DocumentCode :
786465
Title :
Simulated Aster data for geologic studies
Author :
Abrams, Michael ; Hook, Simon J.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Volume :
33
Issue :
3
fYear :
1995
fDate :
5/1/1995 12:00:00 AM
Firstpage :
692
Lastpage :
699
Abstract :
The Advanced Spaceborne Thermal Emission and Reflectance Radiometer (ASTER) is a high spatial resolution imaging instrument, scheduled to be launched on NASA´s Earth Observing System AM-1 satellite platform in 1988, ASTER acquires data in 14 bands, spanning the visible, near-infrared, short-wavelength infrared, and thermal infrared spectral regions, with spatial resolution varying from 15-90 m, depending on wavelength. In order to evaluate the authors ability to use ASTER data for geological mapping, they created a simulated 14-band ASTER data set for Cuprite, Nevada. The study site has sparse vegetation and exposes a wide range of unaltered and hydrothermally altered volcanic rocks. The wide range of wavelengths covered by ASTER allowed them to distinguish iron oxide minerals, clay-bearing minerals, sulfate minerals, ammonia minerals, siliceous rocks, and carbonates. Based on interpretation of the ASTER data, and in conjunction with laboratory and field spectral measurements, they produced an alteration map showing the distribution of argillized rocks, opalized rocks with alunite, silicified rocks, and areas dominated by kaolinite and buddingtonite. The map was as accurate as published maps made by traditional field methods. ASTER should be an improvement over existing satellite systems for geologic mapping
Keywords :
geophysical techniques; infrared imaging; remote sensing; ASTER; Advanced Spaceborne Thermal Emission and Reflectance Radiometer; Aster; Cuprite; IR imaging; IR method; Nevada; geological mapping; geology; geophysical measurement technique; infrared spectra; remote sensing; thermal infrared spectra; visible; Geology; High-resolution imaging; Infrared imaging; Infrared spectra; Minerals; Optical imaging; Radiometry; Reflectivity; Satellite broadcasting; Spatial resolution;
fLanguage :
English
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
Publisher :
ieee
ISSN :
0196-2892
Type :
jour
DOI :
10.1109/36.387584
Filename :
387584
Link To Document :
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