Items where Author is "Ehlert, Claudia"

Up a level
Export as [feed] RSS [feed] RSS 3.0
Group by: Document type | Year of publication | No Grouping
Number of items: 37.

Articles in a Scientific Journal - peer-reviewed

[img] [img]

Sutton, J. N., André, L., Cardinal, D., Conley, D. J., de Souza, G. F., Dean, J., Dodd, J., Ehlert, C., Ellwood, M. J., Frings, P. J., Grasse, P. , Hendry, K., Leng, M. J., Michalopoulos, P., Panizzo, V. N. and Swann, G. E. A. (2018) A Review of the Stable Isotope Bio-geochemistry of the Global Silicon Cycle and Its Associated Trace Elements. Open Access Frontiers in Earth Science, 5 (Article number 112). DOI 10.3389/feart.2017.00112.

[img]

Grasse, P. , Brzezinski, M., Cardinal, D., de Souza, G. F., Andersson, P., Closset, I., Cao, Z., Dai, M., Ehlert, C., Estrade, N., Francois, R., Frank, M., Jiang, G., Jones, J. L., Kooijman, E., Liu, Q., Lu, D., Pahnke, K., Ponzevera, E., Schmitt, M., Sun, X., Sutton, J., Thil, F., Weis, D., Wetzel, F., Zhang, A., Zhang, J. and Zhang, Z. (2017) GEOTRACES Intercalibration of the Stable Silicon Isotope Composition of Dissolved Silicic Acid in Seawater. Journal of Analytical Atomic Spectrometry, 32 (3). pp. 562-578. DOI 10.1039/C6JA00302H.

[img]

Doering, K., Erdem, Z., Ehlert, C., Fleury, S., Frank, M. and Schneider, R. (2016) Changes in diatom productivity and upwelling intensity off Peru since the Last Glacial Maximum: Response to basin-scale atmospheric and oceanic forcing. Open Access Paleoceanography, 31 (10). 1453-1473 . DOI 10.1002/2016PA002936.

[img] [img]

Ehlert, C., Doering, K., Wallmann, K. , Scholz, F., Sommer, S., Grasse, P. , Geilert, S. and Frank, M. (2016) Stable silicon isotope signatures of marine pore waters – Biogenic opal dissolution versus authigenic clay mineral formation. Geochimica et Cosmochimica Acta, 191 . pp. 102-117. DOI 10.1016/j.gca.2016.07.022.

[img]

Grasse, P. , Ryabenko, E., Ehlert, C., Altabet, M. A. and Frank, M. (2016) Silicon and nitrogen cycling in the upwelling area off Peru: A dual isotope approach. Limnology and Oceanography, 61 (5). pp. 1661-1676. DOI 10.1002/lno.10324.

[img]

Doering, K., Ehlert, C., Grasse, P. , Crosta, X., Fleury, S., Frank, M. and Schneider, R. (2016) Differences between mono-generic and mixed diatom silicon isotope compositions trace present and past nutrient utilisation off Peru. Geochimica et Cosmochimica Acta, 177 . pp. 30-47. DOI 10.1016/j.gca.2015.12.029.

[img] [img]

Ehlert, C., Grasse, P. , Gutiérrez, D., Salvatteci, R. and Frank, M. (2015) Nutrient utilisation and weathering inputs in the Peruvian upwelling region since the Little Ice Age. Open Access Climate of the Past, 11 . pp. 187-202. DOI 10.5194/cp-11-187-2015.

[img]

Grasse, P. , Ehlert, C. and Frank, M. (2013) The influence of water mass mixing on the dissolved Si isotope composition in the Eastern Equatorial Pacific. Earth and Planetary Science Letters, 380 . pp. 60-71. DOI 10.1016/j.epsl.2013.07.033.

[img]

Cao, Z., Frank, M., Dai, M., Grasse, P. and Ehlert, C. (2012) Silicon isotope constraints on sources and utilization of silicic acid in the northern South China Sea. Geochimica et Cosmochimica Acta, 97 . pp. 88-104. DOI 10.1016/j.gca.2012.08.039.

[img]

Ehlert, C., Grasse, P. , Mollier-Vogel, E., Böschen, T., Franz, J., de Souza, G. F., Reynolds, B. C., Stramma, L. and Frank, M. (2012) Factors controlling the silicon isotope distribution in waters and surface sediments of the Peruvian coastal upwelling. Geochimica et Cosmochimica Acta, 99 . pp. 128-145. DOI 10.1016/j.gca.2012.09.038.

