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Streamflow simulation using a physically based hydrologic model in humid forested watersheds.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Streamflow simulation using a physically based hydrologic model in humid forested watersheds./
作者:	Liaw, Shyue-Cherng.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 1998,
面頁冊數:	163 p.
附註:	Source: Dissertations Abstracts International, Volume: 60-02, Section: B.
Contained By:	Dissertations Abstracts International60-02B.
標題:	Hydrology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9835011
ISBN:	9780591884418

Streamflow simulation using a physically based hydrologic model in humid forested watersheds.
Liaw, Shyue-Cherng.

Streamflow simulation using a physically based hydrologic model in humid forested watersheds. - Ann Arbor : ProQuest Dissertations & Theses, 1998 - 163 p.

Source: Dissertations Abstracts International, Volume: 60-02, Section: B.

Thesis (Ph.D.)--Colorado State University, 1998.

This item must not be sold to any third party vendors.

The overall objective of this study was to test the response of the modified TOPMODEL under extremely steep topography and intense precipitation in humid forested watersheds in Taiwan. Two periods were chosen for the model calibration and validation. A typhoon season with 6 typhoon events in 1994 was selected to examine this model's response. In order to determine the effects of spatial variability on streamflow simulation, 5 grid sizes of DEM data, 10-, 20-, 30-, 40-, and 50-meter, and 2 flow direction algorithms, single and multiple, were used in this study. Results showed that this modified TOPMODEL is suitable for simulating streamflow in the Fu-Shan watersheds in Taiwan. Both model calibration and validation runs, on a daily basis, produced good fits, where model efficiencies were between 0.82 and 0.96. Even under intense rainfall on an hourly basis, model efficiencies varied from 0.61 to 0.96 for 6 individual typhoon events and 0.94 for the entire 1994 typhoon season. Although different grid sizes and flow direction algorithms generated various topographic index distributions, the simulated results were virtually identical when the model parameters were optimized. According to streamflow simulation with the modified TOPMODEL, subsurface flow accounted for 86.1% and 87.6% of the total simulated streamflow during the calibration and validation periods for the Fu-Shan No. 1 watershed (38 ha), and accounted for 85.1% and 86.6% for the Fu-Shan No.2 watershed (94 ha).

ISBN: 9780591884418Subjects--Topical Terms:

545716
Hydrology.
Subjects--Index Terms:

Taiwan

Streamflow simulation using a physically based hydrologic model in humid forested watersheds.
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300 $a 163 p.
500 $a Source: Dissertations Abstracts International, Volume: 60-02, Section: B.
500 $a Publisher info.: Dissertation/Thesis.
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506 $a This item must not be sold to any third party vendors.
506 $a This item must not be added to any third party search indexes.
520 $a The overall objective of this study was to test the response of the modified TOPMODEL under extremely steep topography and intense precipitation in humid forested watersheds in Taiwan. Two periods were chosen for the model calibration and validation. A typhoon season with 6 typhoon events in 1994 was selected to examine this model's response. In order to determine the effects of spatial variability on streamflow simulation, 5 grid sizes of DEM data, 10-, 20-, 30-, 40-, and 50-meter, and 2 flow direction algorithms, single and multiple, were used in this study. Results showed that this modified TOPMODEL is suitable for simulating streamflow in the Fu-Shan watersheds in Taiwan. Both model calibration and validation runs, on a daily basis, produced good fits, where model efficiencies were between 0.82 and 0.96. Even under intense rainfall on an hourly basis, model efficiencies varied from 0.61 to 0.96 for 6 individual typhoon events and 0.94 for the entire 1994 typhoon season. Although different grid sizes and flow direction algorithms generated various topographic index distributions, the simulated results were virtually identical when the model parameters were optimized. According to streamflow simulation with the modified TOPMODEL, subsurface flow accounted for 86.1% and 87.6% of the total simulated streamflow during the calibration and validation periods for the Fu-Shan No. 1 watershed (38 ha), and accounted for 85.1% and 86.6% for the Fu-Shan No.2 watershed (94 ha).
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