Items where Author is "Wehrmann, Heidi"

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Article in a Scientific Journal - peer-reviewed

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Jacques, G., Hoernle, K., Gill, J., Wehrmann, H., Bindeman, I. and Lara, L. E. (2014) Geochemical variations in the Central Southern Volcanic Zone, Chile (38-43°S): The role of fluids in generating arc magmas Chemical Geology, 371 . pp. 27-45. DOI 10.1016/j.chemgeo.2014.01.015.

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Freundt, A., Grevemeyer, I., Rabbel, W., Hansteen, T. H., Hensen, C., Wehrmann, H., Kutterolf, S., Halama, R. and Frische, M. (In Press / Accepted) Volatile (H2O, CO2, Cl, S) budget of the Central American subduction zone International Journal of Earth Sciences . DOI 10.1007/s00531-014-1001-1.


Völker, D., Wehrmann, H., Kutterolf, S., Iyer, K., Rabbel, W., Geersen, J. and Hoernle, K. (In Press / Accepted) Constraining input and output fluxes of the southern Central Chile Subduction Zone: water, chlorine, sulfur International Journal of Earth Sciences .


Wehrmann, H., Hoernle, K., Jacques, G., Garbe-Schönberg, D., Schumann, K., Mahlke, J. and Lara, L. E. (In Press / Accepted) Sulphur and chlorine geochemistry of mafic to intermediate tephras from the Chilean Southern Volcanic Zone (33-43°S) compared with those from the Central American Volcanic Arc International Journal of Earth Sciences .

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Jacques, G., Hoernle, K. A., Gill, J., Hauff, F., Wehrmann, H., Garbe-Schönberg, D., van den Bogaard, P., Bindeman, I. and Lara, L. E. (2013) Across-arc geochemical variations in the Southern Volcanic Zone, Chile (34.5- 38.0°S): Constraints on Mantle Wedge and Slab Input Compositions Geochimica et Cosmochimica Acta, 123 . pp. 218-243. DOI 10.1016/j.gca.2013.05.016.


Kutterolf, S., Hansteen, T. H., Appel, K., Freundt, A., Krüger, K., Perez, W. and Wehrmann, H. (2013) Combined bromine and chlorine release from large explosive volcanic eruptions: A threat to stratospheric ozone? Geology, 41 (6). pp. 707-710. DOI 10.1130/G34044.1.


Wehrmann, H., Hoernle, K., Garbe-Schönberg, D., Jacques, G., Mahlke, J. and Schumann, K. (In Press / Accepted) Insights from trace element geochemistry as to the roles of subduction zone geometry and subduction input on the chemistry of arc magmas International Journal of Earth Sciences . DOI 10.1007/s00531-013-0917-1.

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Dzierma, Y., Rabbel, W., Thorwart, M., Koulakov, I., Wehrmann, H., Hoernle, K. and Comte, D. (2012) Seismic velocity structure of the slab and continental plate in the region of the 1960 Valdivia (Chile) slip maximum - insights into fluid release and plate coupling Earth and Planetary Science Letters, 331-332 . pp. 164-176. DOI 10.1016/j.epsl.2012.02.006.

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Völker, D., Kutterolf, S. and Wehrmann, H. (2011) Comparative mass balance of volcanic edifices at the Southern Volcanic Zone of the Andes between 33°S and 46°S Journal of Volcanology and Geothermal Research, 205 . pp. 114-129. DOI 10.1016/j.jvolgeores.2011.03.011.

Wehrmann, H., Hoernle, K., Portnyagin, M., Wiedenbeck, M. and Heydolph, K. (2011) Volcanic CO2 output at the Central American subduction zone inferred from melt inclusions in olivine crystals from mafic tephras Geochemistry, Geophysics, Geosystems, 12 . Q06003. DOI 10.1029/2010GC003412.

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Costantini, L., Bonadonna, C., Houghton, B. F. and Wehrmann, H. (2009) New physical characterization of the Fontana Lapilli basaltic Plinian eruption, Nicaragua Bulletin of Volcanology, 71 (3). pp. 337-355. DOI 10.1007/s00445-008-0227-9.


