Mitarbeiter

Priv.-Doz. Dr. rer. nat. Armin Freundt

Forschungsbereich 4: Dynamik des Ozeanbodens
FE Magmatische und hydrothermale Systeme

Adresse:
Wischhofstrasse 1-3
D-24148 Kiel

Wissenschaftliches Interesse

Physische Vulkanologie

Die Untersuchung pyroclastischer Ablagerungen, auch Tephras genannt (beides bedeutet fragmentiertes Material, das aus einer explosiven Vulkaneruption entstanden ist), an Land und am Meeresboden hat das Ziel, die vulkanischen Eruptions-, Transport- und Ablagerungsmechanismen zu rekonstruieren. Daraus ergeben sich wichtige Informationen über das Gefahrenpotential künftiger Eruptionen.

Geochemie und Petrologie magmatischer Gesteine

sind die Werkzeuge mit denen sich die Entwicklung von Magmen vom Erdmantel durch die Erdkruste bis hin zum Zeitpunkt der Eruption verfolgen lässt. Eine wichtige Rolle spielen dabei die volatilen Phasen (H2O, CO2, S, Halogene, usw., d.h. Stoffe die bei der Eruption als Gas freigesetzt werden). Zum Einen geht es darum, inwieweit der Eruptionsmechanismus von magmatischen Volatilen oder von externen Faktoren wie dem Kontakt des Magmas mit externem Wasser kontrolliert wird. Zum Anderen sind die Volatile die potentiell Klima-beeinflussenden Stoffe von Vulkaneruptionen.

Tephrostratigraphie

Die Entschlüsselung der zeitlichen Abfolge vulkanischer Ereignisse, insbesondere explosiver Eruptionen, ist die Grundvoraussetzung um zu verstehen wie sich einzelne Vulkane, Vulkankomplexe oder ganze vulkanische geotektonische Provinzen entwickelt haben im Hinblick auf Magmazusammensetzungen und Eruptionsverhalten, sowie deren kontrollierende Parameter. Solche Zeitreihen können extrapoliert werden, um künftige Entwicklungen und Risiken abzuschätzen. Ausserdem können aus dem Vergleich von Zeitreihen vulkanischer Aktivität und Paläo-Klima oder Paläo-Umwelt Merkmalen Wechselwirkungen zwischen beiden Systemen abgeleitet werden. Wenn es gelingt in den vulkanischen Zeitreihen neben den geochemischen Zusammensetzungen auch die jeweils eruptierten Magmamassen zu bestimmen, dann können Element-Budgets und Element-Flüsse durch Vulkansysteme und geotektonische Systeme wie z.B. Subduktionszonen gemessen werden.

Vulkanische Ozeaninseln und Subduktionszonen sind die Schwerpunkte meiner Forschung. Bei beiden ist es notwendig, Geländearbeit an Land mit marinen Expeditionen zur Beprobung am Ozeanboden zu kombinieren, um ein vollständiges Bild sowohl für einzelne Eruptionen wie auch für die gesamte Entwicklung eines Vulkansystems zu erhalten.

Projekte und Expeditionen

der letzten 20 Jahre:

Projekte

2001-2004 Gas-release record and degassing dynamics of Pleistocene to recent explosive arc volcanism, Projekt C4 im SFB 574, DFG Fr 947/S1-1

2003-2007 Rheologie, Transportmechanismen und Separationsprozesse pyroklastischer Ströme. DFG Fr 947/9-1 und 9-2

2004-2008 Volatile output from evolving magma systems in explosive eruptions, Projekt C4 im SFB 574, DFG Fr 947/S1-2

2007-2010 Phreatoplinian eruptions: Mechanisms derived from comparative case studies, DFG Fr 947/11-1, 11-2

2007-2009 Stress interaction between rift zones and unstable flanks on ocean island volcanoes, DFG Fr 947/12-1 (gemeinsam mit T. Walter, GFZ Potsdam)

2008-2012 Crustal controls on the volatile inventory of evolving arc magmas, and implications for volcanic hazards, Projekt C4 im SFB 574, DFG Fr 947/S1-3

2009-2012 A Joint Outreach Program of SFB 754 & 574, Projekt ÖA im SFB 574, DFG SFB 574/3-2009

2011-2013 Quaternary explosive volcanism of the Cape Verde Archipelago: On- and offshore tephrostratigraphy (DFG Fr 947/14-1)

Landexpeditionen

2002-2007 Geländearbeiten in Zentralamerika

2007-2011 Geländearbeiten in Chile/Argentinien

Marine Expeditionen

2005 RV METEOR M66/3b: Tephrostratigraphy offshore Central America's Pacific coast

2009/10 RV METEOR M80/3: Marine tephrostratigraphy of the Cape Verdes

2010 RV SONNE SO210: CHIFLUX tephrostratigraphy offshore Chile

2017 RV POSEIDON POS513: Aegean Tephras, Greece (chief scientist)

2017 RV METEOR M141: Azores Tephrostratigraphy (co-chief scientist)

2018 RV POSEIDON POS522: Stromboli tsunamis (chief scientist)

Publikationen

Number of items: 206.

Articles in a Scientific Journal - peer-reviewed

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Freundt, A. , Strehlow, K. , Kutterolf, S. and Schindlbeck-Belo, J. C. (2025) Magmatic evolution and magma chamber conditions of the Alpehué tephra from Sollipulli Volcano, Andean Southern Volcanic Zone, Chile/Argentina.

Contributions to Mineralogy and Petrology, 180 . Art.Nr. 3. DOI 10.1007/s00410-024-02195-0.

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Klügel, A., Hauff, F. , Beier, C., Pfänder, J. A., Freundt, A. , Römer, M. and Schönhofen-Romer, M. (2024) Late-Pleistocene rejuvenated volcanism and flank collapse deposits on a Cretaceous seamount near El Hierro, Canary Archipelago.

Marine Geology, 472 . Art.Nr. 107301. DOI 10.1016/j.margeo.2024.107301.

Kutterolf, S. , Brenner, M., Dull, R. A., Freundt, A. , Kallmeyer, J., Krastel, S. , Katsev, S., Lebas, E. , Meyer, A., Pérez, L., Rausch, J., Saballos, A., Schwalb, A. and Strauch, W. (2023) Workshop on drilling the Nicaraguan lakes: bridging continents and oceans (NICA-BRIDGE).

Scientific Drilling, 32 . pp. 73-84. DOI 10.5194/sd-32-73-2023.

Chang, Y. C., Mitchell, N. C., Schindlbeck-Belo, J. C. , Hansteen, T. H. , Freundt, A. , Hübscher, C. and Quartau, R. (2023) Emplacement history of volcaniclastic turbidites around the central Azores volcanic islands: Frequencies of slope landslides and eruptions.

Geosphere, 19 (3). pp. 654-675. DOI 10.1130/GES02570.1.

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Cisneros de Leon, A., Danisik, M., Schindlbeck-Belo, J. C. , Kutterolf, S. , Schmitt, A. K., Freundt, A. , Kling, J., Wang, K. L. and Lee, H. Y. (2023) Timing and recurrence intervals for voluminous silicic eruptions from Amatitlán caldera (Guatemala). Quaternary Science Reviews, 301 . Art.Nr. 107935. DOI 10.1016/j.quascirev.2022.107935.

