V43E:
Understanding Basaltic Explosive Eruptions: Evidence from the Field, the Lab, and Modeling I
Session ID#: 8327
Session Description:
Basaltic explosive volcanism takes place over a range of time and length scales from Strombolian or Hawaiian explosions (~103-105 kg s-1) to sustained subplinian and rare Plinian eruptions, of intensity 105-108 kg s-1. Basaltic explosive eruptions involve intrinsically fast processes and dynamic fluctuations of eruption rate and fountain/plume height on second and sub-second scales. Shallow-level release (‘degassing’) and escape (‘outgassing’) of dissolved gas from mechanically and dynamically variable magma, and the mingling of these magmas during shallow storage and ascent drives much of the eruptive diversity and modulates the abrupt changes of eruption dynamics seen at basaltic explosive volcanoes. Understanding those processes of conduit flow, degassing/outgassing and fragmentation that govern basaltic explosions is the aim of this session. We are interested in presentations that use some combination of field measurements, analog experiments, laboratory-determined rate-meters and numerical models to address the topic.
Primary Convener: Bruce F Houghton, University of Hawaii at Manoa, Geology & Geophysics, Honolulu, HI, United States
Conveners: Marie Edmonds, University of Cambridge, Department of Earth Sciences, Cambridge, United Kingdom and Jacopo Taddeucci, Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Roma 1, Roma, Italy
Chairs: Marie Edmonds, University of Cambridge, Department of Earth Sciences, Cambridge, United Kingdom and Jacopo Taddeucci, National Institute of Geophysics and Volcanology, Sezione di Roma 1, Rome, Italy
OSPA Liaison: Bruce F Houghton, University of Otago, Dunedin, New Zealand
Abstracts Submitted to this Session:
Edward W Llewellin1, Elisabetta Del Bello2, Simon Mathias1, Stephen J Lane3, Mike R James4, Jacopo Taddeucci2, Antonio Capponi5 and Piergiorgio Scarlato6, (1)Durham University, Earth Sciences, Durham, United Kingdom, (2)National Institute of Geophysics and Volcanology, Sezione di Roma 1, Rome, Italy, (3)Lancaster University, Lancaster, United Kingdom, (4)University of Lancaster, Lancaster Environment Centre, Lancaster, United Kingdom, (5)Ludwig-Maximilians Universität München, Department of Earth and Environmental Sciences, Munich, Germany, (6)National Institute of Geophysics and Volcanology, Rome, Italy
Damien Gaudin1, Jacopo Taddeucci2, Piergiorgio Scarlato1, Andrew John Lang Harris3, Maxime Bombrun3, Elisabetta Del Bello1 and Tim R Orr4, (1)INGV National Institute of Geophysics and Volcanology, Rome, Italy, (2)Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Roma 1, Roma, Italy, (3)Laboratoire Magmas et Volcans, Université Blaise Pascal, CNRS UMR 6524, IRD R 163, Clermont-Ferrand Cedex, France, (4)Hawaiian Volcano Observatory, USGS, Hawaii National Park, HI, United States
Antonio Capponi, Ludwig-Maximilians Universität München, Department of Earth and Environmental Sciences, Munich, Germany; Lancaster University, Lancaster, United Kingdom, Jacopo Taddeucci, National Institute of Geophysics and Volcanology, Sezione di Roma 1, Rome, Italy, Piergiorgio Scarlato, National Institute of Geophysics and Volcanology, Rome, Italy and Danilo Mauro Palladino, Sapienza University of Rome, Rome, Italy
Atsuko Namiki and Yukie Tanaka, Hiroshima University, Higashi-Hiroshima, Japan
Matthew R Patrick, Hawaiian Volcano Observatory, USGS, Hawaii National Park, HI, United States, Tim R Orr, U.S. Geological Survey, Alaska Volcano Observatory, Anchorage, AK, United States, Donald A Swanson, Hawaiian Volcano Observatory, Hawaii National Park, HI, United States and Einat Lev, Columbia University of New York, Palisades, NY, United States
Bruce F Houghton1, Tim R Orr2, Jacopo Taddeucci3, Rebecca Carey4, Elisabetta Del Bello3, Piergiorgio Scarlato5 and Matthew R Patrick6, (1)University of Hawaii at Manoa, Geology & Geophysics, Honolulu, HI, United States, (2)U.S. Geological Survey, Alaska Volcano Observatory, Anchorage, AK, United States, (3)National Institute of Geophysics and Volcanology, Sezione di Roma 1, Rome, Italy, (4)University of Tasmania, School of Natural Sciences, Hobart, TAS, Australia, (5)National Institute of Geophysics and Volcanology, Rome, Italy, (6)Hawaiian Volcano Observatory, USGS, Hilo, HI, United States
Marie Edmonds1, Nahum Clements2, Bruce F Houghton3, Clive Oppenheimer4, Roderic L Jones2 and Michael Richard Burton5, (1)University of Cambridge, Department of Earth Sciences, Cambridge, United Kingdom, (2)University of Cambridge, Cambridge, United Kingdom, (3)University of Hawaii at Manoa, Geology & Geophysics, Honolulu, HI, United States, (4)Department of Geography, University of Cambridge, Cambridge, United Kingdom, (5)University of Manchester, Manchester, M13, United Kingdom
Pranabendu Moitra, University of Arizona, Tucson, AZ, United States, Helge Martin Gonnermann, Rice University, Houston, TX, United States, Bruce F Houghton, University of Hawaii at Manoa, Geology & Geophysics, Honolulu, HI, United States and Josh A Crozier, USGS CalVo, Menlo Park, United States