Kutterolf, S., Freundt, A., Perez, W., Mörz, T., Schacht, U., Wehrmann, H. and Schmincke, H. U. (2008) Pacific offshore record of plinian arc volcanism in Central America: 1. Along-arc correlations Geochemistry Geophysics Geosystems, 9 . DOI 10.1029/2007GC001631.


Kutterolf, S., Freundt, A., Perez, W., Wehrmann, H. and Schmincke, H. U. (2007) Late Pleistocene to Holocene temporal succession and magnitudes of highly-explosive volcanic eruptions in west-central Nicaragua Journal of Volcanology and Geothermal Research, 163 . pp. 55-82. DOI 10.1016/j.jvolgeores.2007.02.006.


Freundt, A., Kutterolf, S., Wehrmann, H., Schmincke, H. U. and Strauch, W. (2006) Eruption of the dacite to andesite zoned Mateare Tephra, and associated tsunamis in Lake Managua, Nicaragua Journal of Volcanology and Geothermal Research, 149 (1-2). pp. 103-123.

Book chapter


Kutterolf, S., Schacht, U., Wehrmann, H., Freundt, A. and Mörz, T. (2007) Onshore to offshore tephrostratigraphy and marine ash layer diagenesis in Central America In: Central America: geology, resources, hazards. , ed. by Bundschuh, J. and Alvarado Induni, G. E. Taylor & Francis, London, pp. 395-421. ISBN 978-0-415-41648-1


Wehrmann, H., Bonadonna, C., Freundt, A., Houghton, B. F. and Kutterolf, S. (2006) Fontana Tephra: A basaltic plinian eruption in Nicaragua In: Volcanic hazards in Central America. , ed. by Rose, W. I., Bluth, g., Carr, M. J., Ewert, J., Patino, L. and Vallance, J. Geological Society of America Special Paper, 412 . Geological Society of America, Boulder, Colorado, pp. 209-223.


Freundt, A., Kutterolf, S., Schmincke, H. U., Hansteen, T., Wehrmann, H., Perez, W., Strauch, W. and Navarro, M. (2006) Volcanic hazards in Nicaragua: Past, present, and future In: Volcanic hazards in Central America. , ed. by Rose, W. I., Bluth, G., Carr, M. J., Ewert, J., Patino, L. and Vallance, J. Geological Society of America Special Paper, 412 . Geological Society of America, Boulder, Colorado, pp. 141-165. DOI 10.1130/2006.2412(08).

Conference presentation

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Hoernle, K., Jacques, G., Gill, J., Wehrmann, H. and Lara, L. (2014) The Ins and Outs along 1100 km of the Southern Chilean Subduction Zone and Argentinian Backarc: From 6000 m below to 6000m above Sea Level [Talk] In: Geokolloquium Universität Erlangen-Nürnberg, 03.02.2014, Erlangen .


Hoernle, K., Jacques, G. and Wehrmann, H. (2013) Causes of along- an across-arc geochemical variations in the Southern Volcanic Zone [Talk] In: Universidad de Buenos Aires, November 2013, Buenos Aires, Argentina .


Kutterolf, S., Hansteen, T., Appel, K., Freundt, A., Krüger, K., Peréz Fern´andez, W. and Wehrmann, H. (2012) Bromine in Plininan eruptions: A paleo-ozone killer? [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 ; p. 16 .


Rabbel, W., Dzierma, Y., Thorwart, M., Wunderlich, T., Koulakov, I., Hoernle, K. and Wehrmann, H. (2012) From the Valdivia Fracture Zone to the Villarrica volcanic complex - seismic evidence of a link between subducted oceanic faults and volcanism [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 ; p. 25 .


Wehrmann, H., Dzierma, Y., Kutterolf, S. and Schaller, T. (2012) On the probability of future plinian eruptions at the Central American Volcanic Arc: a statistical time series analysis [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. 36-37 .