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Kutterolf, S. , Freundt, A. , Druitt, T. H., McPhie, J., Nomikou, P., Pank, K., Schindlbeck-Belo, J. C. , Hansteen, T. and Allen, S. (2021) The medial offshore record of explosive volcanism along the central to eastern Aegean Volcanic Arc, part 2: Tephra ages and volumes, eruption magnitudes and marine sedimentation rate variations.

Geochemistry, Geophysics, Geosystems, 22 (12). e2021GC010011. DOI 10.1029/2021GC010011.

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Kutterolf, S. , Freundt, A. , Hansteen, T. H. , Dettbarn, R., Hampel, F., Sievers, C., Wittig, C., Allen, S., Druitt, T. H., McPhie, J., Nomikou, P., Pank, K., Schindlbeck-Belo, J. , Wang, K. ‐., Lee, H. ‐. and Friedrichs, B. (2021) The medial offshore record of explosive volcanism along the central to eastern Aegean Volcanic Arc, part 1: Tephrostratigraphic correlations.

Geochemistry, Geophysics, Geosystems, 22 (12). e2021GC010010. DOI 10.1029/2021GC010010.

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Cisneros de León, A., Schindlbeck-Belo, J. C. , Kutterolf, S. , Danisík, M., Schmitt, A. K., Freundt, A. , Pérez, W., Harvey, J. C., Wang, K. and Lee, H. (2021) A history of violence: magma incubation, timing and tephra distribution of the Los Chocoyos supereruption (Atitlán Caldera, Guatemala).

Journal of Quaternary Science, 36 (2). pp. 169-179. DOI 10.1002/jqs.3265.

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Pérez, W., Freundt, A. and Kutterolf, S. (2020) The basaltic plinian eruption of the ~6 ka San Antonio Tephra and formation of the Masaya caldera, Nicaragua. Journal of Volcanology and Geothermal Research, 401 (Article number 106975). DOI 10.1016/j.jvolgeores.2020.106975.

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Kutterolf, S. , Schindlbeck-Belo, J. C. , Rohr, I., Rademacher, M., de León, A. C., Eisele, S., Freundt, A. , Hernandez, W. and Wang, K. L. (2020) The Arce Tephra: Two subsequent paroxysmal Plinian eruptions from Coatepeque Caldera (El Salvador).

Journal of Volcanology and Geothermal Research, 390 (Article number 106673). DOI 10.1016/j.jvolgeores.2019.106673.

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Dull, R. A. , Southon, J. R., Kutterolf, S. , Anchukaitis, K. J. , Freundt, A. , Wahl, D. B. , Sheets, P., Amaroli, P., Hernandez, W., Wiemann, M. C. and Oppenheimer, C. (2019) Radiocarbon and geologic evidence reveal Ilopango volcano as source of the colossal ‘mystery’ eruption of 539/40 CE.

Quaternary Science Reviews, 222 (Article number 105855). DOI 10.1016/j.quascirev.2019.07.037.

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Freundt, A. and Kutterolf, S. (2019) The long-lived Chiltepe volcanic complex, Nicaragua: magmatic evolution at an arc offset. Bulletin of Volcanology, 81 (Article number 60). DOI 10.1007/s00445-019-1321-x.

Kutterolf, S. , Schindlbeck, J. C. , Jegen, M. , Freundt, A. and Straub, S. M. (2019) Milankovitch frequencies in tephra records at volcanic arcs: The relation of kyr-scale cyclic variations in volcanism to global climate changes.

Quaternary Science Reviews, 204 . pp. 1-16. DOI 10.1016/j.quascirev.2018.11.004.

Schindlbeck, J. C. , Kutterolf, S. , Freundt, A. , Eisele, S., Wang, K. L. and Frische, M. (2018) Miocene to Holocene marine tephrostratigraphy offshore northern Central America and southern Mexico: Pulsed activity of known volcanic complexes.

Geochemistry, Geophysics, Geosystems, 19 (11). pp. 4143-4173. DOI 10.1029/2018GC007832.

Schindlbeck, J. C. , Jegen, M. , Freundt, A. , Kutterolf, S. , Straub, S. M., Mleneck-Vautravers, M. J. and McManus, J. F. (2018) 100- kyr cyclicity in volcanic ash emplacement: evidence from a 1.1 Myr tephra record from the NW Pacific.

Scientific Reports, 8 (Article number 4440). DOI 10.1038/s41598-018-22595-0.

Schindlbeck, J. C. , Kutterolf, S. , Freundt, A. , Andrews, G. D. M., Wang, K. L., Völker, D., Werner, R., Frische, M. and Hoernle, K. (2016) Alkalic marine tephra layers at ODP Site 1241 - Major explosive eruptions from an oceanic volcano in a pre-shield stage?. Journal of Volcanology and Geothermal Research, 328 . pp. 96-104. DOI 10.1016/j.jvolgeores.2016.10.009.

Schindlbeck, J. C. , Kutterolf, S. , Freundt, A. , Alvarado, G. E., Wang, K. L., Straub, S. M., Hemming, S. R., Frische, M. and Woodhead, J. D. (2016) Late Cenozoic tephrostratigraphy offshore the southern Central American Volcanic Arc: 1. Tephra ages and provenance.

Geochemistry, Geophysics, Geosystems, 17 (11). pp. 4641-4668. DOI 10.1002/2016GC006503.

Schindlbeck, J. C. , Kutterolf, S. , Freundt, A. , Straub, S. M., Vannucchi, P. and Alvarado, G. E. (2016) Late Cenozoic tephrostratigraphy offshore the southern Central American Volcanic Arc: 2. Implications for magma production rates and subduction erosion.

Geochemistry, Geophysics, Geosystems, 17 (11). pp. 4585-4604. DOI 10.1002/2016GC006504.

Eisele, S., Freundt, A. , Kutterolf, S. , Hansteen, T. H. , Klügel, A. and Irion, I. M. (2016) Evolution of magma chambers generating the phonolitic Cão Grande Formation on Santo Antão, Cape Verde Archipelago. Journal of Volcanology and Geothermal Research, 327 . pp. 436-448. DOI 10.1016/j.jvolgeores.2016.09.016.

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Wehrmann, H., Freundt, A. and Kutterolf, S. (2016) The 12.4 ka Upper Apoyeque Tephra, Nicaragua: stratigraphy, dispersal, composition, magma reservoir conditions and trigger of the plinian eruption. Bulletin of Volcanology, 78 (6). art. no. 44. DOI 10.1007/s00445-016-1036-1.

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Eisele, S., Reißig, S. , Freundt, A. , Kutterolf, S. , Nürnberg, D. , Wang, K. L. and Kwasnitschka, T. (2015) Pleistocene to Holocene offshore tephrostratigraphy of highly explosive eruptions from the southwestern Cape Verde Archipelago. Marine Geology, 369 . pp. 233-250. DOI 10.1016/j.margeo.2015.09.006.

Kutterolf, S. , Hansteen, T. H. , Freundt, A. , Wehrmann, H., Appel, K., Krüger, K. and Perez, W. (2015) Bromine and chlorine emissions from Plinian eruptions along the Central American Volcanic Arc: From source to atmosphere. Earth and Planetary Science Letters, 429 . pp. 234-246. DOI 10.1016/j.epsl.2015.07.064.

Eisele, S., Freundt, A. , Kutterolf, S. , Ramalho, R. S., Kwasnitschka, T. , Wang, K. L. and Hemming, S. (2015) Stratigraphy of the Pleistocene, phonolitic Cão Grande Formation on Santo Antão, Cape Verde.