[img]

Etourneau, J., Ehlert, C., Frank, M., Martinez, P. and Schneider, R. (2012) Contribution of changes in opal productivity and nutrient distribution in the coastal upwelling systems to Late Pliocene/Early Pleistocene climate cooling. Open Access Climate of the Past, 8 (5). pp. 1435-1445. DOI 10.5194/cp-8-1435-2012.

[img]

Ehlert, C., Frank, M., Haley, B. A., Böniger, U., De Deckker, P. and Gingele, F. X. (2011) Current transport versus continental inputs in the eastern Indian Ocean: Radiogenic isotope signatures of clay size sediments. Open Access Geochemistry, Geophysics, Geosystems, 12 (6). Q06017. DOI 10.1029/2011GC003544.

[img]

Kindler, P., Godefroid, F., Chiaradia, M., Ehlert, C., Eisenhauer, A. , Frank, M., Hasler, C. A. and Samankassou, E. (2011) Discovery of Miocene to early Pleistocene deposits on Mayaguana, Bahamas: Evidence for recent active tectonism on the North American margin. Geology, 39 (6). pp. 523-526. DOI 10.1130/G32011.1.

Presentations

[img]

Geilert, S. , Hensen, C., Liebetrau, V., Scholz, F., Frank, M. and Ehlert, C. (2017) Si isotopes in sedimentary pore fluids trace early diagenetic reactions in the Guaymas Basin , Gulf of California. Open Access [Talk] In: Goldschmidt Conference 2017. , 13.-18.08.2017, Paris, France .


Grasse, P. , Ehlert, C. and Frank, M. (2014) Silicon isotopes in the Eastern Tropical Pacific. [Invited talk] In: AGU Fall Meeting 2014. , 15.-19.12.2014, San Francisco, USA .


Ehlert, C., Grasse, P. and Frank, M. (2012) Changes in silicate utilisation and upwelling intensity off Peru - insights from silicon and neodynium isotopes. [Talk] In: GV & Sediment Meeting 2012, Of Land and Sea: Processes and Products. , 26.09.2012, Hamburg .


Grasse, P. , Ehlert, C., Franz, J., Böschen, T., Mollier-Vogel, E., Stramma, L. and Frank, M. (2012) Silicon isotope distribution in waters and surface sediments of the Peruvian coastal upwelling. [Talk] In: IBIS Hamburg 2012, Isotopes in Biogenic Silica (IBiS) 2012 Meeting. , 28.05.-30.05.2012, Hamburg ; ID 10946 .


Ehlert, C., Grasse, P. and Frank, M. (2011) Changes in silicate utilization and upwelling intensity off Peru since the LGM - insights from silicon isotopes. [Talk] In: EGU General Assembly 2011. , 03.-08.04.2011, Vienna, Austria .


Ehlert, C., Grasse, P. and Frank, M. (2011) Changes in silicate utilization and upwelling intensity off Peru since the LGM - insights from silicon and neodymium isotopes. [Talk] In: Goldschmidt Conference 2011. , 14.-19.08.2011, Prague, Czech Republic .

[img]

Grasse, P. , Ehlert, C., Ryabenko, E. and Frank, M. (2011) Silicon isotopes as a tracer for silicate utilization in the Peruvian upwelling. [Talk] In: EGU General Assembly 2011. , 03.04.-08.04.2011, Vienna, Austria ; p. 6081 . Geophysical Research Abstracts, 13 .


Grasse, P. , Ehlert, C., Stramma, L. , Ryabenko, E., Franz, J. and Frank, M. (2011) Silicon isotopes as a tracer for silicate utilization in the Peruvian upwelling. [Talk] In: Goldschmidt Conference 2011. , 14.-19.08.2011, Prague, Czech Republic .

Conference posters

[img] [img]

Doering, K., Ehlert, C., Crosta, X., Frank, M. and Schneider, R. (2014) Comparison of stable silicon isotope compositions of biogenic opal and diatom assemblages: A deglacial to Holocene record of the Peruvian upwelling. [Poster] In: Ocean Sciences Meeting 2014. , 23.-28.02.2014, Honululu, Hawaii, USA .

[img]

Doering, K., Ehlert, C., Mollier-Vogel, E., Crosta, X., Robinson, R. S., Frank, M. and Schneider, R. (2013) Stable silicon and nitrogen isotope compositions - Deglacial to Holocene changes of the nutrient cycling off Peru. [Poster] In: 11. International Conference on Paleoceanography (ICP11) 2013. , 01.-06.09.2013, Sitges - Barcelona, Spain .