Rivera, R., Wehrmann, H. and Hoernle, K. (2012) Variations of S and Cl from melt inclusions of tephras across the Andean Arc, between 34°21’ and 37° 17’ S, Southern Volcanic Zone [Talk] In: 13. Congreso Geologico Chileno, 05.-09.08.2012, Antofagasta, Chile .


Krüger, K., Kutterolf, S., Hansteen, T., Appel, K., Freundt, A., Perez, W. and Wehrmann, H. (2012) The combined bromine and chlorine release from large explosive volcanic eruptions: a threat to stratospheric ozone [Talk] In: AGU Chapman Conference on Volcanism and the Atmosphere, 10.-15.06.2012, Selfoss, Iceland .


Wehrmann, H., Dzierma, Y., Kutterolf, S. and Schaller, T. (2012) The probability of future plinian eruptions at the Central American Volcanic Arc: a statistical time series analysis [Talk] In: 8. Alexander von Humboldt International Conference, Natural Disasters, Global Change, and the Preservation of World Heritage Sites, 12.-16.11.2012, Cusco, Peru .

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Jacques, G., Hoernle, K., Wehrmann, H., Garbe-Schönberg, D., van den Bogaard, P., Hauff, F. and Lara, L. (2011) Along-Arc geochemical variations in the Southern Volcanic Zone, Chile [Talk] In: Goldschmidt Conference 2011, 14.-19.08.2011, Prague, Czech Republic ; p. 1096 .

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Hoernle, K., Jacques, G., Wehrmann, H., Dzierma, Y., Garbe-Schönberg, D., van den Bogaard, P., Lara, L., Völker, D., Kutterolf, S. and Iyer, K. (2011) Geochemical, Geophysical and Morphological Results from the Chilean Southern Volcanic Zone: The Role of Fluids in Generating the Highest Magmatic Output [Talk] In: AGU Fall Meeting 2011, 05.-09.12.2011, San Francisco, USA .

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Jacques, G., Hoernle, K., Wehrmann, H., Garbe-Schönberg, C. D., van den Bogaard, P., Hauff, F. and Lara, L. (2010) Along- and Across-Arc Variations in the Southern Volcanic Zone, Chile [Talk] In: 88. Jahrestagung der Deutschen Mineralogischen Gesellschaft, DMG, From Dust to Dust, 19.09.-22.09.2010, Münster . From Dust to Dust : 88. Jahrestagung der Deutschen Mineralogischen Gesellschaft, DMG ; Abstracts ; 122, S09-T08 .


Jacques, G., Hoernle, K. A., Wehrmann, H., Garbe-Schönberg, D., van den Bogaard, P., Hauff, F. and Lara, L. (2010) Along- and Across-Arc Variations in the Southern Volcanic Zone, Chile [Talk] In: SFB 574 Subduction Workshop, 04.-07.11.2010, Pucon, Chile .


Kutterolf, S., Hansteen, T., Appel, K., Freundt, A., Perez, W. and Wehrmann, H. (2010) Bromine release during Plinian eruptions along the Central American Volcanic Arc [Talk] In: SFB 574 Subduction Workshop, 04.-07.11.2010, Pucon, Chile .


Hansteen, T., Kutterolf, S., Appel, K., Freundt, A., Perez, W. and Wehrmann, H. (2010) Bromine release during Plinian eruptions along the Central American Volcanic Arc [Talk] In: AGU Fall Meeting 2010, 13.-17.12.2010, San Francisco, USA .


Dzierma, Y. and Wehrmann, H. (2010) Eruption time series statistically examined: Probabilities of future eruptions in the Chilean Southern Volcanic Zone [Talk] In: SFB 574 Subduction Workshop, 04.-07.11.2010, Pucon, Chile .


Frische, M., Fietzke, J., Wehrmann, H., Hansteen, T. and Kutterolf, S. (2010) High-precision determination of stable chlorine isotopes: Insights into recycling processes beneath volcanic arcs [Talk] In: SFB 574 Subduction Workshop, 04.-07.11.2010, Pucon, Chile .


