments on the Azores Plateau – From diagenesis to hydrothermal activity. Marine Geology, 429 (Article number 106291). DOI 10.1016/j.margeo.2020.106291.

Jurikova, H., Ippach, M., Liebetrau, V., Gutjahr, M. , Krause, S. , Büsse, S., Gorb, S., Henkel, D., Hiebenthal, C. , Schmidt, M. , Leipe, T., Laudien, J. and Eisenhauer, A. (2020) Incorporation of minor and trace elements into cultured brachiopods: implications for proxy application with new insights from a biomineralisation model. Geochimica et Cosmochimica Acta, 286 . pp. 418-440. DOI 10.1016/j.gca.2020.07.026.

Böttner, C. , Haeckel, M. , Schmidt, M. , Berndt, C. , Vielstädte, L., Kutsch, J. A., Karstens, J. and Weiß, T. (2020) Greenhouse gas emissions from marine decommissioned hydrocarbon wells: leakage detection, monitoring and mitigation strategies. International Journal of Greenhouse Gas Control, 100 . Article number 103119. DOI 10.1016/j.ijggc.2020.103119.

Geilert, S. , Grasse, P. , Doering, K. , Wallmann, K. , Ehlert, C. , Scholz, F., Frank, M. , Schmidt, M. and Hensen, C. (2020) Impact of ambient conditions on the Si isotope fractionation in marine pore fluids during early diagenesis. Biogeosciences (BG), 17 . pp. 1745-1763. DOI 10.5194/bg-17-1745-2020.

Hoffmann, J. J. L., Schneider von Deimling, J., Schröder, J. F., Schmidt, M. , Held, P., Crutchley, G. J. , Scholten, J. and Gorman, A. R. (2020) Complex eyed pockmarks and submarine groundwater discharge revealed by acoustic data and sediment cores in Eckernförde Bay, SW Baltic Sea. Geochemistry, Geophysics, Geosystems, 21 (4). e2019GC008825. DOI 10.1029/2019GC008825.

Chen, X. G., Yu, M. Z., Loh, P. S., Garbe-Schönberg, D., Qiu, Z., Schmidt, M. , Zhang, H. Y., Chen, C. T. A., Zheng, H. and Ye, Y. (2020) A tidal-influenced hydrothermal system temporarily cooled by a tropical storm. Journal of Volcanology and Geothermal Research, 393 . Art.Nr. 106792. DOI 10.1016/j.jvolgeores.2020.106792.

Kavil, Y. N., Shaban, Y. A., Alelyani, S. S., Al-Farawati, R., Orif, M. I., Ghandourah, M. A., Schmidt, M. , Turki, A. J. and Zobidi, M. (2020) The removal of methylene blue as a remedy of dye-based marine pollution: a photocatalytic perspective. Research on Chemical Intermediates, 46 (1). pp. 755-768. DOI 10.1007/s11164-019-03988-w.

Schmidt, C. , Hensen, C. , Wallmann, K. , Liebetrau, V., Tatzel, M., Schurr, S. L., Kutterolf, S. , Haffert, L., Geilert, S. , Hübscher, C. , Lebas, E. , Heuser, A. , Schmidt, M. , Strauss, H. , Vogl, J. and Hansteen, T. (2019) Origin of high Mg and SO 4 fluids in sediments of the Terceira Rift, Azores – indications for caminite dissolution in a waning hydrothermal system. Geochemistry, Geophysics, Geosystems, 20 . DOI 10.1029/2019GC008525.

Scholz, F., Schmidt, M. , Hensen, C. , Eroglu, S., Geilert, S. , Gutjahr, M. and Liebetrau, V. (2019) Shelf-to-basin iron shuttle in the Guaymas Basin, Gulf of California. Geochimica et Cosmochimica Acta, 261 . pp. 76-92. DOI 10.1016/j.gca.2019.07.006.

Gros, J. , Schmidt, M. , Dale, A. W. , Linke, P. , Vielstädte, L., Bigalke, N., Haeckel, M. , Wallmann, K. and Sommer, S. (2019) Simulating and Quantifying Multiple Natural Subsea CO2 Seeps at Panarea Island (Aeolian Islands, Italy) as a Proxy for Potential Leakage from Subseabed Carbon Storage Sites. Environmental Science & Technology, 53 (17). pp. 10258-10268. DOI 10.1021/acs.est.9b02131.

Bange, H. W. , Kock, A. , Pelz, N., Schmidt, M. , Schütte, F. , Walter, S. , Post, A. F., Jones, B. H. and Kürten, B. (2019) Nitrous oxide in the northern Gulf of Aqaba and the central Red Sea. Deep Sea Research Part II: Topical Studies in Oceanography, 166 . pp. 90-103. DOI 10.1016/j.dsr2.2019.06.015.

Vielstädte, L., Linke, P. , Schmidt, M. , Sommer, S., Haeckel, M. , Braack, M. and Wallmann, K. (2019) Footprint and detectability of a well leaking CO2 in the Central North Sea: Implications from a field experiment and numerical modelling. International Journal of Greenhouse Gas Control, 84 . pp. 190-203. DOI 10.1016/j.ijggc.2019.03.012.

Böttner, C. , Berndt, C. , Reinardy, B. T. I., Geersen, J. , Karstens, J. , Bull, J. M. , Callow, B. J. , Lichtschlag, A. , Schmidt, M. , Elger, J. , Schramm, B. and Haeckel, M. (2019) Pockmarks in the Witch Ground Basin, central North Sea. Geochemistry, Geophysics, Geosystems, 20 (4). pp. 1698-1719. DOI 10.1029/2018GC008068.

Nuzzo, M., Tomonaga, Y. , Schmidt, M. , Valadares, V., Faber, E., Pinero, E., Reitz, A., Haeckel, M. , Tyroller, L., Godinho, E., Kipfer, R., Terrinha, P. G. and Hensen, C. (2019) Formation and migration of hydrocarbons in deeply buried sediments of the Gulf of Cadiz convergent plate boundary - Insights from the hydrocarbon and helium isotope geochemistry of mud volcano fluids. Marine Geology, 410 . pp. 56-69. DOI 10.1016/j.margeo.2019.01.005.

Hensen, C. , Duarte, J. C., Vannucchi, P., Mazzini, A., Lever, M. A., Terrinha, P., Géli, L., Henry, P., Villinger, H., Morgan, J., Schmidt, M. , Gutscher, M. A., Bartolome, R., Tomonaga, Y., Polonia, A., Gràcia, E., Tinivella, U., Lupi, M., Çağatay, M. N., Elvert, M., Sakellariou, D., Matias, L., Kipfer, R., Karageorgis, A. P., Ruffine, L., Liebetrau, V., Pierre, C., Schmidt, C. , Batista, L., Gasperini, L., Burwicz, E. B. , Neres, M. and Nuzzo, M. (2019) Marine Transform Faults and Fracture Zones: A Joint Perspective Integrating Seismicity, Fluid Flow and Life. Frontiers in Earth Science, 7 (Article 39). DOI 10.3389/feart.2019.00039.

Jurikova, H., Liebetrau, V., Gutjahr, M. , Rollion-Bard, C., Hu, M. Y. A., Krause, S., Henkel, D., Hiebenthal, C. , Schmidt, M. , Laudien, J. and Eisenhauer, A. (2019) Boron isotope systematics of cultured brachiopods: response to acidification, vital effects and implications for palaeo-pH reconstruction. Geochimica et Cosmochimica Acta, 248 . pp. 370-386. DOI 10.1016/j.gca.2019.01.015.

Patiris, D. L., Tsabaris, C., Schmidt, M. , Karageorgis, A. P., Prospathopoulos, A. M., Alexakis, S. and Linke, P. (2018) Mobile underwater in situ gamma-ray spectroscopy to localize groundwater emanation from pockmarks in the Eckernförde bay, Germany. Applied Radiation and Isotopes, 140 . pp. 305-313. DOI 10.1016/j.apradiso.2018.07.037.

Geilert, S. , Hensen, C. , Schmidt, M. , Liebetrau, V., Scholz, F., Doll, M., Deng, L., Fiskal, A., Lever, M. A., Su, C. C., Schlömer, S., Sarkar, S. , Thiel, V. and Berndt, C. (2018) On the formation of hydrothermal vents and cold seeps in the Guaymas Basin, Gulf of California . Biogeosciences (BG), 15 (18). pp. 5715-5731. DOI 10.5194/bg-15-5715-2018.

Karstens, J. , Haflidason, H., Becker, L. W. M., Berndt, C. , Rüpke, L. , Planke, S., Liebetrau, V., Schmidt, M. and Mienert, J. (2018) Glacigenic sedimentation pulses triggered post-glacial gas hydrate dissociation. Nature Communications, 9 (Article number 635). DOI 10.1038/s41467-018-03043-z.

Maltby, J., Steinle, L., Löscher, C., Bange, H. W. , Fischer, M. A., Schmidt, M. and Treude, T. (2018) Microbial methanogenesis in the sulfate-reducing zone of sediments in the Eckernförde Bay, SW Baltic Sea. Biogeosciences (BG), 15 . pp. 137-157. DOI 10.5194/bg-15-137-2018.

Polonia, A., Torelli, L., Gasperini, L., Cocchi, L., Muccini, F., Bonatti, E., Hensen, C. , Schmidt, M. , Romano, S., Artoni, A. and Carlini, M. (2017) Lower plate serpentinite diapirism in the Calabrian Arc subduction complex. Nature Communications, 8 (2172). DOI 10.1038/s41467-017-02273-x.

Vielstädte, L., Haeckel, M. , Karstens, J. , Linke, P. , Schmidt, M. , Steinle, L. and Wallmann, K. (2017) Shallow gas migration along hydrocarbon wells – An unconsidered, anthropogenic source of biogenic methane in the North Sea. Environmental Science & Technology, 51 (17). pp. 10262-10268. DOI 10.1021/acs.est.7b02732.

Mishra, S., Wefers, P., Schmidt, M. , Knittel, K., Krüger, M., Stagars, M. H. and Treude, T. (2017) Hydrocarbon Degradation in Caspian Sea Sediment Cores Subjected to Simulated Petroleum Seepage in a Newly Designed Sediment-Oil-Flow-Through System. Frontiers in Microbiology, 8 (763). DOI 10.3389/fmicb.2017.00763.

