Science Service System

Summary of Proposal GEO2493

TitleUsing TerraSAR-X Staring Spotlight mode data to conduct a very high resolution study of multiple phenomena within the crater of Mount St. Helens
Investigator Wicks, Charles - U. S. Geological Survey, Earthquake and Volcano Science Centers
Team Members
Project Manager Crosby, Christopher - UNAVCO, Geodetic Imaging and OpenTopography
SummaryThe crater of Mount St. Helens volcano is a horseshoe shaped area about 2 km x 3.5 km in dimension. The crater contains multiple deformation targets in the form of subsiding domes (from both the 1980 and 2004-2008 eruptions), small mobile glaciers, crater wall instability and movement from ground water changes. The crater fits inside the footprint of the potential Staring Spotlight mode acquisitions. We plan to use the very high resolution of the Staring Spotlight mode and the short revisit times to conduct a detailed study of possible deformation processes at work within the crater. The study depends on both very high resolution Staring Spotlight interferograms and very high resolution Starting Spotlight SAR image pixel tracking. We are also testing new fast DEM generating capability using stereo aerial photographs. This ability would have proven valuable before the catastrophic 1980 eruption to measure the fast growing tumescence that preceded the eruption and during the 2004-2008 eruption to measure the volumes of extruding spines within the crater. We plan to use the very high resolution offered by the Staring Spotlight mode data to evaluate the accuracy and usefulness of the generated DEMs.

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DLR 2004-2016