Journal of Volcanology and Geothermal Research, 301 . pp. 204-220. DOI 10.1016/j.jvolgeores.2015.03.012.

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Schindlbeck, J. C. , Kutterolf, S. , Freundt, A. , Straub, S. M., Wang, K. L., Jegen, M. , Hemming, S. R., Baxter, A. T. and Sandoval, M. I. (2015) The Miocene Galápagos ash layer record of Integrated Ocean Drilling Program Site Legs 334 and 344: Ocean-island explosive volcanism during plume-ridge interaction. Geology, 43 (7). pp. 599-602. DOI 10.1130/G36645.1.

Freundt, A. , Grevemeyer, I. , Rabbel, W., Hansteen, T. H. , Hensen, C. , Wehrmann, H., Kutterolf, S. , Halama, R. and Frische, M. (2014) Volatile (H2O, CO2, Cl, S) budget of the Central American subduction zone. International Journal of Earth Sciences, 103 (7). pp. 2101-2127. DOI 10.1007/s00531-014-1001-1.

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Freundt, A. , Halama, R., Suess, E. and Völker, D. (2014) Introduction to the special issue on SFB 574 “Volatiles and fluids in subduction zones: climate feedback and trigger mechanisms for natural disasters”. International Journal of Earth Sciences, 103 (7). pp. 1729-1731. DOI 10.1007/s00531-014-1059-9.

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Gilbert, D., Freundt, A. , Kutterolf, S. and Burkert, C. (2014) Post-glacial time series of explosive eruptions and associated changes in the magma plumbing system of Lonquimay Volcano, South Central Chile. International Journal of Earth Sciences, 103 (7). pp. 2043-2062. DOI 10.1007/s00531-012-0796-x.

Metzner, D., Kutterolf, S. , Toohey, M. , Timmreck, C., Niemeier, U., Freundt, A. and Krüger, K. (2014) Radiative forcing and climate impact resulting from SO2 injections based on a 200,000 year record of Plinian eruptions along the Central American Volcanic Arc. International Journal of Earth Sciences, 103 (7). pp. 2063-2079. DOI 10.1007/s00531-012-0814-z.

Schindlbeck, J. , Freundt, A. and Kutterolf, S. (2014) Major changes in the post-glacial evolution of magmatic compositions and pre-eruptive conditions of Llaima Volcano, Andean Southern Volcanic Zone, Chile. Bulletin of Volcanology, 76 (6). p. 830. DOI 10.1007/s00445-014-0830-x.

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Kutterolf, S. , Schindlbeck, J. , Scudder, R. P., Murray, R. W., Pickering, K. T., Freundt, A. , Labanieh, S., Heydolph, K., Saito, S., Naruse, H., Underwood, M. B. and Wu, H. (2014) Large volume submarine ignimbrites in the Shikoku Basin: An example for explosive volcanism in the Western Pacific during the Late Miocene.

Geochemistry, Geophysics, Geosystems, 15 (5). pp. 1837-1851. DOI 10.1002/2014GC005263.

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Kutterolf, S. , Jegen, M. , Mitrovica, J. X., Kwasnitschka, T., Freundt, A. and Huybers, P. J. (2013) A detection of Milankovitch frequencies in global volcanic activity. Geology, 41 (2). pp. 227-230. DOI 10.1130/G33419.1.

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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.

Schindlbeck, J. , Kutterolf, S. , Freundt, A. , Scudder, R. P., Pickering, K. T. and Murray, R. W. (2013) Emplacement processes of submarine volcaniclastic deposits (IODP Site C0011, Nankai Trough). Marine Geology, 343 . pp. 115-124. DOI 10.1016/j.margeo.2013.06.017.

Allen, S. R., Freundt, A. and Kurokawa, K. (2012) Characteristics of submarine pumice-rich density current deposits sourced from turbulent mixing of subaerial pyroclastic flows at the shoreline: field and experimental assessment. Bulletin of Volcanology, 74 (3). pp. 657-675. DOI 10.1007/s00445-011-0553-1.

Geilert, S., Freundt, A. , Wörner, G. and Kutterolf, S. (2012) Geochemical differences between along-arc and across-arc volcanics in west-central Nicaragua. Journal of South American Earth Sciences, 35 . pp. 38-50. DOI 10.1016/j.jsames.2011.11.004.

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Lube, G., Cronin, S. J., Manville, V., Procter, J., Cole, S. E. and Freundt, A. (2012) Energy growth in laharic mass flows. Geology, 40 (5). pp. 475-478. DOI 10.1130/G32818.1.

Kutterolf, S. , Freundt, A. and Burkert, C. (2011) Eruptive history and magmatic evolution of the 1.9 ka Plinian dacitic Chiltepe Tephra from Apoyeque volcano in west-central Nicaragua. Bulletin of Volcanology, 73 (7). pp. 811-831. DOI 10.1007/s00445-011-0457-0.

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Lube, G., Huppert, H. E., Sparks, R. S. J. and Freundt, A. (2011) Granular column collapses down rough, inclined channels. Journal of Fluid Mechanics, 675 . pp. 347-368. DOI 10.1017/jfm.2011.21.

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Freundt, A. , Hartmann, A., Kutterolf, S. and Strauch, W. (2010) Volcaniclastic stratigraphy of the Tiscapa maar crater walls (Managua, Nicaragua) : implications for volcanic and seismic hazards and Holocene climate changes. International Journal of Earth Sciences, 99 . pp. 1453-1470. DOI 10.1007/s00531-009-0469-6.

Schmincke, H. U. , Rausch, J., Freundt, A. and Kutterolf, S. (2010) Walking through volcanic mud : the 2,100 year-old Acahualina footprints (Nicaragua) II: the Acahualina people, environmental conditions and motivation. International Journal of Earth Sciences, 99 (Suppl 1). S279-S292. DOI 10.1007/s00531-009-0438-0.

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Perez, W., Freundt, A. , Kutterolf, S. and Schmincke, H. U. (2009) The Masaya Triple Layer: a 2100 year old basaltic multi-episodic Plinian eruption from the Masaya Caldera Complex (Nicaragua). Journal of Volcanology and Geothermal Research, 179 (3-4). pp. 191-205. DOI 10.1016/j.jvolgeores.2008.10.015.

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Schmincke, H. U. , Kutterolf, S. , Perez, W., Rausch, J., Freundt, A. and Strauch, W. (2009) Walking through volcanic mud: the 2000 year-old Acahualinca footprints (Nicaragua) I. Stratigraphy, lithology, volcanology and age of the Acahualinca section. Bulletin of Volcanology, 71 (5). pp. 479-493. DOI 10.1007/s00445-008-0235-9.

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Kutterolf, S. , Freundt, A. and Perez, W. (2008) Pacific offshore record of plinian arc volcanism in Central America: 2. Tephra volumes and erupted masses.

Geochemistry, Geophysics, Geosystems, 9 (Q02S02). DOI 10.1029/2007GC001791.

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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 (Q02S01). DOI 10.1029/2007GC001631.

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Kutterolf, S. , Freundt, A. , Schacht, U., Bürk, D., Harders, R., Mörz, T. and Perez, W. (2008) Pacific offshore record of plinian arc volcanism in Central America: 3. Application to forearc geology.