Kutterolf, S., Hansteen, T., Rickers-Appel, K., Freundt, A., Perez, W., Wehrmann, H. and Frische, M. (2010) Magmatic heavy halogen concentrations and degassed masses in late Pleistocene to Holocene Plinian eruptions of Nicaragua [Talk] In: European Geosciences Union General Assembly, 02.-07.05.2010, Vienna, Austria .


Hansteen, T., Kutterolf, S., Freundt, A., Frische, M., Wehrmann, H., Schmincke, H. U. and Horn, S. (2009) Stratospheric input of heavy halogens (Br, I) from large explosive eruptions: Information from melt inclusions [Talk] In: Goldschmidt Conference 2009, 21.-26.06.2009, Davos, Switzerland ; A493 .


Wehrmann, H., Hoernle, K., Portnyagin, M., Wiedenbeck, M., Heydolph, K. and van den Bogaard, P. (2008) CO2-turnover at the Central American subduction zone - insights from melt inclusions in mafic tephras [Other] In: IAVCEI General Assembly, 18.08.-25.08, Reykjavik, Iceland .


Kutterolf, S., Freundt, A., Perez, W., Wehrmann, H. and Schmincke, H. U. (2008) Mafic Plinian eruptions: A common phenomenon at the Central American volcanic arc [Talk] In: IAVCEI International Meeting, 18.-22.08, Reykjavik, Iceland .


Perez, W., Kutterolf, S., Freundt, A., Wehrmann, H. and Schmincke, H. U. (2007) CAVA magma production rates and volcanic hazards: Some aspects based on widespread tephras [Talk] In: Workshop to Integrate Subduction Factory and Seismogenic Zone Studies in Central America, 18.- 22.06, Heredia, Costa Rica .


Freundt, A., Kutterolf, S., Perez, W., Wehrmann, H. and Schmincke, H. U. (2007) CAVA magma production rates and volcanic hazards: Some aspects based on widespread tephras [Talk] In: US-MARGINS/SFB574 Workshop, 18.-22.06, San Jose, Costa Rica .


Freundt, A., Kutterolf, S., Perez, W., Wehrmann, H. and Schmincke, H. U. (2007) Magma production rates along the Central American Volcanic Arc [Talk] In: 97th Annual Meeting of the Geologische Vereinigung (GV) - The Oceans in the Earth System, International Conference 2007, 03.-05.10, Bremen .


Hoernle, K., Portnyagin, M., Wehrmann, H., Heydolph, K., Kutterolf, S., Freundt, A., Abt, D., Fischer, K., Grevemeyer, I., Ivandic, M., Rabbel, W., Thorwart, M. and Dinc-Akdogan, N. (2007) An overview of Volatile and Isotopic variations along the Central American Volcanic Front [Invited talk] In: AGU Fall Meeting 2007, 10.-14.12, San Francisco, USA .


Wehrmann, H. and Freundt, A. (2005) Bromine and iodine concentrations in volcanic glasses determined by Synchrotron-XRF: origin and partitioning of heavy halogens during basaltic-andesitic and rhyolitic arc magma formation at the Central American subduction zone [Talk] In: ECROFI XVIII (European Current Research on Fluid Inclusions) International Meeting, 06.-09.07, Siena, Italy .


Kutterolf, S., Schacht, U., Freundt, A., Wehrmann, H., Mörz, T., Schmidt, M. and Schmincke, H. U. (2005) Vulkanische Aschen im pazifischen Ozean vor Nicaragua und Costa Rica - Ergebnisse der Sonne Ausfahrt SO 173/3 [Talk] In: SONNE Statusseminar, 09.-11.03, Rostock-Warnemünde .


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 [Talk] In: IAVCEI Generally Assembly, 14.-20.11, Pucon, Chile .


