Effects of DEM resolution and source on hydrological modeling

Digital Elevation Model (DEM) has been widely used in hydrological model. The accuracy of hydrological model depends on the source and resolution of DEM data. This study investigated the effects of DEMs on deriving topographic and hydrological attributes. Two DEMs at four resolutions including 5m, 1...

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Main Authors: Hanuphab,T., Suwanprasit,C., Srichai,N.
Format: Conference or Workshop Item
Published: 2015
Online Access:http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84880015419&origin=inward
http://cmuir.cmu.ac.th/handle/6653943832/39157
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-391572015-06-16T08:14:44Z Effects of DEM resolution and source on hydrological modeling Hanuphab,T. Suwanprasit,C. Srichai,N. Digital Elevation Model (DEM) has been widely used in hydrological model. The accuracy of hydrological model depends on the source and resolution of DEM data. This study investigated the effects of DEMs on deriving topographic and hydrological attributes. Two DEMs at four resolutions including 5m, 10m, 20m, and 30m were prepared and tested for generating stream network and watershed area in Phuket Province, Thailand. Contour line interval 5 m and GDEM resolution 30 m were used in this study. Using higher resolution DEMs can derive more accurate stream network, but highest resolution data may not necessarily offer the best results, depending on the resolutions selected to compare the extracted networks. DEM resolution may have minor different impacts but the significantly different is DEM data source. 2015-06-16T08:14:44Z 2015-06-16T08:14:44Z 2012-12-01 Conference Paper 2-s2.0-84880015419 http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84880015419&origin=inward http://cmuir.cmu.ac.th/handle/6653943832/39157
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
description Digital Elevation Model (DEM) has been widely used in hydrological model. The accuracy of hydrological model depends on the source and resolution of DEM data. This study investigated the effects of DEMs on deriving topographic and hydrological attributes. Two DEMs at four resolutions including 5m, 10m, 20m, and 30m were prepared and tested for generating stream network and watershed area in Phuket Province, Thailand. Contour line interval 5 m and GDEM resolution 30 m were used in this study. Using higher resolution DEMs can derive more accurate stream network, but highest resolution data may not necessarily offer the best results, depending on the resolutions selected to compare the extracted networks. DEM resolution may have minor different impacts but the significantly different is DEM data source.
format Conference or Workshop Item
author Hanuphab,T.
Suwanprasit,C.
Srichai,N.
spellingShingle Hanuphab,T.
Suwanprasit,C.
Srichai,N.
Effects of DEM resolution and source on hydrological modeling
author_facet Hanuphab,T.
Suwanprasit,C.
Srichai,N.
author_sort Hanuphab,T.
title Effects of DEM resolution and source on hydrological modeling
title_short Effects of DEM resolution and source on hydrological modeling
title_full Effects of DEM resolution and source on hydrological modeling
title_fullStr Effects of DEM resolution and source on hydrological modeling
title_full_unstemmed Effects of DEM resolution and source on hydrological modeling
title_sort effects of dem resolution and source on hydrological modeling
publishDate 2015
url http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84880015419&origin=inward
http://cmuir.cmu.ac.th/handle/6653943832/39157
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