Geochemistry, Geophysics, Geosystems, 9 (Q02S03). DOI 10.1029/2007GC001826.

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Kutterolf, S. , Liebetrau, V., Mörz, T., Freundt, A. , Hammerich, T. and Garbe-Schönberg, C. D. (2008) Lifetime and cyclicity of fluid venting at forearc mound structures determined by tephrostratigraphy and radiometric dating of authigenic carbonates. Geology, 36 (9). pp. 707-710. DOI 10.1130/G24806A.1.

Freundt, A. , Strauch, W., Kutterolf, S. and Schmincke, H. U. (2007) Volcanogenic tsunamis in lakes: examples from Nicaragua and general implications. Pure and Applied Geophysics, 164 . pp. 527-545. DOI 10.1007/s00024-006-0178-z.

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.

Lube, G., Cronin, S. J., Platz, T., Freundt, A. , Procter, J., Henderson, C. and Sheridan, M. F. (2007) Flow and deposition of pyroclastic granular flows: a type example from the 1975 Ngauruhoe eruption, New Zealand. Journal of Volcanology and Geothermal Research, 161 . pp. 165-186. DOI 10.1016/j.jvolgeores.2006.12.003.

Lube, G., Huppert, H. E., Sparks, R. S. J. and Freundt, A. (2007) Static and flowing regions in granular collapses down channels. Physics of Fluids, 19 (043301). DOI 10.1063/1.2712431.

Allen, S. R. and Freundt, A. (2006) Resedimentation of cold pumiceous ignimbrite into water : facies transformations simulated in flume experiments. Sedimentology, 53 . pp. 717-734. DOI 10.1111/j.1365-3091.2006.00790.x.

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. DOI 10.1016/j.jvolgeores.2005.06.001.

Lube, G., Huppert, H. E., Sparks, S. J. and Freundt, A. (2005) Collapses of two-dimensional granular columns. Physical Review E, 72 (041301). DOI 10.1103/PhysRevE.72.041301.

Freundt, A. (2003) Entrance of hot pyroclastic flows into the sea: Experimental observations. Bulletin of Volcanology, 65 (2-3). pp. 144-164. DOI 10.1007/s00445-002-0250-1.

Freundt-Malecha, B., Schmincke, H. U. and Freundt, A. (2001) Plutonic rocks of intermediate composition on Gran Canaria: The missing link of the bimodal volcanic rock suite. Contributions to Mineralogy and Petrology, 1441 . pp. 430-445. DOI 10.1007/s004100100250.

Seyfried, R. and Freundt, A. (2000) Experiments on conduit flow and eruption behavior of basaltic volcanic eruptions.

Journal of Geophysical Research: Solid Earth, 105 (B10). pp. 23727-23740. DOI 10.1029/2000JB900096.

Freundt, A. (1999) The formation of high-grade ignimbrites, II: A pyroclastic suspension current model with implications also for low-grade ignimbrites. Bulletin of Volcanology, 60 . pp. 545-567. DOI 10.1007/s004450050251.

Freundt, A. (1998) The formation of high-grade ignimbrites, I: Experiments on high- and low-concentration transport systems containing sticky particles. Bulletin of Volcanology, 59 . pp. 414-435. DOI 10.1007/s004450050201.

Schmincke, H. U. , Freundt, A. , Rihm, R., Sumita, M., Krastel, S. and Hoernle, K. (1997) Vulkaninseln als ozeanische Geosysteme.

Geowissenschaften, 15 (9). pp. 301-305.

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Freundt, A. and Schmincke, H. U. (1995) Petrogenesis of rhyolite-trachyte-basalt composite ignimbrite P1, Gran Canaria, Canary Islands.

Journal of Geophysical Research: Solid Earth, 100 (B1). pp. 455-474. DOI 10.1029/94JB02478.

Freundt, A. and Schmincke, H. U. (1995) Eruption and emplacement of a basaltic welded ignimbrite during caldera formation on Gran Canaria. Bulletin of Volcanology, 56 . pp. 640-659. DOI 10.1007/BF00301468.

Freundt, A. and Schmincke, H. U. (1992) Abrasion in pyroclastic flows.

Geologische Rundschau, 81 . pp. 383-389. DOI 10.1007/BF01828605.

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Freundt, A. and Schmincke, H. U. (1992) Mixing of rhyolite, trachyte and basalt magma erupted from a vertically and laterally zoned reservoir, composite flow P1, Gran Canaria.

Contributions to Mineralogy and Petrology, 112 . pp. 1-19. DOI 10.1007/BF00310952.

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van den Bogaard, P., Schmincke, H. U. , Freundt, A. , Hall, C. M. and York, D. (1988) Eruption ages and magma supply rates during the Miocene evolution of Gran Canaria: Single-crystle 40Ar/39Ar laser ages. Naturwissenschaften, 75 . pp. 616-617. DOI 10.1007/BF00366475.

Freundt, A. and Schmincke, H. U. (1986) Emplacement of small-volume pyroclastic flows at Laacher See (East-Eifel, Germany). Bulletin of Volcanology, 48 . pp. 39-59. DOI 10.1007/BF01073512.

Freundt, A. and Tait, S. R. (1986) The entrainment of high-viscosity magma into low-viscosity magma in eruption conduits. Bulletin of Volcanology, 48 . pp. 325-339. DOI 10.1007/BF01074464.

Freundt, A. and Schmincke, H. U. (1985) Hierarchy of facies of pyroclastic flow deposits generated by Laacher See-type eruption. Geology, 13 . pp. 278-281. DOI 10.1130/0091-7613(1985)13<278:HOFOPF>2.0.CO;2.

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Freundt, A. and Schmincke, H. U. (1985) Lithic-enriched segregation bodies in pyroclastic flow deposits of Laacher See volcano (E-Eifel, Germany). Journal of Volcanology and Geothermal Research, 25 . pp. 193-224. DOI 10.1016/0377-0273(85)90013-7.

Articles in a Scientific Journal - without review

Freundt, A. (2011) Vulkanische Experimente. Geographische Rundschau, 63 (6). pp. 52-58.

Schwarzkopf, L. M., Schmincke, H. U. and Freundt, A. (1998) Eruptive mechanisms of Merapi Volcano during the 20th Century with emphasis on structure and transport of the block-and-ash flow of 1994. DGG-Mitteilungen, Sonderband III . pp. 21-24.

Books

Freundt, A. and Rosi, M., eds. (1998) From magma to tephra: Modelling physical processes of explosive volcanic eruptions. . Developments in Volcanology, 4 . Elsevier, Amsterdam, 318 pp.

Schmincke, H. U. , van den Bogaard, P. and Freundt, A. (1990) Quaternary Eifel volcanism excursion 1Al; Workshop on explosive volcanism, August 27 to September 2. . Pluto Press, Witten, 188 pp.

Book chapters

[thumbnail of Appendix 1: Characteristics and interpretations of volcaniclastic-rich layers]

+3 more...

Chang, Y. C., Mitchell, N. C., Hansteen, T. H. , Schindlbeck-Belo, J. C. and Freundt, A. (2023) Volcaniclastic deposits and sedimentation processes around volcanic ocean islands: the central Azores. In: Volcanic Processes in the Sedimentary Record: When Volcanoes Meet the Environment. , ed. by Di Capua, A., De Rosa, R., Kereszturi, G., Le Pera, E., Rosi, M. and Watt, S. F. L.. Geological Society London Special Publications, 520 . GSL (Geological Society London), London, pp. 523-546, 1 pp. ISBN 978-1-78620-566-7 DOI 10.1144/SP520-2021-62.