Freundt, A., Kutterolf, S., Wehrmann, H., Schmincke, H. U. and Strauch, W. (2004) Tsunami in Lake Managua, Nicaragua, triggered by a compositionally zoned plinian eruption [Talk] In: IAVCEI Generally Assembly, 14.-20.11, Pucon, Chile .


Freundt, A., Kutterolf, S., Wehrmann, H., Perez, W., Schmincke, H. U. and Strauch, W. (2004) Volatile masses put into the stratosphere by arc-volcano plinian eruptions: Along-term record from Nicaragua [Talk] In: IAVCEI Generally Assembly, 14.-20.11, Pucon, Chile .


Kutterolf, S., Wehrmann, H., Schacht, U., Freundt, A. and Schmincke, H. U. (2003) Alteration, distribution, and correlation of ash layers in the pacific seafloor off Nicaragua with on-land tephras - Implications for Volatile release and eruption parameters [Talk] In: IAVCEI/IUGG international meeting, 09.-13.07, Sapporo, Japan .


Wehrmann, H., Kutterolf, S., Freundt, A. and Schmincke, H. U. (2003) Stratigraphy and Eruption Dynamics of, and volatile release from highly explosive volcanic eruptions in central Nicaragua during the last 30 ka [Talk] In: IUGG, 09.- 13.07, Sapporo, Japan .


Wehrmann, H., Kutterolf, S., Freundt, A. and Schmincke, H. U. (2003) Stratigraphy and eruption dynamics of, and volatile release from, highly explosive eruptions of the Central Nicaraguan volcanic front over the last 30ka [Talk] In: IAVCEI/IUGG international meeting, 09.-13.07, Sapporo, Japan .


Wehrmann, H., Freundt, A., Kutterolf, S., Schmincke, H. U. and Strauch, W. (2003) Volatile Release and Eruption Dynamics of a Basaltic Plinian Eruption From Masaya Caldera, Nicaragua [Talk] In: AGU - Fall Meeting, 08.- 12.12, San Francisco, USA .


Freundt, A., Wehrmann, H., Kutterolf, S. and Schmincke, H. U. (2003) Volatile injection into atmosphere from highly explosive arc-volcanoes: A ~5000 years record from Nicaragua [Talk] In: DMG-GV-DGG-Tagung, 22.-25.09 .


Wehrmann, H., Freundt, A., Kutterolf, S. and Schmincke, H. U. (2003) Volatile release and eruption dynamics of the basaltic-andesitic Fontana Tephra, Nicaragua [Talk] In: AGU international meeting, 08.-12.12, San Francisco, USA .

Conference poster


Jacques, G., Hoernle, K., Wehrmann, H., Gill, J. and Bindeman, I. (2013) Geochemical variations in the Central Southern Volcanic Zone, Chile (38-43°S): The role of fluids in generating arc magmas [Poster] In: Goldschmidt Conference 2013, 25.-30.08.2013, Florence, Italy .


Wehrmann, H., Dzierma, Y., Kutterolf, S. and Schaller, T. (2013) The probability of future plinian eruptions at the Central American Volcanic Arc: a statistical time series analysis [Poster] In: 73. Jahrestagung der Deutschen Geophysikalischen Gesellschaft, 04.-07.03.2013, Leipzig, Germany .

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Jacques, G., Hoernle, K., Hauff, F., Wehrmann, H., Gill, J., Garbe-Schönberg, D., van den Bogaard, P., Bindeman, I. and Lara, L. E. (2012) Across-arc geochemical variations in the Southern Volcanic Zone, Chile (34.5- 38.0°S): Constraints on Mantle Wedge and Input Compositions [Poster] In: AGU Fall Meeting 2012, 03.-07.12.2012, San Francisco, USA .