Brennwald, M. S., Schmidt, M. , Oser, J. and Kipfer, R. (2016) A portable and autonomous mass spectrometric system for on-site environmental gas analysis. Environmental Science & Technology, 50 (24). pp. 13455-13463. DOI 10.1021/acs.est.6b03669.

Geersen, J. , Scholz, F., Linke, P. , Schmidt, M. , Lange, D. , Behrmann, J. H. , Völker, D. and Hensen, C. (2016) Fault zone controlled seafloor methane seepage in the rupture area of the 2010 Maule Earthquake, Central Chile. Geochemistry, Geophysics, Geosystems, 17 (11). pp. 4802-4813. DOI 10.1002/2016GC006498.

McGinnis, D. F., Bilsley, N., Schmidt, M. , Fietzek, P., Bodmer, P., Premke, K., Lorke, A. and Flury, S. (2016) Deconstructing methane emissions from a small Northern-European river: Hydrodynamics and temperature as key drivers. Environmental Science & Technology, 50 (21). pp. 11680-11687. DOI 10.1021/acs.est.6b03268.

Steinle, L., Schmidt, M. , Bryant, L. D., Haeckel, M. , Linke, P. , Sommer, S., Zopfi, J., Lehmann, M. F., Treude, T. and Niemann, H. (2016) Linked sediment and water-column methanotrophy at a man-made gas blowout in the North Sea: Implications for methane budgeting in seasonally stratified shallow seas. Limnology and Oceanography, 61 (S1). S367-S386. DOI 10.1002/lno.10388.

Feldens, P., Schmidt, M. , Mücke, I., Augustin, N. , Al-Farawati, R., Orif, M. and Faber, E. (2016) Expelled subsalt fluids form a pockmark field in the eastern Red Sea. Geo-Marine Letters, 36 (5). pp. 339-352. DOI 10.1007/s00367-016-0451-9.

Berndt, C. , Hensen, C. , Mortera-Gutierrez, C., Sarkar, S. , Geilert, S. , Schmidt, M. , Liebetrau, V., Kipfer, R., Scholz, F., Doll, M., Muff, S., Karstens, J. , Planke, S., Petersen, S. , Böttner, C. , Chi, W. C., Moser, M., Behrendt, R., Fiskal, A., Lever, M. A., Su, C. C., Deng, L., Brennwald, M. S. and Lizarralde, D. (2016) Rifting under steam – how rift magmatism triggers methane venting from sedimentary basins. Geology, 44 (9). pp. 767-770. DOI 10.1130/G38049.1.

Albarakati, A., McGinnis, D. F., Ahmad, F., Linke, P. , Dengler, M. , Feldens, P., Schmidt, M. and Al-Farawati, R. (2016) Thermal small-steps staircase and layer migration in the Atlantis II Deep, Red Sea. Arabian Journal of Geosciences, 9 (392). DOI 10.1007/s12517-016-2399-5.

Rovelli, L., Dengler, M. , Schmidt, M. , Sommer, S., Linke, P. and McGinnis, D. (2016) Thermocline mixing and vertical oxygen fluxes in the stratified central North Sea. Biogeosciences (BG), 13 (5). pp. 1609-1620. DOI 10.5194/bg-13-1609-2016.

Sommer, S., Schmidt, M. and Linke, P. (2015) Continuous inline mapping of a dissolved methane plume at a blowout site in the Central North Sea UK using a membrane inlet mass spectrometer – water column stratification impedes immediate methane release into the atmosphere. Marine and Petroleum Geology, 68 . pp. 766-775. DOI 10.1016/j.marpetgeo.2015.08.020.

Schneider von Deimling, J., Linke, P. , Schmidt, M. and Rehder, G. (2015) Ongoing methane discharge at well site 22/4b (North Sea)and discovery of a spiral vortex bubble plume motion. Marine and Petroleum Geology, 68 . pp. 718-730. DOI 10.1016/j.marpetgeo.2015.07.026.

Vielstädte, L., Karstens, J. , Haeckel, M. , Schmidt, M. , Linke, P. , Reimann, S., Liebetrau, V., McGinnis, D. and Wallmann, K. (2015) Quantification of methane emissions at abandoned gas wells in the Central North Sea. Marine and Petroleum Geology, 68 . pp. 848-860. DOI 10.1016/j.marpetgeo.2015.07.030.

Hensen, C. , Scholz, F., Nuzzo, M., Valadares, V., Gracia, E., Terrinha, P., Liebetrau, V., Kaul, N., Silva, S., Martinez-Loriente, S., Bartolome, R., Pinero, E., Magalhaes, V. H., Schmidt, M. , Weise, S. M., Cunha, M., Hilario, A., Perea, H., Rovelli, L. and Lackschewitz, K. (2015) Strike-slip faults mediate the rise of crustal-derived fluids and mud volcanism in the deep sea. Geology, 43 (4). pp. 339-342. DOI 10.1130/G36359.1.

Linke, P. , Schmidt, M. , Rohleder, M., Al-Barakati, A. and Al-Farawati, R. (2015) Novel online digital video and high-speed data broadcasting via standard coaxial cable onboard marine operating vessels. Marine Technology Society Journal, 49 (1). pp. 7-18. DOI 10.4031/MTSJ.49.1.2.

Schmidt, M. , Linke, P. , Sommer, S., Esser, D. and Cherednichenko, S. (2015) Natural CO2 seeps offshore Panarea – A test site for subsea CO2 leak detection technology. Marine Technology Society Journal, 49 (1). pp. 19-30. DOI 10.4031/MTSJ.49.1.3.

Dekov, V. M., Egueh, N. M., Kamenov, G. D., Bayon, G., Lalonde, S. V., Schmidt, M. , Liebetrau, V., Munnik, F., Fouquet, Y., Tanimizu, M., Awaleh, M. O., Guirreh, I. and Le Gall, B. (2014) Hydrothermal carbonate chimneys from a continental rift (Afar Rift): Mineralogy, geochemistry, and mode of formation. Chemical Geology, 387 . pp. 87-100. DOI 10.1016/j.chemgeo.2014.08.019.

Liebetrau, V., Augustin, N. , Kutterolf, S. , Schmidt, M. , Eisenhauer, A. , Garbe-Schönberg, D. and Weinrebe, W. (2014) Cold-seep-driven carbonate deposits at the Central American forearc: contrasting evolution and timing in escarpment and mound settings. International Journal of Earth Sciences, 103 (7). pp. 1845-1872. DOI 10.1007/s00531-014-1045-2.

Mavromatis, V., Botz, R., Schmidt, M. , Liebetrau, V. and Hensen, C. (2014) Formation of carbonate concretions in surface sediments of two mud mounds offshore Costa Rica: A stable isotope study. International Journal of Earth Sciences, 103 (7). pp. 1831-1844. DOI 10.1007/s00531-012-0843-7.

Maeck, A., DelSontro, T., McGinnis, D. F., Fischer, H., Flury, S., Schmidt, M. , Fietzek, P. and Lorke, A. (2013) Sediment Trapping by Dams Creates Methane Emission Hot Spots. Environmental Science & Technology, 47 (15). pp. 8130-8137. DOI 10.1021/es4003907.

Schmidt, M. , Linke, P. and Esser, D. (2013) Recent Development in IR Sensor Technology for Monitoring Subsea Methane Discharge. Marine Technology Society Journal, 47 (3). pp. 27-36. DOI 10.4031/MTSJ.47.3.8.

Scholz, F., Hensen, C. , Schmidt, M. and Geersen, J. (2013) Submarine weathering of silicate minerals and the extent of pore water freshening at active continental margins. Geochimica et Cosmochimica Acta, 100 . pp. 200-216. DOI 10.1016/j.gca.2012.09.043.

Augustin, N. , Paulick, H., Lackschewitz, K., Eisenhauer, A. , Garbe-Schönberg, D., Kuhn, T., Botz, R. and Schmidt, M. (2012) Alteration at the ultramafic-hosted Logatchev hydrothermal field: Constraints from trace element and Sr-O isotope data. Geochemistry, Geophysics, Geosystems, 13 . QOAE07. DOI 10.1029/2011GC003903.

Karageorgis, A. P., Kanellopoulos, T. D., Mavromatis, V., Anagnostou, C. L., Koutsopoulou, E., Schmidt, M. , Pavlopoulos, K., Tripsanas, E. K. and Hallberg, R. O. (2012) Authigenic carbonate mineral formation in the Pagassitikos palaeolake during the latest Pleistocene, central Greece. Geo-Marine Letters, 33 (1). pp. 13-29. DOI 10.1007/s00367-012-0306-y.

Mavromatis, V., Schmidt, M. , Botz, R., Comas-Bru, L. and Oelkers, E. H. (2012) Experimental quantification of the effect of Mg on calcite–aqueous fluid oxygen isotope fractionation. Chemical Geology, 310-311 . pp. 97-105. DOI 10.1016/j.chemgeo.2012.03.027.

Nuzzo, M., Elvert, M., Schmidt, M. , Scholz, F. , Reitz, A., Hinrichs, K. U. and Hensen, C. (2012) Impact of hot fluid advection on hydrocarbon gas production and seepage in mud volcano sediments of thick Cenozoic deltas. Earth and Planetary Science Letters, 341-344 . pp. 139-157. DOI 10.1016/j.epsl.2012.05.009.

Nuzzo, M., Elvert, M., Schmidt, M. , Scholz, F. , Reitz, A., Hinrichs, K. U. and Hensen, C. (2012) Impact of hot fluid advection on hydrocarbon gas production and seepage in mud volcano sediments of thick Cenozoic deltas (vol 341, pg 139, 2012). Earth and Planetary Science Letters, 357 . p. 421. DOI 10.1016/j.epsl.2012.05.009.

