Monitoring salt playa dynamics using Thematic Mapper data

Various image analysis techniques have been applied to multitemporal Landsat Thematic Mapper data collected over a four-year period. The results have been used to monitor sediment transport processes in semi-arid south central Tunisia. Process-domains on salt playas in the study area have been ident...

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Bibliographic Details
Published in:IEEE transactions on geoscience and remote sensing 1989-11, Vol.27 (6), p.754-761
Main Authors: Millington, A.C., Drake, N.A., Townshend, J.R.G., Quarmby, N.A., Settle, J.J., Reading, A.J.
Format: Article
Language:English
Subjects:
Councils
Electrical capacitance tomography
eolian transport
geographical distribution
Image analysis
mapping
Marine
Moisture
NASA
playas
Reflectivity
Remote monitoring
Remote sensing
Satellites
sediment transport
Sediments
Thematic Mapper
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Summary:Various image analysis techniques have been applied to multitemporal Landsat Thematic Mapper data collected over a four-year period. The results have been used to monitor sediment transport processes in semi-arid south central Tunisia. Process-domains on salt playas in the study area have been identified and mapped. Seasonal, interseasonal, and spatial changes on these playas have been related to sediment, salt, and moisture regimes. Surface water and groundwater activity, and eolian processes, are identified as important sediment, transport processes. The observations bring into question the traditional groundwater-based model of salt playa geochemistry; a revised set of integrated geochemical/geomorphological models is invoked.< >
ISSN:0196-2892
1558-0644
DOI:10.1109/36.35964