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...
Saved in:
Main Authors: | , , |
---|---|
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 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Chiang Mai University |
id |
th-cmuir.6653943832-39157 |
---|---|
record_format |
dspace |
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 |
_version_ |
1681421603647258624 |