Botz, R., Schmidt, M. , Kus, J., Ostertag-Henning, C., Ehrhardt, A., Olgun, N., Garbe-Schönberg, D. and Scholten, J. (2011) Carbonate recrystallisation and organic matter maturation in heat-affected sediments from the Shaban Deep, Red Sea. Chemical Geology, 280 (1-2). pp. 126-143. DOI 10.1016/j.chemgeo.2010.11.003.

McGinnis, D., Schmidt, M. , DelSontro, T., Themann, S., Rovelli, L., Reitz, A. and Linke, P. (2011) Discovery of a natural CO2 seep in the German North Sea: implications for shallow dissolved gas and seep detection. Journal of Geophysical Research: Oceans, 116 . C03013. DOI 10.1029/2010JC006557.

Mitchell, N. C., Schmidt, M. and Ligi, M. (2011) Comment on “Formation of Thetis Deep metal-rich sediments in the absence of brines, Red Sea” by Pierret et al. (2010). Journal of Geochemical Exploration, 108 (1). pp. 112-113. DOI 10.1016/j.gexplo.2010.09.014.

Reitz, A., Pape, T., Haeckel, M. , Schmidt, M. , Berner, U., Scholz, F., Liebetrau, V., Aloisi, G., Weise, S. M. and Wallmann, K. (2011) Sources of fluids and gases expelled at cold seeps offshore Georgia, eastern Black Sea. Geochimica et Cosmochimica Acta, 75 (11). pp. 3250-3268. DOI 10.1016/j.gca.2011.03.018.

Dekov, V. M., Petersen, S. , Garbe-Schönberg, C. D., Kamenov, G. D., Perner, M. , Kuzmann, E. and Schmidt, M. (2010) Fe–Si-oxyhydroxide deposits at a slow-spreading centre with thickened oceanic crust: the Lilliput hydrothermal field (9°33′S, Mid-Atlantic Ridge). Chemical Geology, 278 . pp. 186-200. DOI 10.1016/j.chemgeo.2010.09.012.

Feseker, T., Brown, K., Blanchet, C., Scholz, F., Nuzzo, M., Reitz, A., Schmidt, M. and Hensen, C. (2010) Active mud volcanoes on the upper slope of the western Nile deep-sea fan - first results from the P362/2 cruise of R/V Poseidon. Geo-Marine Letters, 30 (3/4). pp. 169-186. DOI 10.1007/s00367-010-0192-0.

Dekov, V. M., Hålenius, U., Billström, K., Kamenov, G. D., Munnik, F., Eriksson, L., Dyer, A., Schmidt, M. and Botz, R. (2009) Native Sn-Pb droplets in a zeolitic amygdale (Isle of Mull, Inner Hebrides). Geochimica et Cosmochimica Acta, 73 (10). pp. 2907-2919. DOI 10.1016/j.gca.2009.02.017.

Dekov, V., Scholten, J., Garbe-Schönberg, C. D., Botz, R., Cuadros, J., Schmidt, M. and Stoffers, P. (2008) Hydrothermal sediment alteration at a seafloor vent field: Grimsey Graben, Tjörnes Fracture Zone, north of Iceland. Journal of Geophysical Research: Solid Earth, 113 . B11101. DOI 10.1029/2007JB005526.

Lupton, J., Lilley, M., Butterfield, D., Evans, L., Embley, R., Massoth, G., Christenson, B., Nakamura, K. i. and Schmidt, M. (2008) Venting of a separate CO2-rich gas phase from submarine arc volcanoes: Examples from the Mariana and Tonga-Kermadec arcs. Journal of Geophysical Research: Solid Earth, 113 . B08S12. DOI 10.1029/2007JB005467.

Schacht, U., Wallmann, K. , Kutterolf, S. and Schmidt, M. (2008) Volcanogenic sediment-seawater interactions and the geochemistry of pore waters. Chemical Geology, 249 . pp. 321-338. DOI 10.1016/j.chemgeo.2008.01.026.

Botz, R., Schmidt, M. , Wehner, H., Hufnagel, H. and Stoffers, P. (2007) Organic-rich sediments in brine-filled Shaban- and Kebrit Deeps, Northern Red Sea. Chemical Geology, 244 . pp. 520-553. DOI 10.1016/j.chemgeo.2007.07.004.

Fischer, M., Botz, R., Schmidt, M. , Rockenbauch, K., Garbe-Schönberg, D., Glodny, J., Gerling, P. and Littke, R. (2006) Origins of CO2 in Permian carbonate reservoir rocks (Zechstein, Ca2) of the NW-German Basin (Lower Saxony). Chemical Geology, 227 . pp. 184-213. DOI 10.1016/j.chemgeo.2005.09.014.

Stoffers, P., Worthington, T. J., Schwarz-Schampera, U., Hannington, M. D., Massoth, G. J., Hekinian, R., Schmidt, M. , Lundsten, L. J., Evans, L. J., Vaiomo'unga, R. and Kerby, T. (2006) Submarine volcanoes and high-temperature hydrothermal venting on the Tonga arc, southwest Pacific. Geology, 34 (6). pp. 453-456. DOI 10.1130/g22227.1.

Thießen , O., Schmidt, M. , Theilen , F., Schmitt , M. and Klein , G. (2006) Methane formation and distribution of acoustic turbidity in organic-rich surface sediments in the Arkona Basin, Baltic Sea. Continental Shelf Research, 26 . pp. 2469-2483. DOI 10.1016/j.csr.2006.07.020.

Dekov, V. M., Scholten, J., Botz, R., Garbe-Schönberg, C. D., Thiry, M., Stoffers, P. and Schmidt, M. (2005) Occurrence of kaolinite and mixed-layer kaolinite/smectite in hydrothermal sediments of Grimsey Graben, Tjornes Fracture Zone (north of Iceland). Marine Geology, 215 (3-4). pp. 159-170. DOI 10.1016/j.margeo.2004.12.004.

Mathys , M., Thießen , O., Theilen , F. and Schmidt, M. (2005) Seismic characterisation of gas-rich near surface sediments in the Arkona Basin, Baltic Sea. Marine Geophysical Research, 26 . pp. 207-224. DOI 10.1007/s11001-005-3719-4.

Schmidt, M. , Hensen, C. , Mörz, T., Müller, C., Grevemeyer, I. , Wallmann, K. , Mau, S. and Kaul, N. (2005) Methane hydrate accumulation in "Mound 11" mud volcano, Costa Rica forearc.. Marine Geology, 216 . pp. 83-100. DOI 10.1016/j.margeo.2005.01.001.

Schmidt, M. , Xeflide , S., Botz, R. and Mann , S. (2005) Oxygen isotope fractionation during synthesis of CaMg-carbonate and implications for sedimentary dolomite formation. Geochimica et Cosmochimica Acta, 69 . pp. 4665-4674. DOI 10.1016/j.gca.2005.06.025.

Hensen, C. , Wallmann, K. , Schmidt, M. , Ranero, C. R. and Suess, E. (2004) Fluid expulsion related to mud extrusion off Costa Rica - A window to the subduction slab. Geology, 32 (2). pp. 201-204. DOI 10.1130/G20119.1.

Lackschewitz, K., Devey, C. W. , Stoffers, P., Botz, R., Eisenhauer, A. , Kummetz, M., Schmidt, M. and Singer, A. (2004) Mineralogical, geochemical and isotopic characteristics of hydrothermal alteration processes in the active, submarine, felsic-hosted PACMANUS field, Manus Basin, Papua New Guinea. Geochimica et Cosmochimica Acta, 68 (21). pp. 4405-4427. DOI 10.1016/j.gca.2004.04.016.

Schmidt, M. , Botz , R., Faber , E., Schmitt , M., Poggenburg , J., Garbe-Schönberg, D. and Stoffers , P. (2003) High-resolution methane profiles across anoxic brine-seawater boundaries in the Atlantis-II, Discovery, and Kebrit deeps (Red Sea). Chemical Geology, 200 . pp. 359-376. DOI 10.1016/S0009-2541(03)00206-7.

Botz , R., Wehner , H., Schmitt, M., Worthington , T., Schmidt, M. and Stoffers , P. (2002) Thermogenic hydrocarbons from the offshore Calypso hydrothermal field, Bay of Plenty, New Zealand. Chemical Geology, 186 (3/4). pp. 235-248. DOI 10.1016/S0009-2541(01)00418-1.

Eder , W., Schmidt, M. , Koch, M., Garbe-Schönberg, D. and Huber , R. (2002) Prokaryotic phylogenetic diversity and geochemical investigations of the brine-seawater interface of the Shaban Deep, Red Sea. Environmental Microbiology, 4 (11). pp. 758-763.

Schmidt, M. , Botz , R., Winn , K., Stoffers , P., Thiessen , O. and Herzig, P. (2002) Seeping hydrocarbons and related carbonate mineralisations in sediments south of Lihir Island (New Ireland fore arc basin, Papua New Guinea). Chemical Geology, 186 (3/4). pp. 249-264. DOI 10.1016/S0009-2541(01)00419-3.

Eder , W., Jahnke , L. L., Schmidt, M. and Hubert , R. (2001) Microbial diversity of the brine-seawater interface of the Kebrit Deep, Red Sea, studied via 16S rRNA gene sequences and cultivation methods. Applied and Environmental Microbiology, 67 (7). pp. 3077-3085. DOI 10.1128/AEM.67.7.3077–3085.2001.

Hannington, M. D., Herzig, P., Stoffers, P., Scholten, J., Botz, R., Garbe-Schönberg, D., Jonasson, I. R., Roest, W., Hauzel, B., Hissmann, K., Huber, R., Kristjansson, J. K., Krüger, O., Marteinsson, V., Petursdottir, S. K., Preissler, H., Schauer, J., Schmidt, M. , Thiessen, O. and Zimmerer, M. (2001) First observations of high-temperature submarine hydrothermal vents and massive anhydrite deposits off the north coast of Iceland. Marine Geology, 177 (3-4). pp. 199-220. DOI 10.1016/S0025-3227(01)00172-4.

Riedel, C., Schmidt, M. , Botz, R. and Theilen, F. (2001) The Grimsey hydrothermal field offshore North Iceland: crustal structure, faulting and related gas venting. Earth and Planetary Science Letters, 193 (3-4). pp. 409-421. DOI 10.1016/s0012-821x(01)00519-2.

