Session 3.11: Multidisciplinary perspectives on the dynamics and hazards of Collapse Calderas
Talks:
Posters:
Talks
Post-climatic evolution of supervolcanoes implicate significant volumes of residual mush remains after climactic eruptions.
Shanaka de Silva
Thursday, 10:30 - 10:45
Reservoir reconstruction at Torfajökull volcano after the Thórsmörk super-eruption, identified through zircon age distribution and mineral chemistry
Zoe Moser 1,Razvan Popa1, Marcel Guillong1, Sæmundur Ari Halldórsson2, Kristján Jónasson3, Olivier Bachmann1
Thursday, 10:45 - 11:00
Magma residence time of magma chambers at shallow crustal depths in past caldera eruptions in Japan
Yoshiyuki Yasuike 1, Nobuo Geshi2, Keiko Matsumoto3, Ikuko Yamada3, Popa Razvan-Gabriel4, Bachmann Olivier4
Thursday, 11:00 - 11:15
Timing and eruptive characteristics of the 349 ka Whakamaru supereruption sequence constrained by high-resolution analysis of tephra sites around New Zealand
^^ Anna Miller^^ 1, Simon Barker1, Colin Wilson1, Kat Holt2, Stephen Piva1
Thursday, 11:15 - 11:30
Unravelling the eruption history of the Drammen Caldera: A multidisciplinary study of caldera-forming processes in the Permian Oslo Rift, Norway
Guro L. Andersen1 , Henrik H. Svensen1, Lars E. Augland1, Sara Callegaro1,2, Jack W. Whattam1, Frances M. Deegan3, Heejin Jeon4, Martin J. Whitehouse4
Thursday, 14:15 - 14:30
The rapid resurgence of the ice-covered Bárdarbunga after the 2014-2015 caldera collapse, evidence from repeated gravity surveys and other data
Magnús T. Gudmundsson , Thórdís Högnadóttir, Eyjólfur Magnússon, Finnur Pálsson, Hannah Reynolds, Tom Winder, Elías Rafn Heimisson, Bryndís Brandsdóttir, Freysteinn Sigmundsson
Thursday, 14:30 - 14:45
Impact of the 2007 caldera collapse to eruptive variability at Piton de la Fournaise: insights from long-term satellite-retrieved effusion rate.
Adele Campus 1, Nicolas Villeneuve2,3,4, Oryaëlle Chevrel3,4,5, Aline Peltier3,4, Andrea Di Muro6, Diego Coppola1
Thursday, 14:45 - 15:00
Exploring the 2018 Kilauea Caldera Collapse with a New Benchmarked 3D Distinct Element Method Model
Thomas W. Austin1,2, Claire E. Harnett1,2, Eoghan P. Holohan1,2, Alexis Hrysiewicz1,2, Martin Schöpfer3
Thursday, 15:00 - 15:15
Posters
Insights into Caldera Collapse Mechanics and Outstanding Questions from the 2018 Kīlauea Event
Paul Segall1, Taiyi Wang2, Josh Crozier1, Mark Matthews3, Kyle Anderson4, Enrique del Castillo5
Thursday, 16:30 - 18:30 • 49
GeoNet observations during the 2022-23 unrest episode at Taupō caldera volcano, Aotearoa New Zealand
Oliver Lamb1 , Sigrún Hreinsdóttir2, William Power2, Stephen Bannister2, John Ristau2, Craig Miller1, Eleanor Mestel3, Finnigan Illsley-Kemp3, Katie Jacobs2, Steve Sherburn1, Jonathan Hanson2, Elisabetta D'Anastasio2, Eveanjelene Snee2, Mike Ross2, Ian Hamling2, Aleksandr Spesivtsev2, Jean Roger2, Aditya Gusman2, Xiaoming Wang2, David Burbidge2, Michael Rosenberg1, Jackson Shanks1, Cameron Asher1, Karen Britten1, Richard Johnson1
Thursday, 16:30 - 18:30 • 50
Small scale caldera collapse - A numerical study on central vent caldera-foming eruptions
Pascal Aellig1, Albert de Montserrat2, Boris Kaus1
Thursday, 16:30 - 18:30 • 51
Geodetic and seismic moment calculations for caldera collapse events
Savannah C. Devine1, Eoghan P. Holohan1, Claire E. Harnett1, Chris J. Bean2
Thursday, 16:30 - 18:30 • 52
Time gap during VEI>6 caldera-forming eruptions: constraint from paleomagnetic directions for preceding airfall and following ignimbrite
Takeshi Hasegawa 1, Nobutatsu Mochizuki2, Gravley Darren3, Shohei Shibata1, Madison Myers4, Chie Kusu1
Thursday, 16:30 - 18:30 • 53
Effects of regional stress state and pore fluid pressure on the onset and style of caldera collapse
Matías A. Villarroel a, b, Martin P.J. Schöpferc, John Browninga,d, Eoghan P. Holohanb, Claire E. Harnettb, Carlos J. Marquardta,d, Pamela P. Jarae
Thursday, 16:30 - 18:30 • 54
Computer vision geodesy and simulations of caldera collapse cycles at Kīlauea
Josh Crozier 1, Paul Segall1, Kyle Anderson2, Anna Melega3, Matthew Patrick4
Thursday, 16:30 - 18:30 • 55
Reconstruction of the pre-caldera-forming phase during the 7.3 ka eruption at the Kikai Caldera (Akahoya eruption) based on geological analyses and plume modeling
Yusuke Haruta , Fukashi Maeno, Yujiro Suzuki
Thursday, 16:30 - 18:30 • 56