Freundt, A. , Schindlbeck-Belo, J. C. , Kutterolf, S. and Hopkins, J. L. (2023) Tephra layers in the marine environment: a review of properties and emplacement processes.

In: Volcanic Processes in the Sedimentary Record: When Volcanoes Meet the Environment. , ed. by Di Capua, A., De Rosa, R., Kereszturi, G., Le Pera, E., Rosi, M. and Watt, S. F. L.. Geological Society London Special Publications, 520 . GSL (Geological Society London), London , ?, 1 pp. DOI 10.1144/SP520-2021-50.

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. ; 1 , ed. by Bundschuh, J. and Alvarado Induni, G. E.. Taylor & Francis, London, pp. 395-421. ISBN 978-0-415-41648-1

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).

Perez, W. and Freundt, A. (2006) The youngest highly explosive basaltic eruptions from Masaya Caldera Complex (Nicaragua): Stratigraphy and hazard assessment. 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. 189-207. DOI 10.1130/2006.2412(10).

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. , Wilson, C. J. N. and Carey, S. N. (2000) Ignimbrites and block-and-ash flow deposits. In: Encyclopedia of volcanoes. , ed. by Sigurdsson, H.. Academic Press, New York, pp. 581-599.

Freundt, A. and Bursik, M. I. (1998) Pyroclastic flow transport mechanisms. In: From magma to tephra: Modelling physical processes of explosive volcanic eruptions. . Developments in Volcanology (4). Elsevier, Amsterdam, Netherlands, pp. 173-245.

Freundt, A. and Schmincke, H. U. (1998) Emplacement of ash layers related to high-grade ignimbrite P1 in the sea around Gran Canaria.

In: Proceedings of the Ocean Drilling Project: Scientific Results. ; 157 , ed. by Weaver, P. P. E., Schmincke, H. U., Firth, J. V. and Duffield, W. A.. Texas A & M University, College Station, Texas, pp. 201-218.

Bonse, U., Busch, F., Beckmann, F., Günnewig, O., Uebbing, H., Freundt, A. , Delling, G., Hahn, M. and Amling, M. (1994) Resolution enhancement in 3D microtomography of human bones and pumice fragments. In: HASYLAB Annual Report 1994. . German Electron-Synchrotron DESY , Hamburg, Germany, pp. 857-858.

van den Bogaard, P., Schmincke, H. U. , Freundt, A. and Park, C. (1990) Evolution of complex plinian eruptions: The Late Quaternary Laacher See case history. In: Thera and the Aegean world III : proceedings of the Third International Congress, Santorini, Greece, 3-9 September 1989. ; 2 , ed. by Hardy, D. A.. Thera Foundation, London, pp. 463-483. ISBN 0-9506133-5-5

Presentations

Chang, Y. C., Mitchell, N., Quartau, R., Hansteen, T. , Schindlbeck-Belo, J. and Freundt, A. (2022) Geological hazard assessment of volcanic islands: Insights from seafloor geomorphology and turbidites in sediment cores, central Azores Islands.

[Talk] In: EGU General Assembly 2022. , 23.05.-27.05.2022, Vienna, Austria . DOI 10.5194/egusphere-egu22-1025.

Eisele, S., Samrock, L. , Freundt, A. , Hansteen, T. H. , Barker, A. K., Kutterolf, S. , Kwasnitschka, T. and Grevemeyer, I. (2017) Widespread (>100 km) Tephra from a Deep-Sea (>3000 mbsl) Eruption at the Cape Verde Archipelago, Central-East Atlantic Ocean . [Talk] In: AGU Chapman Conference on Submarine Volcanism. , 29.01.-03.02.2017, Hobart, Tasmania, Australia .

Hansteen, T. H. , Kwasnitschka, T., Kutterolf, S. , Freundt, A. and Devey, C. W. (2017) Explosive emplacement of pyroclastic rocks containig abraded gabbro xenoliths at 3600 m water depth at Charles Darwin Volcanic Field, Cape Verde . [Talk] In: AGU Chapman Conference on Submarine Volcanism. , 29.01.-03.02.2017, Hobart, Tasmania, Australia .

Eisele, S., Freundt, A. , Kutterolf, S. and Ramalho, R. (2013) The phonolitic Cão Grande Plinian volcanism on Santo Antão, Cape Verde Islands: When, Where, How. [Talk] In: IAVCEI 2013. , 20.-24.07.2013, Kagoshima, Japan .

Kutterolf, S. , Jegen, M. , Schindlbeck, J. C. , Mitrovica, J. X., Kwasnitschka, T., Freundt, A. and Huybers , P. (2013) A detection of Milankovitch frequencies in tephra records of arc volcanism. [Invited talk] In: AGU Fall Meeting 2013. , 07.-13.12.2013, San Francisco, USA .

Gilbert, D., Freundt, A. and Burkert, C. (2012) Post-glacial time series of explosive eruptions and associated changes in the magma plumbing system of Lonquimay Volcano, South Central Chile. [Talk] In: The Lübeck Retreat, Collaborative Research Centre 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. ; p. 7 .

Gilbert, D., Freundt, A. and Kutterolf, S. (2012) Post-glacial time series of explosive eruptions and associated changes in the magma plumbing system of Lonquimay Volcano, South Central 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. ; p. 7 .

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 .

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 .

Metzner, D., Kutterolf, K., Toohey, M. , Timmreck, C., Niemeier, U., Freundt, A. and Krüger, K. (2012) Radiative Forcing and Climate Impact of explosive Central American Volcanic Arc Eruptions for the last 200 ka. [Talk] In: AGU Chapman Conference on Volcanism and the Atmosphere. , 10.-15.06.2012, Selfoss, Iceland .

Schindlbeck, J. , Freundt, A. , Kutterolf, S. and Strehlow, K. (2012) Geochemistry and thermobarometry of postglacial Llaima tephras. [Talk] In: Goldschmidt Conference 2012. , 24.-29.06.2012, Montreal, Canada .

Gilbert, D., Freundt, A. , Kutterolf, S. and Schindlbeck, J. (2011) Llaima, Lonquimay and Puyehue magmatic systems - a comparative attempt. [Talk] In: SFB574 Retreat. , 01.-02.10.2011, Sankelmark .

Gilbert, D., Freundt, A. , Kutterolf, S. , Hansteen, T. , Amigo, A. and Burkert, C. (2011) Magma chamber conditions (P, T, volatiles) of th June 2011 eruption of the Puyehue-Cordon Caulle volcanic complex, South Central Chile. [Talk] In: AGU Fall Meeting 2011. , 05.-09.12.2011, San Francisco, USA .

Gilbert, D., Freundt, A. , Kutterolf, S. , Burkert, C. and Garbe-Schönberg, D. (2011) Magmatic evolution and volatile inventory of the Lonquimay volcano, South Central Chile. [Talk] In: XXV IUGG General Assembly, Session V05. , 28.06.-07.07.2011, Melbourne, Australia .

Kwasnitschka, T., Hansteen, T. H. , Kutterolf, S. , Freundt, A. and Devey, C. W. (2011) 3D-reconstruction of recent volcanic activity from ROV video, Charles Darwin Seamounts, Cape Verdes. [Talk] In: AGU Fall Meeting 2011. , 05.12.-09.12.2011, San Francisco, California, USA .

