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Study of 6 August 2007 Crandall Canyon mine (Utah, USA) collapse from ALOS PALSAR InSAR

Zhong Lu(1) and Chuck Wicks(2)

(1) U.S. Geological Survey, EROS Center & Cascades Volcano Observatory, Vancouver, 98683, United States
(2) U.S. Geological Survey, Earthquake & Volcano Hazards Programs, Menlo Park, CA 94025, United States

Abstract

ALOS PALSAR interferometric synthetic aperture radar (InSAR) images were used to map land surface deformation over the Crandall Canyon mine in Utah that collapsed on 6 August 2007 and killed 6 miners and 3 rescuers. The collapse was accompanied by a local magnitude 3.9 earthquake. An InSAR image that spans the collapse shows about 20-25 cm subsidence over the Crandall Canyon mine. Numerical modeling is conducted to understand the nature of the observed deformation, which will be compared to observations from the seismic wave-form modeling and the first motion analysis of seismic wave arrival.

 

Symposium presentation

 

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