Variation of the magma chamber decompression and scale of precursory eruption for caldera-forming eruptions
Nobuo Geshi1
Thursday, 16:30 - 18:30 • 57
Caldera-Forming Eruptions at Basaltic Volcanoes: Outcomes from the 2025 AGU Chapman Conference in Hilo, Hawaiʻi
^^ Kyle R. Anderson1^^ , Ashton F. Flinders2, Kendra J. Lynn2, Aline Peltier3, Michael P. Poland4, and Thomas Shea5
Thursday, 16:30 - 18:30 • 58
The caldera-forming eruption of the Tufo Rosso a Scorie Nere (RNR): insight from geological fieldwork and geochemistry
Alessandro Frontoni 1,3, Guilherme Gualda2, Andrea Bonamico3, Cioni Raffaello4, Sandro Conticelli1,4, Guido Giordano1,3
Thursday, 16:30 - 18:30 • 59
A thick lithic gravel-sand bed buried deep inside Santorini caldera, and its possible relationship to caldera flooding. IODP Expedition 398 Hellenic Arc Volcanic Field
Tim Druitt 1, Sarah Beethe2, Natasha Keeley3, Charlie Wallace4, Abigail Metcalfe1, Katharina Pank5, Jonas Preine6, Sofia Della Sala4, David Pyle4, Ralf Gertisser3, Steffen Kutterolf5, Olga Koukousioura7, Paraskevi Polymenakou8, and IODP Expedition 398 scientists
Thursday, 16:30 - 18:30 • 60
Role of External Processes in the Initiation and Modulation of Explosive Volcanism at Christiana-Santorini-Kolumbo. IODP Expedition 398 Hellenic Arc Volcanic Field
Abigail Metcalfe1 , Tim Druitt1, Katharina Pank2, Steffen Kutterolf2, Jonas Preine3, Christian Hübscher4, Paraskevi Nomikou5 and IODP Expedition 398 Participants
Thursday, 16:30 - 18:30 • 61
High-Resolution Microseismicity Provides Insights into Ring-Fault Geometry at the Re-inflating Bárðarbunga Caldera, Iceland
Tom Winder 1, Elías Rafn Heimisson1, Nick Rawlinson2, Bryndís Brandsdóttir1, Kristín Jónsdóttir3 and Robert S. White2
Thursday, 16:30 - 18:30 • 62
Rejuvenation of the Kos-Nisyros-Yali magmatic system after the caldera collapse events on Nisyros
Sam Winsemius , Razvan-Gabriel Popa, Olivier Bachmann
Thursday, 16:30 - 18:30 • 63
Reconstruction of the 13.1 Ma large volume caldera-forming SAU eruption in the northeast Pannonian Basin: a case of silicic volcanism at the latest stage of subduction.
János Szepesi1,2 Péter Gál2, Dorka Gombos3, Samuel Rybar4,5, Katarína Šarinová6, Viktória Subová4, Marcel Guillong7, Maxim Portnyagin8, Maurizio Petrelli9, Dawid Szymanowski7, Olivier Bachmann7 László Fodor,10,11 Szabolcs Harangi2,3, Réka Lukács2
Thursday, 16:30 - 18:30 • 64
Structural and temporal analysis of a caldera collapse using high-resolution drone imagery: Askja volcano, central Iceland.
Nicolas Serrano1, Nicolas Oestreicher2, Thorsteinn Saemundsson3, Elisabetta Panza1, Joël Ruch1
Thursday, 16:30 - 18:30 • 65
Outline of the 2022-2024 eruption at Ioto Island (Iwo-jima), Ogasawara, Japan : small subaqueous eruption associated with shallow magma intrusion towards theof caldera floor
Masashi Nagai 1, Takahiro Miwa1, Setsuya Nakada1, Hideki Ueda1, Hirochika Sumino2, Atsushi Yasuda3, Tomofumi Kozono1, Takashi Hirose4, Hiroki Minami5 and Tetsuo Kobayashi6
Thursday, 16:30 - 18:30 • 66
Water column survey and structural analysis at the Öskjuvatn lake during a caldera unrest (Askja, central Iceland)
Robin Menu1, Nicolas Oestreicher1, 2, 3, Cesar Fernando Ordones Valdebenito4, Daniel Franck McGinnis4, Tom Sheldrake1, Angel Ruiz-Angulo5, Þorsteinn Sæmundsson5, 6, Ármann Höskuldsson5, Joël Ruch1
Thursday, 16:30 - 18:30 • 67
Probing the pre-, syn-, and post-caldera: a field, micro-CT, and petrological study of Mt. Ijen volcano, Indonesia
Nicholas D. Barber^1^, Esti Handini2, Geika Pramana Surya2, Antonios Ratdomopurbo3, Allison Hidalgo1, Lillian Peskova1, India Balkaran1, Parker Comisac1,4, Gianmarco Buono5, Lucia Pappalardo5, Tantri Raya Ayuningtyas6, Kim Berlo7, Vincent van Hinsberg7
Thursday, 16:30 - 18:30 • 68
Origin and tempo of Miocene large caldera forming silicic eruptions in the Pannonian basin: What we can learn from the zircon and volcanic glass database
Réka Lukács1, Mihovil Brlek2, Nina Trinajstić2, Razvan Bercea3,4, Sorin Filipescu3, Samuel Rybar5,6, Katarína Šarinová7, Viktória Subová5, Slavomír Nehyba8, Péter Gál1, János Szepesi 1,9, Krisztina Sebe10, Sándor Józsa11, Jörn-Frederik Wotzlaw12, H. Albert Gilg13, Marcel Guillong12, Maxim Portnyagin14, Maurizio Petrelli15, Sean P. Gaynor16, Dawid Szymanowski12, Olivier Bachmann12, Attila Virág1,9, Szabolcs Harangi1,9
Thursday, 16:30 - 18:30 • 69
