DEM-based watershed topographic attributes extraction and analysis

Lifeng Yuan; Qigang Zhou; Qingfeng Zhang; Wenwen Li; Weiguo Jiang

doi:10.1109/IGARSS.2006.234

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 proceeding › Conference contribution

2 Scopus citations

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 language	English (US)
Title of host publication	2006 IEEE International Geoscience and Remote Sensing Symposium, IGARSS
Pages	911-913
Number of pages	3
DOIs	https://doi.org/10.1109/IGARSS.2006.234
State	Published - 2006
Externally published	Yes
Event	2006 IEEE International Geoscience and Remote Sensing Symposium, IGARSS - Denver, CO, United States Duration: Jul 31 2006 → Aug 4 2006

Publication series

Name	International Geoscience and Remote Sensing Symposium (IGARSS)

Other

Other	2006 IEEE International Geoscience and Remote Sensing Symposium, IGARSS
Country/Territory	United States
City	Denver, CO
Period	7/31/06 → 8/4/06

Keywords

DEM
Topographic attribution
Watershed delineation

ASJC Scopus subject areas

Computer Science Applications
Earth and Planetary Sciences(all)

Access to Document

10.1109/IGARSS.2006.234

Cite this

DEM-based watershed topographic attributes extraction and analysis. / Yuan, Lifeng; Zhou, Qigang; Zhang, Qingfeng et al.
2006 IEEE International Geoscience and Remote Sensing Symposium, IGARSS. 2006. p. 911-913 4241381 (International Geoscience and Remote Sensing Symposium (IGARSS)).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Yuan, L, Zhou, Q, Zhang, Q, Li, W & Jiang, W 2006, DEM-based watershed topographic attributes extraction and analysis. in 2006 IEEE International Geoscience and Remote Sensing Symposium, IGARSS., 4241381, International Geoscience and Remote Sensing Symposium (IGARSS), 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

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title = "DEM-based watershed topographic attributes extraction and analysis",

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.",

keywords = "DEM, Topographic attribution, Watershed delineation",

author = "Lifeng Yuan and Qigang Zhou and Qingfeng Zhang and Wenwen Li and Weiguo Jiang",

year = "2006",

doi = "10.1109/IGARSS.2006.234",

language = "English (US)",

isbn = "0780395107",

series = "International Geoscience and Remote Sensing Symposium (IGARSS)",

pages = "911--913",

booktitle = "2006 IEEE International Geoscience and Remote Sensing Symposium, IGARSS",

note = "2006 IEEE International Geoscience and Remote Sensing Symposium, IGARSS ; Conference date: 31-07-2006 Through 04-08-2006",

}

TY - GEN

T1 - DEM-based watershed topographic attributes extraction and analysis

AU - Yuan, Lifeng

AU - Zhou, Qigang

AU - Zhang, Qingfeng

AU - Li, Wenwen

AU - Jiang, Weiguo

PY - 2006

Y1 - 2006

N2 - 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.

AB - 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.

KW - DEM

KW - Topographic attribution

KW - Watershed delineation

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M3 - Conference contribution

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T3 - International Geoscience and Remote Sensing Symposium (IGARSS)

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BT - 2006 IEEE International Geoscience and Remote Sensing Symposium, IGARSS

T2 - 2006 IEEE International Geoscience and Remote Sensing Symposium, IGARSS

Y2 - 31 July 2006 through 4 August 2006

ER -

DEM-based watershed topographic attributes extraction and analysis

Abstract

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Keywords

ASJC Scopus subject areas

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