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A GIS expert system for the delineat...

Duke, Guy Dion.

A GIS expert system for the delineation of watersheds in low-relief regions with rural infrastructure.

紀錄類型:	書目-電子資源 : 單行本
正題名/作者:	A GIS expert system for the delineation of watersheds in low-relief regions with rural infrastructure./
作者:	Duke, Guy Dion.
面頁冊數:	170 p.
附註:	Source: Masters Abstracts International, Volume: 42-03, page: 0901.
Contained By:	Masters Abstracts International42-03.
標題:	Physical Geography. -
電子資源:	Download fulltext (下載全文)
ISBN:	0612837777

A GIS expert system for the delineation of watersheds in low-relief regions with rural infrastructure.
Duke, Guy Dion.

A GIS expert system for the delineation of watersheds in low-relief regions with rural infrastructure. - 170 p.

Source: Masters Abstracts International, Volume: 42-03, page: 0901.

Thesis (M.Sc.)--University of Lethbridge (Canada), 2003.

Grid-based digital elevation models (DEMs) are used to simulate overland flow paths in hydrological models. The accuracy of these drainage patterns are dependent upon how well the DEM represents the terrain features that control runoff patterns. Often regional DEMs are not produced at scales small enough to represent rural infrastructure. The scale of runoff patterns that can be accurately modeled is, therefore, restricted, particularly when the terrain is relatively flat.

ISBN: 0612837777Subjects--Topical Terms:

1000005691
Physical Geography.

A GIS expert system for the delineation of watersheds in low-relief regions with rural infrastructure.
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245 1 2 $a A GIS expert system for the delineation of watersheds in low-relief regions with rural infrastructure.
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500 $a Adviser: Stefan W. Kienzle.
502 $a Thesis (M.Sc.)--University of Lethbridge (Canada), 2003.
520 $a Grid-based digital elevation models (DEMs) are used to simulate overland flow paths in hydrological models. The accuracy of these drainage patterns are dependent upon how well the DEM represents the terrain features that control runoff patterns. Often regional DEMs are not produced at scales small enough to represent rural infrastructure. The scale of runoff patterns that can be accurately modeled is, therefore, restricted, particularly when the terrain is relatively flat.
520 $a The RIDEM (Rural Infrastructure Digital Elevation Model) model is presented that utilizes commonly available ancillary data to downscale grid-based runoff patterns. The resulting drainage patterns reflect drainage modifications imposed by rural infrastructure including: roads, ditches, culverts, and irrigation canals. Downscaling runoff patterns enables the completion of runoff studies at smaller scales. The model was implemented within the Oldman River watershed, Alberta, Canada to determine the spatial patterns of potential runoff contributing areas in three agricultural watersheds regularly contaminated by pathogens.
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