Freundt, A. , Kutterolf, S. , Burkert, C., Gilbert, D., Lara, L. and Naranjo, J. (2010) Volatile contents of melt inclusions of tephras along and across the Southern Volcanic Zone, Chile – preliminary results. [Talk] In: SFB 574 Subduction Workshop. , 04.-07.11.2010, Pucon, Chile .

Gilbert, D., Freundt, A. , Kutterolf, S. and Burkert, C. (2010) Late Pleistocene to Holocene tephrostratigraphy of the Lonquimay Volcano, South Central Chile. [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 .

Jegen-Kulcsar, M. , Kutterolf, S. , Kwasnitschka, T. and Freundt, A. and European Geosciences Union (2010) Cyclic volcanism at convergent margins: linked to aarth orbital parameters or climate changes?. [Talk] In: EGU General Assembly 2010. , 02.05.-07.05.2010, Vienna, Austria . Geophysical Research Abstracts. .

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 .

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 .

Linke, P. , Freundt, A. , Geersen, J. , Kutterolf, S. , Liebetrau, V., Rovelli, L., Scholz, F., Sommer, S., Steeb, P., Treude, T. and Völker, D. (2010) ChiFlux - Identification and investigation of fluid flux, mass wasting and sediments in the forearc of the central Chilean subduction zone – First results from SONNE cruise SO-210. [Talk] In: SFB 574 SUBDUCTION WORKSHOP. , 04.-07.11.2010, Pucon, Chile .

[thumbnail of EGU2010_abstract_dmetzner.pdf]

Metzner, D., Toohey, M. , Lorenz, S., Niemeier, U., Brovkin, V., Kutterolf, S. , Freundt, A. , Timmreck, C. and Krüger, K. (2010) Simulations of the climate response to major volcanic eruptions using different complexities of eartch system climate models. [Talk] In: EGU General Assembly. , 02.-07.05.2010, Vienna, Austria .

Metzner, D., Zanchettin, D., Toohey, M. , Niemeier, U., Kutterolf, S. , Freundt, A. , Timmreck, C. and Krüger, K. (2010) Climate response and feedback to the large volcanic eruption of Los Chocoyos in the MPI ESM. [Talk] In: SFB 574 Subduction Workshop. , 04.-07.11.2010, Pucon, Chile .

Metzner, D., Zanchettin, D., Toohey, M. , Niemeier, U., Kutterolf, S. , Freundt, A. , Timmreck, C. and Krüger, K. (2010) Climate response and feedbacks of the large volcanic eruption Los Chocoyos in the MPI-ESM. [Talk] In: SFB 574 Subduction Workshop. , 04.-07.11.2010, Pucón, Chile .

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 . Geochimica et Cosmochimica Acta, 73 .

Kutterolf, S. , Freundt, A. , Kwasnitschka, T., Jegen-Kulcsar, M. , Graf, H. F., Perez, W. and Schmincke, H. U. (2009) Cyclic volcanism at convergent margins: controlled by global climate changes?. [Talk] In: EGU General Assembly. , 19.04.-23.04, Vienna, Austria .

Hansteen, T. , Freundt, A. , Kutterolf, S. and Galle, B. (2008) Magma flux rates through the Central American Volcanic Arc. [Talk] In: IAVCEI Generally Assembly. , 17.-22.08, 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., Freundt, A. and Kutterolf, S. (2008) The origin of the Masaya Caldera, Nicaragua. [Talk] In: IAVCEI Generally Assembly. , 17.-22.08, Reykjavik, Iceland .

Perez, W., Freundt, A. , Kutterolf, S. and Pullinger, C. (2008) The youngest eruptions from the Coatepeque Caldera (El Salvador): the Congo and Conacaste tephras. [Talk] In: IAVCEI Meeting. , 17.-22.08, Reykjavik, Iceland .

Freundt, A. , Kutterolf, S. and Hansteen, T. (2007) Estimating magma flux rates into the Central American Volcanic Arc (CAVA) using regional SO2 fluxes from quiescently degassing volcanoes. [Talk] In: Workshop to Integrate Subduction Factory and Seismogenic Zone Studies in Central America. , 18.- 22.06, Heredia, Costa Rica .

Freundt, A. , Kutterolf, S. and Hansteen, T. (2007) Are magma production rates along the Central American Volcanic Arc controlled by slab hydration?. [Talk] In: Latin America Colloquium 2007. , 11.-13.04, Kiel .

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 .

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 .

Hartmann, A., Freundt, A. , Kutterolf, S. and Strauch, W. (2007) Geological evolution of the Tiscapa Maar in Managua, Nicaragua. [Talk] In: Latin America Colloquium 2007. , 11.-13.04, Kiel .

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 .

Kutterolf, S. , Freundt, A. , Perez, W. and Schmincke, H. U. (2007) Plinian volcanism along the ring of fire - Cyclicity and compositions from the long-term marine tephra record at the Central American Volcanic Arc (CAVA). [Talk] In: Workshop to Integrate Subduction Factory and Seismogenic Zone Studies in Central America. , 18.- 22.06, Heredia, Costa Rica .

Kutterolf, S. , Freundt, A. , Perez, W. and Schmincke, H. U. (2007) Plinian volcanism along the ring of fire - Cyclicity and compositions from the long-term marine tephra record at the Central American Volcanic Arc (CAVA). [Talk] In: US-MARGINS/SFB574 Workshop. , 18.-22.06, San Jose, Costa Rica .

Kutterolf, S. , Freundt, A. , Perez, W. and Schmincke, H. U. (2007) Cyclicity and compositions of Plinian volcanism along the Central American Volcanic Arc (CAVA) - the long-term marine tephra record. [Talk] In: Latin America Colloquium 2007. , 11.-13.04, Kiel .

Perez, W., Freundt, A. and Kutterolf, S. (2007) Stratigraphic geochemical variations of the youngest explosive Masaya caldera complex tephras. [Talk] In: US-MARGINS/SFB574 Workshop. , 18.-22.06, San Jose, Costa Rica .

Perez, W., Freundt, A. and Kutterolf, S. (2007) Reconstruction of the 2,000 year old basaltic Plinian event from Masaya Caldera Complex (Nicaragua): the Masaya Triple Layer and La Concepción Tephra. [Talk] In: Latin America Colloquium 2007. , 11.-13.04, Kiel .

Perez, W., Kutterolf, S. and Freundt, A. (2007) Stratigraphic geochemical variations of the youngest explosive Masaya caldera complex tephras. [Talk] In: Workshop to Integrate Subduction Factory and Seismogenic Zone Studies in Central America. , 18.- 22.06, Heredia, Costa Rica .

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 .

Schmincke, H. U. , Kutterolf, S. , Freundt, A. , Perez, W., Rausch, J. and Strauch, W. (2007) Four major Late Holocene explosive eruptions that affected the larger Managua area (Nicaragua). [Talk] In: Cities on Volcanoes 5. , 20.11, Shimabara, Japan .

Schmincke, H. U. , Rausch, J., Kutterolf, S. and Freundt, A. (2007) Acahualinca revisited. [Talk] In: Latin America Colloquium 2007. , 11.-13.04, Kiel .

