HR: 0800h
AN: T51A-0303    [Abstracts]
TI: Remote sensing investigation into the correlation between landslides caused by the 2002 November 3rd, 7.9M Denali Fault earthquake and a surge of the SE fork of McGinnis Peak Glacier.
AU: * Benowitz, J
EM: ftjab@uaf.edu
AF: Dept of Geology and Geophysics University of Alaska, PO 755780, Fairbanks, AK 99775, United States
AB: The 2002 November 3rd, 7.9 M Denali Fault caused a large landslide that deposited 11.4 x 106m3 feet of rock and ice onto the SE fork of McGinnis Peak Glacier. The landslide left a large mass on the upper ice reservoir of the glacier and blocked the terminus outlet of the glacier with debris. Satellite images and historic photos were used to examine the terminus history of the glacier. Further landslides/mass wasting events during the spring of 2003, documented via Land Sat 7 images, covered the same upper ice reservoir as the 2002 landslides. Between 2004 and 2006 the SE fork Glacier of McGinnis Peak experienced a dramatic surge. There is no known history of such dramatic surge occurrences on the glacier of interest. Though causation is difficult to prove preliminary evidence points towards the implication that the landslides generated by the 2002 earthquake most likely either caused or contributed to the documented glacial surge. Examination of more satellite images is planned to further examine McGinnis Peak's glacier history and to refine the timing of the possible correlation between the earthquake generated landslides and the dramatic surge of the SE glacial fork of McGinnis Peak
DE: 0720 Glaciers
DE: 0758 Remote sensing
DE: 0790 Weathering (1625, 1886)
DE: 8123 Dynamics: seismotectonics
DE: 8175 Tectonics and landscape evolution
SC: Tectonophysics [T]
MN: 2007 Fall Meeting