Schmidt, M. , Botz, R., Rickert, D., Bohrmann, G., Hall , S. R. and Mann , S. (2001) Oxygen isotopes of marine diatoms and relations to opal-A maturation. Geochimica et Cosmochimica Acta, 65 . pp. 201-211. DOI 10.1016/s0016-7037(00)00534-2.

Winckler , G., Kipfer , R., Aeschbach - Hertig, W., Botz, R., Schmidt, M. , Schuler , S. and Bayer , R. (2000) Sub sea floor boiling of Red Sea Brines - New indication from noble gas data. Geochimica et Cosmochimica Acta, 64 . 1567-1575. DOI 10.1016/s0016-7037(99)00441-x.

Botz, R., Winckler , G., Bayer , R., Schmitt , M., Schmidt, M. , Stoffers, P., Garbe-Schönberg, D. and Kristjansson , J. K. (1999) Origin of trace gases in submarine hydrothermal vents of the Kolbeinsey Ridge, North Iceland. Earth and Planetary Science Letters, 171 (1). pp. 83-93. DOI 10.1016/s0012-821x(99)00128-4.

Faber , E., Botz , R., Poggenburg , J., Schmidt, M. , Stoffers , P. and Hartmann , M. (1998) Methane in Red Sea brines. Organic Geochemistry, 29 (1-3). pp. 363-379. DOI 10.1016/S0146-6380(98)00155-7.

Nähr , T., Botz , R., Bohrmann , G. and Schmidt, M. (1998) Oxygen isotopic composition of low-temperature authigenic clinoptilolite. Earth and Planetary Science Letters, 160 . 369-381. DOI 10.1016/S0012-821X(98)00097-1.

Schmidt, M. , Botz , R., Stoffers , P., Anders , T. and Bohrmann , G. (1997) Oxygen isotopes in marine diatoms: a comparative study of analytical techniques and new results on the isotope fractionation during phytoplankton growth. Geochimica et Cosmochimica Acta, 61 . pp. 2275-2280. DOI 10.1016/S0016-7037(97)00081-1.

Schindler , R. N., Dethlefs , J. and Schmidt, M. (1996) Some Results on the Mechanism of the Reaction between O(3P)-Atoms and HOCl. An Experimental and Ab Initio Model Study. Berichte der Bunsengesellschaft für Physikalische Chemie, 100 . pp. 1242-1249. DOI 10.1002/bbpc.19961000723.

Benter , T., Feldmann , C., Kirchner , U., Schmidt, M. , Schmidt, S. and Schindler , R. N. (1995) UV/VIS-absorption Spectra of HOBr and CH3OBr; Br(2P3/2) Atom Yields in the Photolysis of HOBr. Berichte der Bunsengesellschaft für Physikalische Chemie, 99 . pp. 1144-1147.

Jungkamp , T. P. W., Kirchner , U., Schmidt, M. and Schindler , R. N. (1995) UV Absorption Cross Section Data for the Hypochlorites ROCl (R=H, CH3, C2H5, i-C3H7, tert-C4H9). Journal of Photochemistry and Photobiology / A, Chemistry, 91 (1). pp. 1-6. DOI 10.1016/1010-6030(95)04074-P.

Chen, X., Schmidt, M. , Ono, S., Chen, C. A. and Ye, Y. (Submitted) Abiotic Hydrocarbons Discharge from A Felsic Rock-Hosted Hydrothermal System. Preprints, 2020 (2020040475).

Faber, E., Schmidt, M. and Feyzullayev, A. (2015) Geochemical Hydrocarbon Exploration – Insights from Stable Isotope Models. OIL GAS European Magazine, 41 (2). pp. 93-98.

Augustin, N. , Schmidt, M. , Devey, C. W. , Al-Aidaroos, A. M., Kürten, B., Eisenhauer, A. , Brückmann, W., Dengler, M. , van der Zwan, F. M. , Feldens, P., Kwasnitschka, T., Bantan, R. A., Basaham, A., Metz, D., Hagemann, J., Al-Dhouyan, I. O., Al-Farawati, R., Al-Haj, A., Al-Nomani, S., Al-Nuwairah, M., Al-Mehana, W., Al-Sofyani, A., Al-Yousef, S., Al-Barakati, A., Audritz, S., Bauersachs, T., Bruss, G., Elgarafi, A. E., El-Sherbini, M., Haredy, R., Hissmann, K., Jamal, M., Khomayis, H. S., Kotob, A., Laurila, T., Linke, P. , McGinnis, D., Orif, I. M., Pena-Garcia, D., Raddatz, J., Sas, A., Sawall, Y., Schauer, J., Sommer, S., Winder, M. and Walther, S. (2014) The Jeddah Transect Project: Extensive mapping of the Red Sea Rift. InterRidge News, 22 (November). pp. 68-73.

Scholten, J., Theilen, F., Herzig, P. and Schmidt, M. (1999) Hydrothermal activity along the Tjoernes Fracture Zone, north of Iceland: Initial results of the R/V Poseidon cruises 252 and 253. InterRidge News, 8 (2). pp. 28-31.

Antunes, A., Kaartvedt, S. and Schmidt, M. (2019) Geochemistry and Life at the Interfaces of Brine-Filled Deeps in the Red Sea. In: Oceanographic and Biological Aspects of the Red Sea. , ed. by Rasul, N. M. A. and Stewart, I. C. F.. Springer Oceanography Book series . Springer, Cham, pp. 185-194. DOI 10.1007/978-3-319-99417-8.

Schmidt, M. , Al-Farawati, R. and Botz, R. (2015) Geochemical classification of brine-filled Red Sea deeps. In: The Red Sea: The Formation, Morphology, Oceanography and Environment of a Young Ocean Basin. , ed. by Rasul, N. and Stewart, I. C. F.. Springer Earth System Sciences . Springer, Berlin, pp. 219-233. ISBN 978-3-662-45200-4 DOI 10.1007/978-3-662-45201-1_13.

Esser, D., Schmidt, M. and Linke, P. (2013) HISEM – Ein „High Sensitive Deep Sea Methane Monitoring“ System für Unterwasser-Leckagemessungen. In: Tagungsband der Statustagung Maritime Technologien 2013. . Schriftenreihe Projektträger Jülich . Forschungszentrum, Jülich, pp. 145-146. ISBN 978-3-89336-922-5

Schmidt, M. , Sommer, S., Linke, P. , Cherednichenko, S., Bodenbinder, A. and Bryant, L. (2012) Water column and sediment gas geochemistry. In: RV Celtic Explorer EUROFLEETS cruise report CE12010 - ECO2@NorthSea : 20.07. – 06.08.2012, Bremerhaven - Hamburg. , ed. by Linke, P.. GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, Kiel, pp. 8-27. DOI 10.3289/GEOMAR_REP_NS_4_2012.

Vielstädte, L., Sommer, S., Schmidt, M. , Linke, P. and Haeckel, M. (2012) Gas release experiment. In: RV Celtic Explorer EUROFLEETS cruise report CE12010 - ECO2@NorthSea : 20.07. – 06.08.2012, Bremerhaven - Hamburg. , ed. by Linke, P.. GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, Kiel, pp. 28-32. DOI 10.3289/GEOMAR_REP_NS_4_2012.

Mörz, T., Fekete, N., Kopf, A. J., Brückmann, W., Kreitner, S., Hühnerbach, V., Masson, D. G., Hepp, D. A., Schmidt, M. , Kutterolf, S. , Sahling, H., Abegg, F., Spiess, V., Suess, E. and Ranero, C. R. (2005) Styles and productivity of mud diapirism along the Middle American Margin, Part II: Mound Culebra and Mounds 11 and 12. In: Mud volcanoes, geodynamics and seismicity. , ed. by Martinelli, G. and Panahi, B.. NATO science series : Series 4, Earth and environmental sciences, 51 . Springer, Dordrecht, pp. 49-76. ISBN 1-402-03203-X DOI 10.1007/1-4020-3204-8_5.

Thießen, O., Schmidt, M. , Botz, R., Schmitt, M. and Stoffers, P. (2004) Methane venting into the water column above the Pitcairn and Society-Austral Seamounts, South Pacific. In: Oceanic Hotspots. , ed. by Hekinian, R., Stoffers, P. and Cheminee, J. L.. Springer, Berlin, pp. 407-426. ISBN 978-3-642-62290-8 DOI 10.1007/978-3-642-18782-7_14.

Fuhr, M., Geilert, S. , Schmidt, M. and Wallmann, K. (2021) Kinetics of olivine weathering in seawater: an experimental study. [Talk] In: Goldschmidt Virtual Conference 2021. , 04.-09.07.2021, Virtual .

Horstmann, E., Tomonaga, Y., Brennwald, M., Liebetrau, V., Schmidt, M. and Kipfer, R. (2021) Hydrothermal Activity in the Pacific and Atlantic Ocean – How Noble Gases Can Help to Identify Different Regimes of Hydrothermal Transport in Ocean Sediments. [Talk] In: Goldschmidt Virtual Conference 2021. , 04.-09.07.2021, Virtual .

Gros, J. , Schmidt, M. , Linke, P. , Elsen, S., Triest, J., Fone, J., Bull, J., Roche, B., Flohr, A., Strong, A., Saw, K., Brown, R., Koopmans, D. and Schaap, A. (2020) Leakage monitoring and quantification by tracing and modelling dissolved CO2 plumes at the Goldeneye CO2 release experiment. [Talk] In: International Workshop on Offshore Geologic CO2 Storage and STEMM-CCS Open Science Meeting 2020. , 11.2.-12.2.2020, Bergen, Norway .

Geilert, S. , Hensen, C. , Doering, K., Grasse, P. , Ehlert, C., Liebetrau, V., Scholz, F., Schmidt, M. and Frank, M. (2019) Marine Reverse Silicate Weathering Traced by Silicon Isotopes. [Talk] In: Goldschmidt Conference 2019. , 18.-23.08.2019, Barcelona, Spain .