Jacques, G., Hoernle, K. A., Wehrmann, H., Garbe-Schönberg, D., van den Bogaard, P., Hauff, F., Mahlke, J., Schumann, K., Bindeman, I. and Lara, L. E. (2012) Along- and across-arc geochemical variations in the Southern Volcanic Zone, Chile [Poster] In: The Lübeck Retreat, Collaborative Research SFB 574 Volatiles and Fluids in Subduction Zones: Climate Feedback and Trigger Mechanisms for Natural Disasters, 23.05.-25.05.2012, Lübeck . The Lübeck Retreat: final colloquium of SFB 574; May 23-25, 2012: program & abstracts ; pp. 13-14 .


Kutterolf, S., Heydolph, K., Freundt, A., Hoernle, K., Hauff, F., Perez, W., Wehrmann, H., Garbe-Schönberg, D. and Schmincke, H. U. (2012) Comparing felsic and mafic volcanics along Central America with implications for interaction with continental crust [Poster] In: Goldschmidt Conference 2012, 24.-29.06.2012, Montreal, Canada .


Rabbel, W., Dzierma, Y., Thorwart, M., Wunderlich, T., Koulakov, I., Hoernle, K. and Wehrmann, H. (2012) From the Valdivia Fracture Zone to the Villarrica volcanic complex - seismic evidence of a link between subducted oceanic faults and volcanism [Poster] 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 ; p. 25 .


Wehrmann, H., Halama, R., Garbe-Schönberg, D., Hoernle, K., Jacques, G., Heydolph, K., Mahlke, J. and Schumann, K. (2012) On the fluid-mobility of molybdenum, tungsten, and antimony in subduction systems [Poster] 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 ; p. 37 .


Hoernle, K., Wehrmann, H., Jacques, G., Rivera, R. and Gill, J. (2012) Phreatomagmatic volcanism in the area of Cerro Azul, 35.7°S, Southern Volcanic Zone, Chile: La Resolana and Los Hornitos Cinder Cones and Maars [Poster] In: Hopi Buttes Volcanic Field Workshop: Interpreting Maar-Diatreme Volcanism using base to top exposures, syn-eruptive surface deposits and country-rock strata, 21.10.-27.10.2012, Flagstaff, Arizona, USA .

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Rabbel, W., Dzierma, Y., Thorwart, M., Wunderlich, T., Koulakov, I., Hoernle, K. and Wehrmann, H. (2012) Seismic evidence of a link between subducted oceanic faults and volcanism: A case study from South Central Chile [Poster] In: EGU General Assembly 2012, 22.-27.04.2012, Vienna, Austria .


Wehrmann, H., Hoernle, K., Jacques, G., Garbe-Schönberg, D., Schumann, K., Mahlke, J. and Lara, L. (2012) Sulphur and chlorine geochemistry of mafic to intermediate tephras from the Chilean Southern Volcanic Zone (33-43°S) compared with those from the Central American Volcanic Arc [Poster] 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. 37-38 .

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Wehrmann, H., Halama, R., Garbe-Schönberg, D., Hoernle, K., Jacques, G., Heydolph, K., Mahlke, J. and Schumann, K. (2011) On the fluid-mobility of molybdenum, tungsten, and antimony in subduction systems [Poster] In: Goldschmidt Conference 2011, 14.-19.08.2011, Prague, Czech Republic ; p. 2140 .


Wehrmann, H., Garbe-Schönberg, D., Hoernle, K., Jacques, G., Mahlke, J., Schumann, K. and van den Bogaard, P. (2010) On the fluid-mobility of molybdenum and tungsten in subduction zone volcanics: a comparative study of the Chilean Southern Volcanic Zone and the Central American Volcanic Arc [Poster] In: SFB 574 Subduction Workshop, 04.-07.11.2010, Pucon, Chile .


Wehrmann, H., Garbe-Schönberg, C. D., Jacques, G., Hoernle, K., Mahlke, J. and Schumann, K. (2010) Tephras from the Southern Chilean-Argentinian subduction system: high-resolution trace element analyses by LA-ICP-MS [Poster] In: 10th European Workshop on Laser Ablation, 29.06.-01.07.2010, Kiel, Germany .


