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Mapping alluvial fans in Death Valley, California, using multichannel thermal infrared images
Author(s) -
Gillespie Alan R.,
Kahle Anne B.,
Palluconi Frank D.
Publication year - 1984
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl011i011p01153
Subject(s) - bedrock , geology , alluvium , alluvial fan , erosion , multispectral scanner , geomorphology , weathering , channel (broadcasting) , remote sensing , multispectral image , hydrology (agriculture) , geotechnical engineering , engineering , structural basin , electrical engineering
We have mapped alluvial fans in Death Valley, California using NASA's 8‐12 µm six‐channel airborne Thermal Infrared Multispectral Scanner (TIMS). We are able to recognize both composition and relative age differences. Age unit boundaries are generally consistent with those obtained by conventional mapping. Composition was verified by field investigation and comparison with existing geologic maps. Bedrock and its young derived fan gravels have similar emissivities. The original composition of the fans is modified by differential erosion and weathering, permitting relative age mapping with TIMS.