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A GIS expert system for the delineat...

Duke, Guy Dion.

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

Record Type:	Electronic resources : Monograph/item
Title/Author:	A GIS expert system for the delineation of watersheds in low-relief regions with rural infrastructure./
Author:	Duke, Guy Dion.
Description:	170 p.
Notes:	Source: Masters Abstracts International, Volume: 42-03, page: 0901.
Contained By:	Masters Abstracts International42-03.
Subject:	Physical Geography. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MQ83777
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:

893400
Physical Geography.

A GIS expert system for the delineation of watersheds in low-relief regions with rural infrastructure.
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100 1 $a Duke, Guy Dion. $3 1936284
245 1 2 $a A GIS expert system for the delineation of watersheds in low-relief regions with rural infrastructure.
300 $a 170 p.
500 $a Source: Masters Abstracts International, Volume: 42-03, page: 0901.
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.
590 $a School code: 1112.
650 4 $a Physical Geography. $3 893400
650 4 $a Geography. $3 524010
650 4 $a Artificial Intelligence. $3 769149
690 $a 0368
690 $a 0366
690 $a 0800
710 2 0 $a University of Lethbridge (Canada). $3 1021855
773 0 $t Masters Abstracts International $g 42-03.
790 1 0 $a Kienzle, Stefan W., $e advisor
790 $a 1112
791 $a M.Sc.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MQ83777