Dzierma, Y. and Wehrmann, H. (2010) Young volcanoes in the Chilean Southern Volcanic Zone: A statistical approach to eruption prediction based on time series [Poster] In: 6th Alexander von Humboldt International Conference on Climate Change, Natural Hazards, and Societies, 14.-19.03.2010, Merida, Mexico .


Schumann, K., Wehrmann, H. and Friese, K. (2009) Geochemical investigation of the three volcanoes, Casablanca, Osorno and Cabeza de Vaca, Southern Volcanic Zone, Chile [Poster] In: 87. Tagung der Deutschen Mineralogischen Gesellschaft, 13.-16.09., Halle .


Völker, D., Kutterolf, S. and Wehrmann, H. (2009) The Southern Volcanic Zone of Chile: calculations of Holocene and Pleistocene volcano volumes and relations between volume distribution and subduction parameters [Poster] In: Lateinamerika-Kolloquium 2009, 06.04.-09.04, Göttingen .


Völker, D., Kutterolf, S. and Wehrmann, H. (2008) Comparative mass balance of volcanic edifices at the Southern Volcanic Zone of the Andes between 33°S and 46°S [Poster] In: 4th EGU Alexander von Humboldt International Conference - The Andes: Challenge for Geosciences, 24.-28.11, Santiago de Chile, Chile .


Wehrmann, H., Kutterolf, S., Hoernle, K., Freundt, A., Portnyagin, M. and Heydolph, K. (2008) Continental subduction settings: reduced volatile transport of Cl and S to the surface? [Poster] In: AGU Fall Meeting 2008, 15.-19.12.2008, San Francisco, USA .


Hansteen, T., Kutterolf, S., Freundt, A., Frische, M., Wehrmann, H., Schmincke, H. U. and Kluegel, A. (2008) Heavy Halogen (Br, I) Injections into the Stratosphere from Large Explosive Volcanic Eruptions: Information from Melt Inclusions [Poster] In: AGU International Meeting 2008, 15.-19.12.2008, San Francisco, USA .


Kutterolf, S., Völker, D., Wehrmann, H. and Hansteen, T. (2008) Volume Distribution of Volcanic Edifices at the Southern Volcanic Zone of the Andes Between 33°S and 46°S [Poster] In: AGU Fall Meeting 2008, 15.-19.12.2008, San Francisco, USA .


Wehrmann, H., Freundt, A. and Kutterolf, S. (2007) Exsolution of magmatic volatiles governing unususal eruptions: constraints on fragmentation and eruptive style of the mafic plinian Fontana eruption, Nicaragua [Poster] In: SubFac-SEIZE Workshop, 18.-22.06, Heredia, Costa Rica .


Wehrmann, H., Freundt, A. and Kutterolf, S. (2007) Magmatic volatile degassing governing unususal eruptions: constraints on fragmentation and eruptive style of the mafic plinian Fontana eruption, Nicaragua [Poster] In: 97th Annual Meeting of the Geologische Vereinigung (GV) - The Oceans in the Earth System, International Conference 2007, 01.-05.10, Bremen .


Wehrmann, H., Freundt, A., Kutterolf, S., Bonadonna, C., Houghton, B. F. and Schmincke, H. U. (2004) Dynamics of the basaltic Plinian Fontana eruption, Nicaragua [Poster] In: IAVCEI Generally Assembly, 14.-20.11, Pucon, Chile .


Kutterolf, S., Freundt, A., Wehrmann, H., Schmincke, H. U. and Strauch, W. (2004) Varying volatile release during dacitic Chiltepe Pumice eruption (Nicaragua): Response to compositional changes and magma mixing? [Poster] In: IAVCEI Generally Assembly, 14.-20.11, Pucon, Chile .

Thesis - not published by a publisher

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Wehrmann, H. (2005) Volatile degassing and plinian eruption dynamics of the mafic Fontana Tephra, Nicaragua (Doctoral thesis/PhD), Christian-Albrechts-Universität, Kiel, 111 pp

This list was generated on Thu Apr 24 19:37:43 2014 CEST.