Gros, J. , Schmidt, M. , Dale, A. W. , Linke, P. , Vielstädte, L., Bigalke, N., Haeckel, M. , Wallmann, K. and Sommer, S. (2019) Simulating and Quantifying Panarea’s Multiple Offshore CO2 Seeps as a Natural Proxy for Potential Leakage from Sub-Seabed CO2 Storage Sites. [Talk] In: STEMM‐CCS Early Career Researcher Conference. , 04.-06.11.2019, Winchester, UK .

Horstmann, E., Tomonaga, Y., Brennwald, M., Schmidt, M. , Liebetrau, V. and Kipfer, R. (2019) Noble Gas Composition of Sediment Pore Water at a Hydrothermal Vent Site. [Talk] In: Goldschmidt Conference 2019. , 18.-23.08.2019, Barcelona, Spain .

Jurikova, H., Ippach, M., Liebetrau, V., Gutjahr, M. , Krause, S., Büsse, S., Gorb, S., Henkel, D., Hiebenthal, C. , Schmidt, M. , Leipe, T., Laudien, J., Rollion-Bard, C. and Eisenhauer, A. (2019) Element Partitioning in Brachiopods – Implications for Proxy Use and Biomineralisation. [Talk] In: Goldschmidt Conference 2019. , 18.-23.08.2019, Barcelona, Spain .

Leibold, P. , Al Abri, O., Al Maawali, W., Al Sheibany, W., Al Balushi, H., Schmidt, M. and Brückmann, W. (2019) Salalah SV3 campaign (D4.4) Wave Glider SV3 hunting for submarine freshwater discharge offshore Salalah. [Talk] In: IATI 5. Joint Meeting Workshop. , 03.02.2019, Muscat, Oman .

Müller, T., Al Balushi, H., Schmidt, M. , Leibold, P., Al Abri, O. and Brückmann, W. (2019) Freshwater Ocean aquifers – seasonal triggers: a case study from southern Oman. [Talk] In: Workshop on “Onshore-offshore groundwater connections". , 05.12.2019, Texas A&M University, College of Geosciences, College Station TX, U.S. .

Böttner, C. , Schramm, B., Berndt, C. , Karstens, J. , Schmidt, M. , Haeckel, M. , Elger, J. , Callow, B. J., Bull, J. M., Lichtschlag, A. and Reinhardy, B. (2018) Pockmark formation in the Witch Ground Basin, central North Sea. [Talk] In: EGU General Assembly 2018. , 08.-13.04.2018, Vienna, Austria .

Brückmann, W., Leibold, P., Schmidt, M. and Al Abri, O. (2018) USVs for Environmental Monitoring - Wave Gliders hunting for submarine freshwater discharge offshore Oman. [Talk] In: 1. Annual Workshop on Dual Use Marine Technologies in Cyprus. , 08.11.-09.11.2018, Limassol, Cyprus .

Jurikova, H., Liebetrau, V., Gutjahr, M. , Krause, S., Büsse, S., Gorb, S. N., Henkel, D., Hiebenthal, C. , Schmidt, M. , Leipe, T., Laudien, J. and Eisenhauer, A. (2018) Major and trace element composition and microstructure of cultured brachiopods – new proxies?. [Talk] In: 8. International Brachiopod Congress 2018. , 11.-14.09.2018, Milano, Italy .

Polonia, A., Torelli, L., Gasperini, L., Cocchi, L., Muccini, F., Bonatti, E., Hensen, C. , Schmidt, M. , Romano, S., Artoni, A. and Carlini, M. (2018) Lower plate serpentinite diapirism in the Calabrian Arc subduction complex. [Talk] In: EGU General Assembly 2018. , 08.-13.04.2018, Vienna, Austria .

Schmidt, C. , Hensen, C. , Schmidt, M. , Kutterolf, S. , Hübscher, C. and Hansteen, T. (2018) Hydrothermal pore fluid characterization of the Azores Plateau. [Talk] In: EGU General Assembly 2018. , 08.-13.04.2018, Vienna, Austria .

Horstmann, E., Tomonaga, Y., Brennwald, M. S., Schmidt, M. and Kipfer, R. (2017) Noble gas analysis of sediment pore fluids near a black smoker. [Talk] In: COST FLOWS Meeting 2017. , 09.10-11.10.2017, Granada, Spain .

Horstmann, E., Tomonaga, Y., Brennwald, M. S., Schmidt, M. and Kipfer, R. (2017) Noble gas analysis of sediment pore fluids near black smoker. [Talk] In: Goldschmidt Conference 2017. , 13.-18.08.2017, Paris, France .

Nuzzo, M., Tomonaga, Y., Schmidt, M. , Faber, E., Valadares, V., Pinero, E., Reitz, A., Tyroller, L., Brennwald, M. S., Kipfer, R., Terrinha, P. and Hensen, C. (2017) Hydrocarbon and noble gas geochemical survey in a mud volcano province: Insights into oil-water-gas interactions and gas hydrate occurrences in the subsurface. [Talk] In: Applications of Analytical Techniques to Petroleum System Problems Conference. , 28.02.- 01.03.2017, London, United Kingdom .

Patiris, D. L., Tsabaris, C., Schmidt, M. , Karageorgis, A. P., Prospathopoulos, A., Alexakis, S. and Linke, P. (2017) Submarine pockmarks area localization using in-situ radio-tracing technique in Eckernförde bay, Germany. [Talk] In: 26. Annual Symposium of Hellenic Nuclear Physics Society. , 09.06.-10.06.2017, Anavyssos, Greece .

Vielstädte, L., Haeckel, M. , Karstens, J. , Linke, P. , Steinle, L., Schmidt, M. and Wallmann, K. (2017) Dealing with legacy wells: Leakage of shallow gas along hydrocarbon wells in the North Sea. [Talk] In: 11. IEAGHG Monitoring Network Meeting. , 13.-15.06.2017, Traverse City, USA .

Antunes, A., Kaartvedt, S. and Schmidt, M. (2016) Geochemistry and life at the interfaces of brine-filled deeps in the Red Sea. [Talk] In: Workshop on the Geological Setting, Oceanography, and Environment of the Red Sea. , 14.-16.02.2016, Jeddah, Saudi Arabia .

Brennwald, M. S., Kipfer, R. and Schmidt, M. (2016) The story of real-time noble gas analysis in the field, black smokers and the Paleocene-Eocene-Thermal Maximum. [Talk] In: Goldschmidt Conference 2016. , 26.06-01.07.2016, Yokohama, Japan .

Brennwald, M. S., Schmidt, M. and Kipfer, R. (2016) The story of Mini-Ruedi-Rüssel (real-time noble gas analysis in the field), Black Smokers, and the Paleocene-Eocene-Thermal Maximum. [Talk] In: Developments In Noble Gas Understanding and Expertise, DINGUE 2016 Conference. , 13.-15.04.2016, Nancy, France .

Schmidt, M. (2016) IATI-SGD Pilot Project – Overview. [Talk] In: Workshop on "Submarine Groundwater discharge". , 25.05.2016, Muscat, Sultanate of Oman .

Schmidt, M. , Haeckel, M. , Sommer, S., Linke, P. , Greinert, J. and Wallmann, K. (2016) Marine CO2 and Methane Seeps. [Talk] In: CoMet Science Workshop, DLR Institut für Physik der Atmosphäre. , 30.11.-02.12.2016, Oberpfaffenhofen, Germany .

Vielstädte, L., Haeckel, M. , Karstens, J. , Linke, P. , Schmidt, M. , Steinle, L. and Wallmann, K. (2016) Leaky hydrocarbon wells are an unconsidered source for biogenic methane in the North Sea. [Talk] In: AGU Fall Meeting 2016. , 12.-16.12.2016, San Francisco, USA .

Esser, D., Schmidt, M. , Linke, P. and Themann, S. (2014) Carbon Capture and Storage MMV - Lessons learned from Offshore Case Studies. [Talk] In: Subsea Leak Detection Symposium 2014. , 18.-19.11.2014, Houston, USA .

Rehder, G., Schneider von Deimling, J., Schmidt, M. , Leifer, I. and Linke, P. (2014) Gasblowout Well 22-4b, nördliche Nordsee: Neue Erkenntnis zur Ausbreitung vehementer Gasaustritte. [Talk] In: Meeressymposium BSH. , 03.-04.06.2014, Hamburg, Germany .

Vielstädte, L., Karstens, J. , Haeckel, M. , Schmidt, M. , Linke, P. , Reimann, S., Liebetrau, V. and Wallmann, K. (2014) Anthropogenic Methane Emissions from Abandoned Oil and Gas Wells in the North Sea- How much Methane is Leaking into the Ocean and finally into the Atmosphere?. [Talk] In: GIMS12, International Conference on Gas in Marine Sediments. , 01.-04.09.2014, Taipei, Taiwan .

Esser, D., Schmidt, M. and Linke, P. (2013) Applications and Systems for Measuring Dissolved Gasses. [Talk] In: ADCP in Action. , 26.06.2013, Hangzhou, China .

Haeckel, M. , Wallmann, K. , Schmidt, M. , Liebetrau, V., Sommer, S., Schroller, D., Schönfeld, J., Karstens, J. and Berndt, C. (2013) Fluid expulsion at a 3-km long fracture system in the Northern North Sea – geochemical constraints on the origin of gas and water . [Talk] In: AGU Fall Meeting 2013. , 09.-13.12.2013, San Francisco, USA .

Linke, P. , Schmidt, M. , Sommer, S., Schneider von Deimling, J. and Haeckel, M. (2013) Monitoring technologies & in situ measurements at the seafloor. [Talk] In: Subsea Leak Detection Symposium. , 19.-20.11.2013, Houston, USA .

Linke, P. , Schmidt, M. , Wood, M. and Esser, D. (2013) Novel modular observatory for process studies at leaky abandoned wells. [Talk] In: Subsea Leak Detection Symposium. , 19.-20.11.2013, Houston, USA .

Schmidt, M. , Al Farawati, R. and Botz, R. (2013) Geochemical classification of brine-filled Red Sea Deeps. [Talk] In: Workshop on the Red Sea: Its Origin, Structure and Environment. , 02.-05.02.2013, Jeddah, Saudi Arabia .

