English
|
正體中文
| 简体中文 |
全文笔数/总笔数 : 62822/95882 (66%)
造访人次 : 4016780 在线人数 : 563
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by
NTU Library & TKU Library IR team.
搜寻范围
全部機構典藏
工學院
水資源及環境工程學系暨研究所
--期刊論文
查询小技巧:
您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
进阶搜寻
主页
‧
登入
‧
上传
‧
说明
‧
关于機構典藏
‧
管理
淡江大學機構典藏
>
工學院
>
水資源及環境工程學系暨研究所
>
期刊論文
>
Item 987654321/44595
数据加载中.....
书目数据导出
Endnote RIS 格式
Bibtex 格式
引文信息
jsp.display-item.identifier=請使用永久網址來引用或連結此文件:
https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/44595
题名:
A dynamic corridor-searching algorithm to seek time-varying instream flow releases for optimal weir operation : Comparing three indices of overall hydrologic alteration
作者:
Shiau, Jenq-tzong
;
Wu, Fu-chun
贡献者:
淡江大學水資源及環境工程學系
关键词:
instream flow
;
dynamic corridor-searching algorithm
;
indicators of hydrologic alteration (IHA)
;
range of variability approach (RVA)
;
compromise programming (CP)
日期:
2007-01
上传时间:
2010-03-26 16:28:34 (UTC+8)
出版者:
Chichester: John Wiley & Sons Ltd.
摘要:
A full range of natural flow regime has been widely recognized as a primary driving force for sustaining the integrity of a riverine ecosystem. Existing instream flow methods strive to assure a constant minimum flow but not the natural flow variability. We present in this paper a dynamic corridor-searching algorithm to seek the optimal time-varying scheme for instream flow releases. A compromise programming (CP) is employed to search the optimal solution of an objective function aggregating the ecosystem and human needs objectives. The ecosystem need objective is represented by an overall index of hydrologic alteration, which integrates 32 indicators of hydrologic alteration (IHA) derived from the range of variability approach (RVA). The human need objectives are expressed by shortage ratios for the agricultural and municipal water supplies. The proposed method is applied to a weir operation in Taiwan. Three approaches to evaluating the overall degree of hydrologic alteration (i.e., the three-class, fuzzy-based, and overall-mean approaches) are compared here. The results show that the time-varying schemes improve the human need objective, but only slightly deteriorate the ecosystem need objective. Such advantages increase with the time-varying frequency. For the wet periods, smaller flow releases may be prescribed; for the dry periods, however, greater releases must be specified to secure a lower degree of overall hydrologic alteration. It is also revealed that use of the three-class approach to evaluate the overall hydrologic alteration facilitates to eliminate highly altered IHA and maintain those low-flow characteristics subtle to flow diversions. However, such outcomes are achieved at the cost of greater deficits for human water demands. Copyright © 2007 John Wiley & Sons, Ltd.
關聯:
River Research and Applications 23(1), pp.35-53
DOI:
10.1002/rra.962
显示于类别:
[水資源及環境工程學系暨研究所] 期刊論文
文件中的档案:
档案
描述
大小
格式
浏览次数
A dynamic corridor-searching algorithm to seek time-varying instream flow releases for optimal weir operation Comparing three indices of overall hydrologic alteration.pdf
509Kb
Adobe PDF
1
检视/开启
index.html
0Kb
HTML
27
检视/开启
在機構典藏中所有的数据项都受到原著作权保护.
TAIR相关文章
DSpace Software
Copyright © 2002-2004
MIT
&
Hewlett-Packard
/
Enhanced by
NTU Library & TKU Library IR teams.
Copyright ©
-
回馈