Hansteen, T. , Hoernle, K. , Kutterolf, S. , Freundt, A. and van den Bogaard, P. (2006) Volcanic ashes from large volcanic eruptions in Central and South America and the Caribbean igneous basement. [Other] In: IODP-Workshop "Tectonics, Circulation, and Climate in the Caribbean Gateway". , 31.04, Austin, Texas, USA .

Lube, G., Cronin, S. J., Platz, T., Freundt, A. , Procter, J., Henderson, C. and Sheridan, M. F. (2006) Flow and deposition of pyroclastic granular flows of the 1975 Ngauruhoe eruption, New Zealand. [Talk] In: EGU General Assembly 2006. , 06.04, Vienna, Austria .

Lube, G., Cronin, S. J., Platz, T., Freundt, A. , Procter, J., Henderson, C. and Sheridan, M. F. (2006) Flow and deposition of pyroclastic granular flows of the 1975 Ngauruhoe eruption, New Zealand. [Talk] In: 17th International Sedimentological Congress. , 28.08, Fukuoka, Japan .

Lube, G., Huppert, H. E., Sparks, R. S. J. and Freundt, A. (2006) Static and flowing regions in granular collapses down channels. [Talk] In: Gordon Research Conference 2007 "Granular and Granular-fluid Flow". , 25.07, Oxford, UK .

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 .

Schmincke, H. U. , Freundt, A. , Kutterolf, S. and Perez, W. (2005) Escaping from a powerful eruption - the 6000 years old human footprints at Acahualinca (Nicaragua). [Talk] In: International Lateinamerika-Kolloquium (LAK). , 18.04.-20.04.2005, Potsdam, Germany .

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 .

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 .

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 .

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 .

Schmincke, H. U. , Sumita, M. and Freundt, A. (2004) Source-controlled and eruption-controlled flow units in ignimbrites. [Talk] In: IAVCEI Generally Assembly 2004. , 14.-20.11.2004, Pucon, Chile .

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 GEO2003. , 22.- 25.09.2003, Bochum, Germany .

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.-13.07.2003, Sapporo, Japan .

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 2003. , 08.-12.12.2003, San Francisco, USA .

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 2003. , 08.-12.12.2003, San Francisco, USA .

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.- 13.07.2003, 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.-13.07.2003, Sapporo, Japan .

Freundt, A. (2001) The entry of pyroclastic flows into the sea. [Talk] In: AGU Fall Meeting 2001. , 10.-12.12.2001, San Francisco, USA .

Schmincke, H. U. , Sumita, M., Rihm, R., Freundt, A. and Hoernle, K. (1996) Underplating Beneath the Canary Islands: Petrologic, Tectonic and Seismic Evidence. [Talk] In: Chapman Conference on Magnetic Storms. , 12.-16.02.1996, Pasadena, California .

Schmincke, H. U. , Sumita, M., Freundt, A. , Hoernle, K. and van den Bogaard, P. (1995) The oceanic basalt-rhyolite association of Gran Canaria: Evidence from Land and from the sea. [Talk] In: IUGG 21. General Assembly. , 02.07.-14.07.18, Boulder, Colorado .

Schmincke, H. U. , Hoernle, K. , Freundt, A. , Sachs, P. and Hansteen, T. (1993) Temporal, volcanic and compositional evolution of the Canay Islands. [Talk] In: IAVCEI International Volcanological Congress 1993. , 1993, Canberra, Australia .

Schmincke, H. U. , Ferriz, H., Freundt, A. , Gerbe, M. C., Hoernle, K. , Kobberger, G., Kramel, M., Leat, P., Schirnick, C. , Sumita, M., Sumnar, J. and Bogaard, P. (1992) Evolution of the Miocene Tejeda caldera from Gran Canaria (Canary Islands). [Talk] In: 29. IGC, International Geological Conference. , 26.-27.08.1992, Kyoto, Japan .

Freundt, A. and Schmincke, H. U. (1990) The densely welded basaltic ignimbrite P1 on Gran Canaria. [Talk] In: IAVCEI International Volcanological Congress 1990. , 1990, Mainz, Germany .

Conference posters

[Poster] In: EGU General Assembly 2016. , 17.-22.04.2016, Vienna, Austria .

Schindlbeck, J. C. , Kutterolf, S. , Freundt, A. , Straub, S. M., Wang, K. L., Jegen, M. , Hemming, S. R., Baxter, A. R. and Sandoval, M. (2015) Plinian Galápagos volcanism- evidence in ODP/IODP Legs offshore Central America. [Poster] In: IODP/ICDP Kolloquium 2015. , 02.-04.03.2015, Bonn, Deutschland .

Eisele, S., Freundt, A. , Kutterolf, S. , Reißig, S. and Nürnberg, D. (2013) Temporal succession, intensities, and magmatic evolution of large-magnitude Plinian eruptions from Fogo and Brava, Cape Verde Islands. [Poster] In: IAVCEI 2013. , 20.-24.07.2013, Kagoshima, Japan .

Kwasnitschka, T., Hansteen, T. , Devey, C. , Freundt, A. and Kutterolf, S. (2013) Explosive Volcanic Activity at Extreme Depths: Evidence from the Charles Darwin Volcanic Field, Cape Verdes. [Poster] In: AGU Fall Meeting 2013. , 09.-13.12.2013, San Francisco, USA .

Schindlbeck, J. , Kutterolf, S. and Freundt, A. (2013) 8 Ma time series of explosive volcanism at the Central American Volcanic Arc (marine tephras from ODP and DSDP sites). [Poster] In: IAVCEI 2013. , 20.-24.07.2013, Kagoshima, Japan .

Schindlbeck, J. , Kutterolf, S. and Freundt, A. (2013) Emplacement processes and provenance of submarine volcaniclastic deposits (IODP Site C0011, Nankai Trough). [Poster] In: IAVCEI 2013. , 20.-24.07.2013, Kagoshima, Japan .

Strehlow, K. , Freundt, A. , Kutterolf, S. and Schindlbeck, J. (2013) The Alpehué Eruption Sollipulli Caldera, Southern Chile. [Poster] In: VMSG Meeting 2013. , 07.-09.01.2013, Bristol, United Kingdom .

Burkert, C., Hansteen, T. , Freundt, A. and Kutterolf, S. (2012) Along-arc variations in magma chamber depth of large explosive eruptions in Central America: constraints from fluid inclusions and mineralogy. [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, Germany . The Lübeck Retreat - final colloquium of SFB 574, May 23-25, 2012: program & abstracts. ; p. 4 .

Gilbert, D., Freundt, A. , Kutterolf, S. , Burkert, C. and Garbe-Schönberg, D. (2012) Magmatic evolution and volatile inventory of the Lonquimay Volcano, South Central 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. ; p. 7 .

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 .

Metzner, D., Kutterolf, K., Toohey, M. , Timmreck, C., Niemeier, U., Freundt, A. and Krüger, K. (2012) Radiative Forcing and Climate Impact of explosive Central American Volcanic Arc Eruptions for the last 200 ka. [Poster] In: AGU Chapman Conference on Volcanism and the Atmosphere. , 10.-15.06.2012, Selfoss, Iceland .

Metzner, D., Kutterolf, S. , Toohey, M. , Timmreck, C., Niemeier, U., Freundt, A. and Krüger, K. (2012) Radiative Forcing and Climate Impact of explosive Central American Volcanic Arc Eruptions for the last 200 ka. [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. 19 .