Steeb, P., Linke, P. , Liebetrau, V., Schmidt, M. and Treude, T. (2013) Anaerobic oxidation of methane in the Concepcion Methane Seep Area, Chilean continental margin. [Talk] In: SONNE Statusseminar 2013. , 14.-15.02.2013, Kiel, Germany .

Vielstädte, L., Haeckel, M. , Linke, P. , McGinnis, D., Schmidt, M. , Sommer, S. and Wallmann, K. J. G. (2013) Footprint of CO2 leaking from the seabed: insights from a gas release experiment. [Talk] In: International Workshop on Leakage effects from natural analogues. , 13.05.2013, Bergen, Norway .

Vielstädte, L., Linke, P. , Schmidt, M. , Sommer, S., Wallmann, K. , McGinnis, D. and Haeckel, M. (2013) The footprint of CO2 leakage in the water-column: Insights from numerical modeling based on a North Sea gas release experiment. [Talk] In: AGU Fall Meeting 2013. , 09.-13.12.2013, San Francisco, USA .

Esser, D. and Schmidt, M. (2012) How to identify complex gas and fluid leakages. [Talk] In: SALDS Subsea and Arctic Leak Detection Symposium. , 5.-6.12.2012, Houston, Texas, USA .

Faber, E. and Schmidt, M. (2012) Geochemical hydrocarbon exploration - technology and methods. [Talk] In: 1. International Conference, Ultra Deep Hydrocarbon Potential : Future Resources - Reality and Prediction. , 11.06.-13.06.2012, Baku, Azerbaijan .

Feldens, P., Mitchell, N., Schmidt, M. and Basaham, A. (2012) Salt Glaciers in the Red Sea. [Talk] In: EGU General Assembly 2012. , 22.-27.04.2012, Vienna, Austria .

Feldens, P., Schmidt, M. , Mitchell, N. and Basaham, A. S. (2012) Subsea salt flows in the Atlantis II Deep and Tethis Deep, Red Sea. [Talk] In: EGU General Assembly 2012. , 22.04.-27.04.2012, Vienna, Austria .

Maeck, A., Flury, S., DelSontro, T., Schmidt, M. , McGinnis, D., Fischer, H., Fietzek, P. and Lorke, A. (2012) Identifying hot-spot methane emission sites in an impounded river. [Talk] In: EGU General Assembly 2012. , 22.04.-27.04.2012, Vienna, Austria .

Nuzzo, M., Hensen, C. , Scholz, F., Schmidt, M. , Pinero, E., Pinheiro, L. M., Magalhaes, V., Valadares, V. and Terrinha, P. (2012) Going out of the Gulf of Cadiz - mud volcanoes and gas hydrates. Fluidos portadores de hidrocarbonetos em limites convergentes de placas litosféricas. [Talk] In: 46. Brazilian Geological Congress. , 30.09.-05.10.2012, Santos, Brazil .

Schmidt, M. , Farawati, R., Sommer, S., Linke, P. and Botz, R. (2012) Biogeochemistry of Red Sea brine. [Talk] In: JTP Scientific Meeting. , 28.11.2012, Jeddah, Saudi Arabia .

Sommer, S., Schmidt, M. and Linke, P. (2012) Dissolved methane pluming mapping using Membrane Inlet Mass-Spectrometry (MIMS) at a blowout site in the North Sea. [Talk] In: EGU General Assembly 2012. , 22.04.-27.04.2012, Vienna, Austria . Geophysical Research Abstracts. ; p. 11118 .

Steeb, P., Linke, P. , Scholz, F., Schmidt, M. , Liebetrau, V. and Treude, T. (2012) Anaerobic oxidation of methane in the Concepcion Methane Seep Area, Chilean continental margin. [Talk] In: EGU General Assembly 2012. , 22.04.-27.04.2012, Vienna, Austria . Geophysical Research Abstracts. ; p. 12396 .

Treude, T. , Steeb, P., Linke, P. , Schmidt, M. and Liebetrau, V. (2012) Biogeochemical characterization of newly discovered seeps in the Concepción Methane Seep Area, Chile. [Talk] In: The Lübeck Retreat, Collaborative Research SFB 574 Volatiles and Fluids in Subduction Zones: Climate Feedback and Trigger Mechanisms for Natural Disasters. , 23.-25.05.2012, Lübeck . The Lübeck Retreat: final colloquium of SFB 574; May 23-25, 2012: program & abstracts. ; pp. 33-34 .

Hensen, C. , Scholz, F., Reitz, A., Liebetrau, V., Haeckel, M. , Schmidt, M. , Wallmann, K. J. G. and Romer, R. L. (2011) Geochemistry of cold seeps - Fluid sources and systematic. [Talk] In: Goldschmidt Conference 2011. , 14.-19.08.2011, Prague, Czech Republic .

Liebetrau, V., Haeckel, M. , Schmidt, M. , Wallmann, K. and Romer, R. L. (2011) Geochemistry of cold seeps - Fluid sources and systematics. [Talk] In: Goldschmidt Conference 2011. , 14.-19.08.2011, Prague, Czech Republic .

Maeck, A., Flury, S., DelSontro, T., Schmidt, M. , McGinnis, D., Fischer, H. and Lorke, A. (2011) Methane emissions from rivers – Results from sampling a 93-km longitudinal transect of river Saar, Germany. [Talk] In: 15. Workshop on Physical Processes in Natural Waters. , 11.-14.07.2011, Burlington, Canada .

Rovelli, L., Dengler, M. , Schmidt, M. , Sommer, S., Linke, P. and McGinnis, D. (2011) Turbulent mixing in the central North sea: sources and implications for vertical transport of dissolved gases during summertime. [Talk] In: 5. Warnemünde Turbulence Days on Turbulence and Mixing in Estuaries and Coastal Seas. , 05.09.-08.09.2011, Vilm .

Schmidt, M. , Linke, P. , Fietzek, P., Esser, D. and Themann, S. (2011) How to identify “complex” offshore gas and fluid seepage – Accessories from the geochemical and hydroacoustic toolbox. [Talk] In: ADCPs in Action Conference. , 02.-05.10.2011, San Diego, USA .

Berner, U., Pape, T., Reitz, A., Schmidt, M. , Ivanov, M. K. and Bohrmann, G. (2010) Hydrocarbons of cold seeps of the Black Sea offshore Georgia as indicators of subsurface source and maturity. [Talk] In: AAPG European Region Annual Conference 2010. , 17.-19.10.2010, Kiev, Ukraine .

Berner, U., Pape, T., Reitz, A., Schmidt, M. , Ivanov, M. K. and Bohrmann, G. (2010) Hydrocarbons of cold seeps of the Black Sea offshore Georgia as indicators of subsurface source and maturity. [Talk] In: DGG-Tagung GeoDarmstadt 2010. , 10.-13.10.2010, Darmstadt .

Hensen, C. , Wallmann, K. , Schmidt, M. , Liebetrau, V. and Scholz, F. (2010) Sources of cold seep fluids at the Central American convergent margin. [Talk] In: SFB 574 Subduction Workshop. , 04.-07.11.2010, Pucon, Chile .

Rovelli, L., Dengler, M. , Schafstall, J., Schmidt, M. , Sommer, S., Linke, P. and McGinnis, D. and University of Iceland (2010) Physical characterization of oxygen fluxes across the water column in the central North Sea. [Talk] In: 14th International Workshop on Physical Processes in Natural Waters (PPNW). , 28.06.-01.07.2010, Reykjavik, Iceland . Conference Proceedings / 14th International Workshop on Physical Processes in Natural Waters, Reykjavík, Iceland, June 28 to July 1, 2010 / Ed.: Hrund Ólöf Andradóttir. ; pp. 145-146 .

Karaca, D., Wallmann, K. , Schmidt, M. , Liebetrau, V., Fehn, U., Garbe-Schönberg, C. D. and Brückmann, W. (2007) Geochemistry of cold vent fluids at the Central American Convergent Margin. [Talk] In: Goldschmidt Conference. , Köln .

Mavromatis, V., Comas, L., Schmidt, M. , Hensen, C. , Liebetrau, V. and Wallmann, K. (2007) Laboratory precipitated Mg-Calcite compared to authigenic carbonate formed at mud mounds (Costa Rica/Nicaragua Fore Arc). [Talk] In: EGU General Assembly. , 15.- 20.04, Vienna, Austria ; p. 4168 . Geophysical Research Abstracts (9).

Mavromatis, V., Liebetrau, V., Comas, L., Schmidt, M. , Hensen, C. and Wallmann, K. (2007) Precipitation of artificial Mg-Calcite compared to authigenic carbonate formed at mud mounds (Costa Rica/Nicaragua Fore Arc). [Talk] In: LAK 2007: 20th Colloquium on Latin American Earth Sciences. , 11.- 13.04, Kiel, Germany .

Hensen, C. , Wallmann, K. , Schmidt, M. , Suess, E., Ranero, C. and Brückmann, W. (2005) Fluid Flow and Gas Hydrate Dynamics at Costa Rica Convergent Margin. [Talk] In: EGU. , Vienna .

Mörz, T., Kreiter, S., Schmidt, M. , Fekete, N., Kutterolf, S. , Brückmann, W. and Suess, E. (2005) Systematische Änderungen im Schlammdiapirismus entlang des mittelamerikanischen Kontinentalrandes. [Talk] In: SONNE Statusseminar. , 09.- 11.03, Rostock-Warnemünde, Germany .

Wallmann, K. , Schacht, U., Mörz, T., Schmidt, M. , Suess, E. and Brückmann, W. (2005) Geochemische Variation und Herkunft von Fluiden in Schlammdiapiren und Schlammvulkanen vor Costa Rica. [Talk] In: SONNE Statusseminar 2005. , 09.- 11.03.2005, Rostock-Warnemünde .

Schacht, U., Kutterolf, S. , Schmidt, M. and Wallmann, K. (2003) Diagenesis of volcanic ashes in the central america subduction zone - an experimental and field study approach. [Talk] In: EGS-AGU-EUG Joint Assembly 2003. , 06.-11.04.2003, Nice, France .

