V23F:
How and When Do Volcanic Eruptions Start and Stop, and What Controls the Tempo of Everything in Between? I


Session ID#: 8269

Session Description:
There is much information now accumulating about the timing of volcanic eruptions, from the millennia (or longer) for the accumulation of magma into its eruptible state through to real-time observations of contemporary eruptive activity. A key aim of volcanology is to forecast the course of future events and provide advice on the timing and processes at ongoing eruptions on timescales that are relevant to humanity and with a degree of confidence about the processes involved. We invite contributions that address all the facets of this topic. These might include (1) magmatic forensics of past eruption products that contribute to accurate assessment of timescales and processes in past events; (2) studies of modern eruptions and the controls on their durations, including prolonged, multi-episode events; and (3) how temporal information about magmatic and volcanic processes can be translated into sound and useful advice to civil authorities for managing ongoing and future events.
Primary Convener:  Colin J N Wilson, Victoria University of Wellington, Wellington, New Zealand
Conveners:  Michelle L Coombs, Alaska Volcano Observatory Anchorage, USGS, Anchorage, AK, United States, Bruce F Houghton, University of Otago, Dunedin, New Zealand and Paul J Wallace, University of Oregon, Department of Earth Sciences, Eugene, United States
Chairs:  Colin J N Wilson, Victoria University of Wellington, Wellington, New Zealand and Michelle L Coombs, Alaska Volcano Observatory Fairbanks, Fairbanks, United States
OSPA Liaison:  Colin J N Wilson, Victoria University of Wellington, Wellington, New Zealand
Index Terms:

8419 Volcano monitoring [VOLCANOLOGY]
8434 Magma migration and fragmentation [VOLCANOLOGY]
8488 Volcanic hazards and risks [VOLCANOLOGY]
8499 General or miscellaneous [VOLCANOLOGY]

Abstracts Submitted to this Session:

Constraining timescales of pre-eruptive events within large silicic volcanic centers (Invited) (60960)
Allison E Rubin1,2, Kari M Cooper2, Adam JR Kent3, Fidel Costa Rodriguez4 and Christy B. Till5, (1)University of California Davis, Davis, CA, United States, (2)University of California Davis, Earth and Planetary Sciences, Davis, CA, United States, (3)Oregon State University, College of Earth, Ocean, & Atmospheric Sciences, Corvallis, OR, United States, (4)Nanyang Technological University, Singapore, Singapore, (5)Arizona State University, School of Earth & Space Exploration, Tempe, AZ, United States
Crustal-scale degassing and igneous mush re-organisation: a generic concept applied to episodic volcanism at the Soufrière Hills Volcano Montserrat (65973)
R Stephen J Sparks and Katharine V Cashman, University of Bristol, Bristol, United Kingdom
Priming Silicic Giant Magma Bodies: Finding Evidence for Internal Forcing Versus External Triggering of Supereruptions by Phase Equilibria Modeling. (76255)
Samantha Tramontano1, Guilherme A R Gualda1, Mark S Ghiorso2 and Ben Kennedy3, (1)Vanderbilt University, Earth and Environmental Sciences, Nashville, TN, United States, (2)OFM Research, Redmond, CA, United States, (3)University of Canterbury, School of Earth and Environment, Christchurch, New Zealand
The longevity of lava dome eruptions: analysis of the global DomeHaz database (59328)
Sarah E Ogburn1, Robert Wolpert2, Eliza Calder3, John S Pallister1 and Heather Michelle Nicholson Wright1, (1)USGS Cascades Volcano Observatory, Vancouver, WA, United States, (2)Duke University, Department of Statistical Science, Durham, NC, United States, (3)University of Edinburgh, School of GeoSciences, Edinburgh, United Kingdom
Quantitative Modeling of Volcanic SO2: Integrated Monitoring of Precursory Activity (82014)
Kevin A Reath, University of Pittsburgh Pittsburgh Campus, Department of Geology and Planetary Science, Pittsburgh, PA, United States, Matthew Watson, University of Bristol, Earth Sciences, Bristol, United Kingdom and Michael S Ramsey, University of Pittsburgh, Department of Geology and Environmental Science, Pittsburgh, PA, United States
Joint Inversions of Gas Emissions and Ground Deformation During and Following Volcanic Eruptions (Invited) (62670)
Marie Edmonds, University of Cambridge, Department of Earth Sciences, Cambridge, United Kingdom and Brendan T McCormick, University of Cambridge, Cambridge, United Kingdom

See more of: Volcanology, Geochemistry and Petrology