DEM-based watershed topographic attributes extraction and analysis

Lifeng Yuan, Qigang Zhou, Qingfeng Zhang, WenWen Li, Weiguo Jiang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

This paper study topographic attributes extraction and analysis methods based on grid DEMs. We used mathematic statistics method and comparative analysis to analyze effect of DEMs with different resolutions on the outcome of topographic terrain extraction, including slope, topographic index (i.e. In (α/tanβ)), watershed area, and drainage network. The results show that effect of DEMs with different resolution on topographic attributes is different. Terrain is smoothed, the mean slope decreases, the mean value of ln(α/tanβ) distribution increases, the total area of watershed increases, the count of subwatersheds decrease, the total length of streams decrease, and the drainage density decreases as DEMs grid size increase.

Original languageEnglish (US)
Title of host publicationInternational Geoscience and Remote Sensing Symposium (IGARSS)
Pages911-913
Number of pages3
DOIs
StatePublished - 2006
Externally publishedYes
Event2006 IEEE International Geoscience and Remote Sensing Symposium, IGARSS - Denver, CO, United States
Duration: Jul 31 2006Aug 4 2006

Other

Other2006 IEEE International Geoscience and Remote Sensing Symposium, IGARSS
CountryUnited States
CityDenver, CO
Period7/31/068/4/06

Fingerprint

Watersheds
Drainage
digital elevation model
watershed
Statistics
drainage network
mathematics
drainage
analysis
attribute
method
effect

Keywords

  • DEM
  • Topographic attribution
  • Watershed delineation

ASJC Scopus subject areas

  • Geology
  • Software

Cite this

Yuan, L., Zhou, Q., Zhang, Q., Li, W., & Jiang, W. (2006). DEM-based watershed topographic attributes extraction and analysis. In International Geoscience and Remote Sensing Symposium (IGARSS) (pp. 911-913). [4241381] https://doi.org/10.1109/IGARSS.2006.234

DEM-based watershed topographic attributes extraction and analysis. / Yuan, Lifeng; Zhou, Qigang; Zhang, Qingfeng; Li, WenWen; Jiang, Weiguo.

International Geoscience and Remote Sensing Symposium (IGARSS). 2006. p. 911-913 4241381.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Yuan, L, Zhou, Q, Zhang, Q, Li, W & Jiang, W 2006, DEM-based watershed topographic attributes extraction and analysis. in International Geoscience and Remote Sensing Symposium (IGARSS)., 4241381, pp. 911-913, 2006 IEEE International Geoscience and Remote Sensing Symposium, IGARSS, Denver, CO, United States, 7/31/06. https://doi.org/10.1109/IGARSS.2006.234
Yuan L, Zhou Q, Zhang Q, Li W, Jiang W. DEM-based watershed topographic attributes extraction and analysis. In International Geoscience and Remote Sensing Symposium (IGARSS). 2006. p. 911-913. 4241381 https://doi.org/10.1109/IGARSS.2006.234
Yuan, Lifeng ; Zhou, Qigang ; Zhang, Qingfeng ; Li, WenWen ; Jiang, Weiguo. / DEM-based watershed topographic attributes extraction and analysis. International Geoscience and Remote Sensing Symposium (IGARSS). 2006. pp. 911-913
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