Schacht, U., Kutterolf, S. , Schmidt, M. and Wallmann, K. (2003) Alteration of Tephra in the central America subduction zone - Comparrison of experimental and field study data. [Talk] In: IUGG. , 09.-13.07.2003, Sapporo, Japan .

Schacht, U., Kutterolf, S. , Schmidt, M. , Wallmann, K. and Hensen, C. (2003) Solution and dissolution of major and trace elements in tephras from the Central American Subduction Zone. [Talk] In: Joint Meeting and interdisciplinary perspective organized by the Deutsche Mineralogische Gesellschaft, the Geologische Vereinigung and the Deutsche Geophysikalische Gesellschaft. , 22.- 25.09.2003, Bochum, Germany .

Schmidt, M. , Mörz, T., Mau, S., Grevemeyer, I. , Wallmann, K. , Sahling, H. and Brückmann, W. (2003) Shallow surface methane hydrate associated with mud diapir Mound 11 in the Costa Rica fore arc zone ". [Talk] In: EGS-AGU-EUG Joint Assembly. , 06.- 11.04.2003, Nice, France .

Wallmann, K. , Mau, S., Schacht, U., Deyhle, A., Schmidt, M. , Garbe-Schönberg, C. D. and Suess, E. (2003) Fluid flow in sediments along the Costa Rican continental margin - quantification and origin of fluids. [Talk] In: EGS-AGU-EUG Joint Assembly. , 06.- 11.04.2003, Nice, France .

Faghih, Z. , Haroon, A. , Jegen, M. , Berndt, C. , Weymer, B. A. , Reeck, K., Müller, T. and Schmidt, M. (2022) Characterizing Offshore Freshened Groundwater in a Carbonate Shelf Using Integrated Geophysical and Geochemical Analysis: A Case Study from the Maltese Islands.. [Poster] In: 25. EM Induction Workshop. , 11.-17.09.2022, Cesme, Turkey .

Böttner, C. , Callow, B. J., Schramm, B., Gross, F., Geersen, J. , Schmidt, M. , Vasilev , A., Petsinski, P. and Berndt, C. (2021) Focused methane migration formed pipe structures in permeable sandstones: Insights from UAV-based digital outcrop analysis in Varna, Bulgaria. [Poster] In: 81. Jahrestagung der Deutschen Geophysikalischen Gesellschaft (DGG). , 01.03.-05.03.2021, Kiel (online) .

Böttner, C. , Haeckel, M. , Schmidt, M. , Berndt, C. , Vielstädte, L. and Karstens, J. (2019) Greenhouse gas emissions from marine decommissioned hydrocarbon wells: leakage detection, monitoring and mitigation strategies. [Poster] In: AGU Fall Meeting 2019. , 09.-13.12.2019, San Francisco, USA .

Gros, J. , Schmidt, M. , Dale, A. W. , Linke, P. , Vielstädte, L., Bigalke, N., Haeckel, M. , Wallmann, K. and Sommer, S. (2019) Simulating Panarea’s offshore multiple CO2 seeps as a natural proxy for potential leakage from sub-seabed CO2 storage. [Poster] In: STEMM-CCS 3. Annual Meeting. , 27.2.-1.3.2019, Amsterdam, Netherlands .

Schmidt, C. , Hensen, C. , Wallmann, K. , Liebetrau, V., Tatzel, M., Schurr, S. L., Kutterolf, S. , Haffert, L., Hübscher, C., Lebas, E. , Heuser, A. , Schmidt, M. , Struss, H., Vogl, H. and Hansteen, T. H. (2019) Caminite: An underestimated metastable Mg reservoir in hydrothermal recharge zones?. [Poster] In: AGU Fall Meeting 2019. , 09.-13.12.2019, San Francisco, USA .

Jurikova, H., Liebetrau, V., Gutjahr, M. , Rollion-Bard, C., Hu, M. Y., Krause, S., Henkel, D., Hiebenthal, C. , Schmidt, M. , Laudien, J. and Eisenhauer, A. (2018) Geochemical and physiological responses of brachiopods to ocean acidification – new insights from boron isotopes. [Poster] In: 8. International Brachiopod Congress 2018. , 11.-14.09.2018, Milano, Italy .

Jurikova, H., Liebetrau, V., Gutjahr, M. , Rollion-Bard, C., Hu, M. Y., Henkel, D., Hiebenthal, C. , Krause, S., Schmidt, M. , Laudien, J. and Eisenhauer, A. (2018) Incorporation of boron isotopes into brachiopod shell calcite: implications for paleo-pH reconstructions. [Poster] In: EGU General Assembly 2018. , 08.-13.04.2018, Vienna, Austria .

Brückmann, W., Leibold, P., Schmidt, M. , Al Balushi, H. and Al Abri, O. (2017) Using an autonomous Wave Glider to detect seawater anomalies related to submarine groundwater discharge - engineering challenge. [Poster] In: AGU Fall Meeting 2017. , 11.12 - 15.12.2017, New Orleans, USA .

Al Balushi, H., Müller, T., Friesen, J., Leibold, P., Schmidt, M. and Brückmann, W. (2016) Submarine Groundwater Discharge: Combining offshore autonomous monitoring with onshore groundwater modeling and monitoring in the Salalah coastal plain, Oman. [Poster] In: Conference ECSA 56 - Coastal systems in transition, from a ‚natural‘ to an ‚anthropogenically-modified‘ state. , 04.-07.09.2016, Bremen, Germany .

Richner, D., Niemann, H., Steinle, L., Schneider von Deimling, J., Urban, P., Hoffmann, J., Schmidt, M. , Treude, T. and Lehmann, M. (2016) Short-term variations of methane concentrations and methanotrophic activity in a coastal inlet (Eckernförde Bay, Germany). [Poster] In: EGU General Assembly 2016. , 17.-22.04.2016, Vienna, Austria .

Berndt, C. , Hensen, C. , Mortera-Gutierrez, C. A., Sarkar, S. , Geilert, S. , Schmidt, M. , Liebetrau, V., Kipfer, R., Scholz, F., Doll, M., Muff, S., Karstens, J. , Böttner, C. , Chi, W. C., Moser, M., Behrendt, R., Fiskal, A., Evans, T., Planke, S., Lizzarralde, D. and Lever, M. A. (2015) Hydrothermal Activity in the Northern Guaymas Basin. [Poster] In: AGU Fall Meeting 2015. , 14.-18.12.2015, San Francisco, USA .

Fietzek, P., Schmidt, M. , Linke, P. and Frank, C. (2015) Laser-based Underwater Sensor for the Measurement of Methane Partial Pressure. [Poster] In: Marine Applications and Perspectives of Cavity Enhanced Optical Detection Schemes. , 20.-21.04.2015, Kiel, Germany .

Schneider von Deimling, J., Leifer, I., Schmidt, M. , Rehder, G. and Linke, P. (2014) The North Sea Blowout: New seepage processes discovered at a mega methane seepage site. [Poster] In: EGU General Assembly 2014. , 27.04.-02.05.2014, Vienna, Austria .

Schneider von Deimling, J., Leifer, I., Schmidt, M. , Rehder, G. and Linke, P. (2014) The North Sea Blowout: A gas bubble megaplume with spiral vortex motion and why it might, or might not, contribute much to the atmospheric methane. [Poster] In: EGU General Assembly 2014. , 27.04.-02.05.2014, Vienna, Austria .

Nuzzo, M., Hensen, C. , Schmidt, M. , Scholz, F. , Terrinha, P. and Pinheiro, L. M. (2013) Multiple Sources of Hydrocarbon Gases in Mud Volcanoes of the Gulf of Cadiz (SW Iberian Margin) – Insights from a Large Organic Geochemistry Data Set. [Poster] In: AAPG European Regional Conference. , 8.-10.04.2013, Barcelona, Spain .

Nuzzo, M., Hensen, C. , Schmidt, M. , Scholz, F. , Terrinha, P. and Pinheiro, L. M. (2013) Multiple sources of hydrocarbon gases in mud volcanoes of the Gulf of Cadiz (SW Iberian Margin) – insights from a large organic geochemistry data set. [Poster] In: AAPG Annual Convention & Exhibition 2013. , 19.-22.05.2013, Pittsburgh, USA .

Steinle, L., Wilfert, P., Schmidt, M. , Bryant, L. D., Haeckel, M. , Lehmann, M. F., Linke, P. , Sommer, S., Treude, T. and Niemann, H. (2013) News from the "blowout", a man-made methane pockmark in the North Sea: chemosynthetic communities and microbial methane oxidation. [Poster] In: EGU General Assembly 2013. , 07.-12.04.2013, Vienna, Austria .

Bilsley, N. A., Fietzek, P., Ghamraoui, O., Mäck, A., Flury, S., Al-Farawati, R., McGinnis, D. and Schmidt, M. (2011) Temporal and Spatial Variability of Methane in a Freshwater Outflow to the Baltic Sea. [Poster] In: AGU Fall Meeting 2011. , 05.-09.12.2011, San Francisco, USA .

Reitz, A., Pape, T., Schmidt, M. , Haeckel, M. , Berner, U., Scholz, F., Liebetrau, V., Aloisi, G., Weise, S. and Wallmann, K. (2010) Geochemical investigation of cold seeps fluids offshore Georgia, eastern Black Sea. [Poster] In: 10th International Conference on Gas in Marine Sediments (GIMS10). , 06.-12.09.2010, Listvyanka, Russia .

Kutterolf, S. , Schacht, U., Freundt, A. , Wehrmann, H., Mörz, T. and Schmidt, M. (2005) Vulkanische Aschen im Pazifischen Ozean vor Nicaragua und Costa Rica – Ergebnisse der Sonne Ausfahrt SO173/3. [Poster] In: SONNE Statusseminar 2005. , 09.- 11.03.2005, Rostock-Warnemünde .

Fischer, M., Botz, R., Schmidt, M. , Rockenbauch, K. and Littke, R. (2004) Authigene Mineralisationen im Staßfurt-Karbonat (Ca2) Informationen über CO2-Quellen im Reservoirgestein der CO2-Provinz, Niedersächsisches Becken. [Poster] In: Sediment 2004, 2. SEPMCES Meeting. , 31.05.-06.06.2004, Aachen, Germany .

