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Summary of Proposal GEO2099

TitleEstimating the geometry time evolution of the rhyolite magma reservoir associated with the 2011-2012 eruption in the Puyehue-Cordón Caulle volcanic complex
Investigator Wicks, Charles - U. S. Geological Survey, Earthquake and Volcano Science Centers
Team MemberNo team members defined
SummaryAfter the 2008 eruption of Chaitén volcano (Chile) the second rhyolite eruption during the GPS-InSAR era began in June, 2011 in the Puyehue-Cordón Caulle volcanic complex in Chile. These are the only two rhyolite eruptions in history that have had any geodetic measurements available. Although measurements provided by Envisat are good, the deformation field and the time evolution of the field would be much more complete if TSX data were included. The objective of this study is to provide the best possible model of the rhyolite reservoir involved in the 2011 eruption, and to develop the best possible history of time evolution of the reservoir during the early voluminous phases of the eruption. This will be done by modeling the measured pre-eruption deformation field measured using ALOS and Envisat data and the co-eruption field using Envisat and TSX data. Archived TSX stripmap data would be used. We will publish a journal article in 2014 showing the results. Funding to buy the data and conduct the research are provided by the Volcano Hazard Program at the U. S. Geological Survey.

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