IUGG 2015. Collapse Caldera Session (VS04)
26th IUGG General Assembly
Dear colleagues ,
We would like to draw your attention on the Collapse Caldera Session (VS04) at the next IUGG 2015 Meeting (http://www.iugg2015prague.com) to be held in Prague (June 22 – July 25, 2015). Below you may find the description of the session.
Convener: Adelina Geyer Traver (Barcelona, Spain)
Co-conveners: Nobuo Geshi (Ibaraki, Japan), Caroline Bouvet De Maisonneuve (Singapore), Olivier Bachmann (Zurich, Switzerland)
Description
Collapse calderas have long been a major subject of interest for volcanologists and other geoscientists because they are the most catastrophic volcanic events that have occurred on Earth. In addition, caldera reactivation in the shape of unrest creates important dilemmas for hazard assessment, as not all periods of unrest lead to an eruption and not all eruptions are caldera-forming. Thus, understanding the magmatic processes occurring beneath silicic calderas and the thermodynamic and mechanic conditions of magma and host rock required to generate collapse calderas remain a major goal in Volcanology. This session will address the principal processes accompanying the development of calderas, including their regional tectonic and magmatic context and the requirements for their formation and evolution. We will also address the conditions leading to the complex pattern of caldera unrest, potential for evolution into an eruption, and the role of calderas as sources of geothermal energy and metallic ore deposits. In this session, we invite contributions from field studies, petrology, geochemistry, geophysics, volcano monitoring and modelling (analogue or numerical) on the details of a caldera cycle. What are the long-term or short-term precursors of a caldera-forming eruption? When is the transition from resurgent to precursory activity and how does it occur? What controls the length of recurrence intervals? When do magmatic vs. non magmatic (e.g. hydrothermal) processes dominate the system?
Volcano Listserv is a collaborative venture among Arizona State University (ASU), Portland State University (PSU), the Global Volcanism Program (GVP) of the Smithsonian Institution's National Museum of Natural History, and the International Association for Volcanology and Chemistry of the Earth's Interior (IAVCEI).
ASU - http://www.asu.edu/ PSU - http://pdx.edu/ GVP - http://www.volcano.si.edu/ IAVCEI - http://www.iavcei.org/
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