Schindlbeck, J. , Freundt, A. , Kutterolf, S. and Strehlow, K. (2012) Holocene post-caldera magma evolution of Llaima volcano, 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.-25.05.2012, Lübeck . The Lübeck Retreat: final colloquium of SFB 574; May 23-25, 2012: program & abstracts. ; pp. 27-28 .

Gilbert, D., Freundt, A. and Kutterolf, S. (2011) Magmatic evolution of the two caldera-forming eruptions of the Apoyo Caldera, Nicaragua. [Poster] In: XXV IUGG General Assembly, Session V03. , 28.06.-07.07.2011, Melbourne, Australia .

Kutterolf, S. , Freundt, A. , Schindlbeck, J. , Scudder, R. P., Pickering, K. T., Naruse, H., Underwood, M. B. and Wu , H. (2011) Tuffaceous sandstones from IODP Expedition 322 at Site C0011B, Nankai Trough: Sources and emplacement processes. [Poster] In: IUGG General Assembly 2011 "Earth on the Edge: Science for a Sustainable Planet". , 28.06.-07.07.2011, Melbourne, Australia .

Kutterolf, S. , Schindlbeck, J. , Freundt, A. , Scudder, R. P., Pickering, K. T., Labanieh, S., Naruse, H., Underwood, M. B. and Wu, H. (2011) Formation and origin of tuffaceous sandstones from IODP Expedition 322, Nankai Trough. [Poster] In: AGU Fall Meeting 2011. , 05.-09.12.2011, San Francisco, USA .

Kutterolf, S. , Schindlbeck, J. , Freundt, A. , Scudder, R. P., Pickering, K. T., Naruse, H., Underwood, M. B. and Wu, H. (2011) Formation and origin of tuffaceous sandstones from IODP Expedition 322, Nankai Trough. [Poster] In: IODP Expedition 322: 2nd post cruise meeting. , 25.09.-28.09.2011, Barcelona, Spain .

Schindlbeck, J. , Kutterolf, S. and Freundt, A. (2011) Emplacement processes of tuffaceous sandstones at IODP Site C0011B, Nankai Trough, derived from modal analysis. [Poster] In: AGU Fall Meeting 2011. , 05.-09.12.2011, San Francisco, USA .

Schindlbeck, J. , Kutterolf, S. and Freundt, A. (2011) Emplacement processes of tuffaceous sandstones at IODP Site C0011B, Nankai Trough, derived from modal analysis. [Poster] In: IODP Expedition 322: 2nd post cruise meeting. , 25.09.-28.09.2011, Barcelona, Spain .

Burkert, C., Freundt, A. , Gilbert, D. and Kutterolf, S. (2010) Origin of magmatic components in the Diamante Tuff. [Poster] In: SFB 574 Subduction Workshop. , 04.-07.11.2010, Pucon, Chile .

Gilbert, D., Freundt, A. , Kutterolf, S. and Burkert, C. (2010) Late pleistocene to holocene tephrostratigraphy of the Lonquimay volcano, South Central Chile. [Poster] In: AGU Fall Meeting 2010. , 13.-17.12.2010, San Francisco, USA .

Jegen, M. D. , Kutterolf, S. , Mitrovica, J. X., Kwasnitschka, T., Freundt, A. and Huybers, P. (2010) A detection of Milankovitch Periodocity in records of global arc volcanism. [Poster] In: AGU Fall Meeting 2010. , 13.12.-17.12.2010, San Francisco, California, USA .

[thumbnail of Summer_School_presentation3.pdf]

Metzner, D., Toohey, M. , Lorenz, S., Niemeier, U., Brovkin, V., Kutterolf, S. , Freundt, A. , Timmreck, C. and Krüger, K. (2010) Climate response to major volcanic eruptions in earth system climate models of different complexities. [Poster] In: Summer School "Governing Climate Engineering". , 12.-16.07.2010, Heidelberg, Germany .

Metzner, D., Toohey, M. , Lorenz, S., Niemeier, U., Kutterolf, S. , Freundt, A. , Brovkin, V., Timmreck, C. and Krüger, K. (2010) Climate response to major volcanic eruptions in earth system models of different complexities. [Poster] In: 1. young Scientist Excellence Cluster Conference on Marine and Climate Research. , 04.-06.10.2010, Hamburg, Germany .

Strehlow, K. , Kutterolf, S. , Freundt, A. and Kwasnitschka, T. (2010) Pliocene to Quaternary Central American tephrostratigraphy based on marine Tephras from ODP and DSDP sites - first comprehensive study. [Poster] In: AGU Fall Meeting 2010. , 13.-17.12.2010, San Francisco, USA .

Gilbert, D., Freundt, A. and Kutterolf, S. (2009) Magmatic evolution of the two caldera-forming Tephras of the Apoyo-Caldera/Nicaragua. [Poster] In: Lateinamerika-Kolloquium. , 07.04.-09.04, Göttingen .

Metzner, D., Krüger, K., Timmreck, C., Kutterolf, S. and Freundt, A. (2009) A new radiative forcing data set comprising the major volcanic eruptions from the Central American Volcanic Arc for paleo studies. [Poster] In: EGU General Assembly. , 21.04, Vienna, Austria .

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 .

Krüger, K., Hansteen, T. , Timmreck, C., Kutterolf, S. and Freundt, A. (2008) SFB 574: Modelling climate effects and feedbacks of past Central and South American major volcanic eruptions. [Poster] In: IAVCEI 2008. , 18.08, Reykjavik, Iceland .

Kutterolf, S. , Freundt, A. , Harders, R., Liebetrau, V., Mörz, T. and Perez, W. (2008) Tephrostratigraphy as a tool to date Quaternary geological processes at the Central American submarine forearc. [Poster] In: IAVCEI Generally Assembly. , 17.-22.08, Reykjavik, Iceland .

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 .

Burkert, C., Freundt, A. , Kutterolf, S. and Strauch, W. (2007) Geological evolution of the Xiloà Maar in Nicaragua. [Poster] In: Latin America Colloquium 2007. , 11.-13.04, Kiel .

Kutterolf, S. , Freundt, A. and Perez, W. (2007) Cyclic plinian volcanism at the Central American Volcanic Arc and along the Ring of Fire: response to climate changes?. [Poster] In: 97th Annual Meeting of the Geologische Vereinigung (GV) - The Oceans in the Earth System, International Conference 2007. , 03.-05.10, Bremen .

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 .

Perez, W., Freundt, A. and Kutterolf, S. (2006) Highly explosive eruptions from Masaya Caldera Complex, central Nicaragua, during the past 6,000 years: Stratigraphy, geochemistry and hazard aspects. [Poster] In: EGU General Assembly. , 02.-07.04, Vienna, Austria .

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 .

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 .

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 .

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 .

Schwarzkopf, L. M., Schmincke, H. U. and Freundt, A. (1999) The block-and-ash flow and surge deposits of July 1998 eruption of Merapi Volcano, Central Java. [Poster] In: EUG 10 (European Union of Geosciences). , 28.03.-01.04.1999, Strasbourg, France .

Freundt, A. and Schmincke, H. U. (1989) Multicomponent mixing of zoned magma bodies at the transition from oceanic basaltic shield to caldera-forming silicic volcanism: P1, Gran Canaria. [Poster] In: IAVCEI General Assembly 1989. , 25.06.-01.07.1989, Santa Fe, USA .