Science Service System

Summary of Proposal GEO1514

TitleStudying pre-eruptivevolcanic processes with TerraSAR-X InSAR
Investigator Amelung, Falk - University of Miami, Division of Marine Geology and Geophysics
Team MemberNo team members defined
SummaryEruptions of volcanoes are preceded by the ascent of magma from depth to the shallow volcanic system. The arrival of new magma leads to pressurization of reservoirs and inflation of the volcanic edifice. Precise space-geodetic techniques such as TerraSAR-X InSAR can detect this ground deformation. Spaceborne InSAR could be a tool for volcano monitoring aiming at detecting precursory inflation prior to eruption. The difficulty for eruption warning using geodetic methods is that pre-eruption data collected to date are inconclusive. There are many eruptions without precursory inflation and many inflation periods without subsequent eruptions.The processes leading to eruptions are poorly understood. We propose to exploit the TerraSAR-X archive to better understand pre-eruptive processes. Our targets include Merapi,Indonesia, Colima and Popocatepetl in Mexico, Soufriere Hills, Montserrat and Galeras, Columbia, all of which had significant eruptions during 2008-2012 and usable TerraSAR-X data stacks.We will use Small Baseline methods to develop time-dependent deformation data and identify eruptions lacking precursory deformation to investigate possible eruption triggers. This project is an effort to improve predictive models for forecast and warning of explosive volcanic eruptions. We request a quota of 150 scenes.

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DLR 2004-2016