Paper
17 December 1999 Landsat Thematic Mapper and Geographic Information System for sediment delivery analysis under the two modes of runoff dispersion
Narayan B. Rajbhandari, Ahmed Fahsi, Tommy L. Coleman, George Brown, Teferi D. Tsegaye, Wubishet Tadesse, Phil Cannon
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Abstract
The purpose of this study was to assess the two modes of runoff dispersion in order to determine effective management practices to control the sediment delivery rate from a critical portion of the Flint River Watershed in Alabama, USA. The two modes of dispersion were natural storm flow and dispersed storm flow. A 1997 Landsat TM image of the watershed was classified to produce a land use map using a supervised classification technique. Based on the classification, a critical sub-watershed was selected for this study. Using a Geographic Information System (GIS), the storm flow directions under the two modes of dispersion were identified. The model, Areal Non-point Source Watershed Environment Response Simulator (ANSWERS), was then simulated for a one-year return period storm event to compare the sediment yield during the two modes of runoff dispersion. The sediment yield from the selected sub-watershed averaged a reduction of 20% during the dispersed mode.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Narayan B. Rajbhandari, Ahmed Fahsi, Tommy L. Coleman, George Brown, Teferi D. Tsegaye, Wubishet Tadesse, and Phil Cannon "Landsat Thematic Mapper and Geographic Information System for sediment delivery analysis under the two modes of runoff dispersion", Proc. SPIE 3868, Remote Sensing for Earth Science, Ocean, and Sea Ice Applications, (17 December 1999); https://doi.org/10.1117/12.373114
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KEYWORDS
Agriculture

Geographic information systems

Calibration

Earth observing sensors

Landsat

Soil science

Hydrology

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