[img]

Doering, K., Ehlert, C., Mollier-Vogel, E., Frank, M. and Schneider, R. (2013) Combined stable silicon and nitrogen isotope compositions as tracers of nutrient cycling off Peru during the past 20,000 years . [Poster] In: IBiS Helsinki 2013. , 03.-05.06.2013, Helsinki, Finland .


Grasse, P. , Ehlert, C. and Frank, M. (2013) Influences on silicon isotope signatures in the Eastern Equatorial Pacific: Water mass mixing vs. dissolution processes. [Poster] In: IBIS Meeting. , 03.06.-06.06.2013, Helsinki, Finland .


Cao, Z., Frank, M., Dai, M., Grasse, P. and Ehlert, C. (2012) Silicon isotope constraints on sources and utilization of silicate in the northern South China Sea. [Poster] In: 2012 Ocean Sciences Meeting, OSM. , 20.02.-24.02.2012, Salt Lake City, Utah, USA . 2012 Ocean Sciences Meeting : abstract book ; February 20-24. 2012 ; Salt Palace Convention Center, Salt Lake City, Utah, USA. ; ID 10110 .


Grasse, P. , Ryabenko, E., Ehlert, C. and Frank, M. (2012) Comparison between silicon and nitrogen isotopes in the upwelling area off Peru. [Poster] In: 2012 Ocean Sciences Meeting, OSM. , 20.02.-24.02.2012, Salt Lake City, Utah, USA . 2012 Ocean Sciences Meeting : abstract book ; February 20-24. 2012 ; Salt Palace Convention Center, Salt Lake City, Utah, USA. ; ID 10946 .


Frank, M., Grasse, P. , Ehlert, C., Stichel, T. and Stramma, L. (2011) Distribution of neodymium and silicon isotopes in Eastern Equatorial Pacific seawater. [Poster] In: 3rd GEOTRACES Date Model Synergy Workshop. , 14.-17.11.2011, Barcelona, Spain .


Ehlert, C., Grasse, P. , Frank, M. and Stramma, L. (2010) Silicon isotope distribution in the Peruvian upwelling area. [Poster] In: 10th International Conference on Paleoceanography (ICP). , 29.08.-03.09.2010, San Diego, CA, USA .


Grasse, P. , Ehlert, C., Frank, M., Stichel, T. and Stramma, L. (2010) Tracing water masses in the eastern equatorial Pacific with Nd isotopes: Evidence for strong inputs from the Peruvian coast . [Poster] In: 10th International Conference on Paleoceanography. , 29.08.-03.09.2010, San Diego, CA, USA .


Ehlert, C., Frank, M., Eisenhauer, A. and Schönfeld, J. (2009) Biogeochemical reconstruction of past oxygenation conditions in the Peruvian coastal upwelling system. [Poster] In: Cioppino-Workshop "Transient Changes in Past Warm Climates". , 01.08, Urbino, Italy .


Ehlert, C., Frank, M., Haley, B., Gingele, F. and DeDeckker, P. (2009) Radiogenic isotope signatures of clay-size sediments in the Eastern Indian Ocean: Weathering inputs and current regimes during the latest Quaternary. [Poster] In: Goldschmidt Conference. , 23.06, Davos, Switzerland .

Theses - not published by a publisher

[img]

Ehlert, C. (2012) Late Quaternary Changes in Silicate Utilisation and Upwelling Intensity off Peru – Insights from Silicon and Neodymium Isotopes. (PhD/ Doctoral thesis), Christian-Albrechts-Universität, Kiel, XVIII, 140 S. pp.

Reports - Cruise Reports

[img]

Frank, M., Abouchami, W., Alexander, B., Balzer, W., Barnes, C., Camara-Mor, P., Ehlert, C., Fichtner, V., Fischer, M., Galer, S., Goldstein, F., Hagenow, A., Haynert, K., Heinze, J., Masque, P., Merschel, G., Koschinsky, A., Kraft, S., Kretschmer, K., Kretschmer, S., Lorenzen, J., Ostendorf, M., Poehle, S., Roth, C., Staubwasser, M., Stumpf, R., Tang, X., Teschner, C., Truscheit, T., Vogt, M. and Zieringer, M. (2013) Trace Metals and Their Isotopes in the Tropical Atlantic Ocean - Cruise No. M81/1, February 04 – March 08, 2010, Las Palmas (Canary Islands, Spain) – Port of Spain (Trinidad & Tobago). Open Access . METEOR-Berichte, M81/1 . DFG-Senatskommission für Ozeanographie, Bremen, 36 pp. DOI 10.2312/cr_m81_1.

This list was generated on Tue Jun 18 22:16:47 2019 CEST.