Kutterolf, S. , Schacht, U., Freundt, A. , Wehrmann, H., Mörz, T., Schmidt, M. and Schmincke, H. U. (2004) Marine Tephras offshore Nicaragua and Costa Rica – Determination of sedimentation rates, eruption volumes, marine stratigraphy. [Poster] In: IAVCEI General Assembly 2004. , 14.-20.11.2004, Pucon, Chile .

Klein, G., Mathys, M., Thießen, O., Schmidt, M. , Theilen, F. and Bohlen, T. (2003) Shear wave velocity depth profiles from dispersive waves recorded in the Natural Laboratory (NATLAB) in the Arkona Basin, Baltic Sea.. [Poster] In: EGS-AGU-EUG Joint Assembly 2003. , 06.-11.04.2003, Nice, France .

Thießen, O., Mathys, M., Qian, Y., Klein, G., Schmidt, M. and Theilen, F. (2003) Geochemical and geophysical properties of gas-rich sediment in the Arkona Basin (Baltic Sea). [Poster] In: EGS-AGU-EUG Joint Assembly 2003. , 06.-11.04.2003, Nice, France .

Fischer, M., Botz, R., Schmidt, M. , Rockenbauch, K. and Littke, R. (2002) Authigenic carbonates and CO2 sources in reservoir rocks of the CO2 province in the Lower Saxony Basin.. [Poster] In: Rundgespräch “Dynamik sedimentärer Systeme unter wechselnden Spannungsregimen am Beispiel des zentraleuropäischen Beckensystems“. , 28-29.11.2002, Schloss Eringerfeld, Geseke, Germany .

Theilen, F., Klein, G., Thießen, O., Schmidt, M. and Bohlen, T. (2002) NATLAB: Seismic Parameters and Physical Properties of Marine Sediments. [Poster] In: Statusseminar "Gashydrate im Geosystem". , 06.05.-07.05.2002., Kiel, Germany .

Botz, R., Wehner, H., Schmitt, M., Worthington, T., Schmidt, M. and Stoffers, P. (2001) Thermogenic hydrocarbons from the offshore Calypso hydrothermal field, Bay of Plenty, New Zealand. [Poster] In: EUG 11. , 08.-12.04.2001, Strasburg, France .

Schmidt, M. , Botz, R., Winn, K., Stoffers, P., Thiessen, O. and Herzig, P. (2001) Seeping hydrocarbons and related carbonate mineralisations in sediments south of Lihir Island (New Ireland fore arc basin, Papua New Guinea). [Poster] In: EUG 11. , 08.-12.04.2001, Strasbourg, France .

Schmidt, M. , Botz, R., Faber, E., Herzig, P. and Stoffers, P. (2000) Spurengascharakteristiken in tektonisch aktiven Gebieten - Stabile Isotopen-Untersuchungen an Kohlenwasserstoffen.. [Poster] In: DeRidge 2000. , 05.07.-07.07.2000, Bremen, Germany .

Jung, C., Bohrmann, G., Botz, R., Kuhn, G. and Schmidt, M. (1999) Außergewöhnlich junge Porcellanitgenese im antarktischen Opalgürtel, ODP Leg 177, Site 1094. [Poster] In: Kolloquium des DFG-Schwerpunktprogramms „Ocean Drilling Program/ Deep Sea Drilling Project“. , 03.03.-05.03.1999, Bremerhaven, Germany .

Riedel, C., Theilen, F., Broser, A., Petersen, T. and Schmidt, M. (1999) Constraining Seismic Data by Geological Boundary Conditions in a Submarine Hydrothermal Environment. [Poster] In: AGU Fall Meeting 1999. , 13.-17.12.1999, San Francisco, California, USA .

Schmidt, M. , Faber, E., Botz, R., Poggenburg, J., Schmitt, M., Stoffers, P. and Moammar, M. (1999) Hydrocarbon gases in brine-filled Red Sea deeps. [Poster] In: Statusseminar Meeresforschung mit FS Sonne 1999. , 10.-12.03.1999, Freiberg, Germany .

Schmidt, M. , Faber, E., Botz, R., Poggenburg, J., Schmitt, M., Stoffers, P. and Mommar, M. (1999) Hydrocarbon gases in brine-filled Red Sea deeps. [Poster] In: 2. Symposium on Red Sea Marine Environment. , 08.-10.11.1999, Jeddah, Saudi Arabia .

Schmidt, M. , Stoffers, P., Herzig, P. and Botz, R. (1999) Authigenic carbonates and methane anomalies in the New-Ireland fore arc region - south Lihir Island. [Poster] In: Statusseminar Meeresforschung mit FS Sonne 1999. , 10.-12.03.1999, Freiberg, Germany .

Schmidt, M. , Botz, R., Winkler, B. and Bohrmann, G. (1998) Structure-related oxygen isotopes in diatom frustules (Opal-A). [Poster] In: Goldschmidt Conference 1998. , 30.08.-03.09.1998, Toulouse, France .

Schmidt, M. , Faber, E., Botz, R., Poggenburg, J., Schmitt, M. and Stoffers, P. (1998) Origin of hydrocarbon trace gases in brine-filled Red Sea deeps. [Poster] In: Goldschmidt Conference 1998. , 30.08.-03.09.1998, Toulouse, France .

Schmidt, M. , Botz, R., Bohrmann, G., Anders, T., Baumann, M. and Stoffers, P. (1996) Oxygen Isotopes in Marine Diatoms (Opal-A). [Poster] In: Goldschmidt Conference 1996. , 31.03.-04.04.1996, Heidelberg, Germany .

Benter, T., Feldmann, C., Kirchner, U., Schmidt, M. , Schmidt, S. and Schindler, R. N. (1995) UV/VIS-absorption Spectra of HOBr and CH3OBr; Br(2P3/2) Atom Yields in the Photolysis of HOBr. [Poster] In: 5. Statusseminar des Ozonforschungsprogramms. , 22.06.-23.06.1995, Bonn, Germany .

Benter, T., Kirchner, U., Jungkamp, T. P. W., Liesner, M., Schmidt, M. , Feldmann, C. and Schindler, R. N. (1994) Laboruntersuchungen an Halogenoxiden. [Poster] In: 4. Statusseminar des Ozonforschungsprogramms. , 14.07.-15.07.1994, Bonn, Germany ; pp. 40-49 .

Schmidt, M. (2005) Stable oxygen, hydrogen, and carbon isotope fractionation of gases and minerals in geology. (Professorial dissertation), Christian-Albrechts-Universität, Kiel, 241 pp.

Jegen, M. , Haroon, A. , Schwalenberg, K., Müller, T. H., Schmidt, M. , Pandolpho, B., Bucci, M., Horozal, S. and Sakkelariou, D. (2024) Gulf of Corinth Groundwater - Is the deep offshore freshened, groundwater body within the Gulf of Corinth actively recharging? Cruise No. M196, 5.12.2023 - 27.12.2023, Piraeus (Greece) - Limassol (Cyprus). GoCW. . METEOR-Berichte, M196 . Begutachterpanel Forschungsschiffe, Bonn, 92 pp. DOI 10.48433/cr_m196.

Kalapurakkal, H. T., Friedrich, J. and Schmidt, M. (2023) RV LITTORINA Cruise Report L08-22 [L22-08], 07 – 09 June 2022 (Kiel - Heiligenhafen). . GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, 22 pp.

Berndt, C. , Urlaub, M. , Jegen, M. , Faghih, Z., Reeck, K., Franz, G., Barnscheidt, K. C., Wollatz-Vogt, M., Liebsch, J., Schramm, B., Elger, J. , Kühn, M., Müller, T. , Schmidt, M. , Spiegel, T., Timm, H., Hinz, A. K., Sager, T., Hilbert, H. S., Rohde, L., Korbjuhn, T., Reissmann, S. and Diller, N. (2021) RV SONNE Fahrtbericht / Cruise Report SO277 OMAX: Offshore Malta Aquifer Exploration, Emden (Germany) – Emden (Germany), 14.08. – 03.10.2020. . GEOMAR Report, N. Ser. 057 . GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, Kiel, Germany, 139 pp. DOI 10.3289/GEOMAR_REP_NS_57_20.

Schmidt, C. , Böttner, C. , Schmidt, M. , Müller, T. H. , Wünsche, A., Willems, T., Lindner, M., Müller, F., Hunkemöller, A. and Spiegel, T. (2021) Wave induced pockmark formation in the North Sea, Cruise No. MSM 99/2 (GPF 21-1_013), 26.03.2021 - 05.04.2021, Emden (Germany) - Emden (Germany). HELGOLAND POCKMARKS. . Maria S. Merian Berichte, MSM99/2 . Gutachterpanel Forschungsschiffe, Bonn, 49 pp. DOI 10.48433/cr_msm99_2.

Schmidt, M. , Sommer, S., Böttner, C. , Dale, A. W. , Lenz, N. and Spiegel, T. (2021) Dynamics and variability of POC burial in depocenters of the North Sea (Skagerrak), Cruise No. AL561, 2.08.2021 – 13.08.2021, Kiel – Kiel, APOC . . Alkor-Berichte, AL561 . GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, 34 pp. DOI 10.3289/CR_AL561.

Hensen, C. , Adao, H., Arn, S., Batista, L., Belosa, L., Bodenbinder, A., Cherednichenko, S., Domeyer, B., Duarte, J., Glombitza, C., Kaul, N., Koppe, M., Li, J., Liebetrau, V., Müller, T. , Nogueira, P., Nuzzo, M., Petersen, A., Schmidt, M. , Schmidt, J. N., Schmidt, T., Sroczynska, K., Stelzner, M., Terrinha, P., Warnken, N. and Weber, U. W. (2020) Exploring subsurface fluid flow and active dewatering along the oceanic plate boundary between Africa and Eurasia (Gloria Fault), Cruise No. M162, 06.03.2020 – 11.04.2020, Ponta Delgada (Portugal) – Emden (Germany) GLORIA-FLOW. . METEOR-Berichte, M162 . Gutachterpanel Forschungsschiffe, Bonn, 189 pp. DOI 10.48433/cr_m162.