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Northeastern Section - 44th Annual Meeting (22–24 March 2009)

Paper No. 8
Presentation Time: 8:00 AM-12:00 PM

HIMALAYAN TOPOGRAPHY: A LABORATORY FOR STUDYING THE INTERACTION OF TECTONICS AND EROSION


WALSH, Lisa S., Geology, The University of Maryland at College Park, The University of Maryland, College Park, MD 20742, MARTIN, Aaron J., Department of Geology, University of Maryland, College Park, MD 20742, OJHA, Tank P., Department of Geosciences, University of Arizona, Tucson, AZ 85721 and FEDENCZUK, Tom, School of Ocean and Earth Science Technology, The Univeristy of Hawai'i at Manoa, Honolulu, HI 96822, lsschlei@umd.edu

Spurred by the recognition that lithologic resistivity to erosion influences the steepness of terrain, the purpose of this study is to enhance our understanding of erosion and tectonic responses in the Himalaya. Using spatial statistics, within a Geographic Information Systems (GIS) framework, this study extracts steepness and curvature values from the terrain to identify the unique spatial signature of lithologic units in the Annapurna Range. High resolution digital elevation models, derived from a variety of interpolation methods, allow the spatial relationship of faults and statistically significant physiographic changes to be examined. Through these quantifications, we explore the possibility of a new model for tectonic activity near the Main Central Thrust, and improve our understanding of how surface processes sculpt the landscape.

Session No. 32--Booth# 31

T3. GIS Applications in Geoscience Teaching, Research and Map Production (Posters)
Monday, 23 March 2009: 8:00 AM-12:00 PM
Geological Society of America Abstracts with Programs. Vol. 41, No. 3, p.77
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