Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1061/(ASCE)HE.1943-5584.0000603 |
Copula-Based Pooled Frequency Analysis of Droughts in the Canadian Prairies | |
Sadri, Sara; Burn, Donald H. | |
通讯作者 | Sadri, Sara |
来源期刊 | JOURNAL OF HYDROLOGIC ENGINEERING |
ISSN | 1084-0699 |
EISSN | 1943-5584 |
出版年 | 2014 |
卷号 | 19期号:2页码:277-289 |
英文摘要 | This paper studies the frequency analysis of droughts using a copula with the application of regionalization in the context of a bivariate homogeneity analysis. Drought events indicated by severity and duration were extracted from monthly flow averages. A K-means clustering algorithm was used to form initial regions. A fuzzy C-means algorithm was used to form the final groups of sites that meet the criteria of bivariate discordancy, bivariate homogeneity, and size. The application of the Gumbel, Clayton, and Frank copulas for bivariate drought frequency analysis was studied. Results show the importance of a clear definition of drought in every scenario since, in our example, the longest drought does not necessarily correspond to the most severe one. Another important observation of this study was that, given the average annual rainfall of a catchment, droughts seem to occur in almost all regions, humid or arid. However, areas with higher annual rainfall can experience shorter but more severe drought. The procedures of this study are applicable for flood frequency analysis as well. Furthermore, ungauged sites can be integrated in the procedure of regionalization. |
英文关键词 | Regionalization Regional drought frequency analysis Fuzzy C-means algorithm Drought Bivariate discordancy Bivariate homogeneity L-comoments |
类型 | Article |
语种 | 英语 |
国家 | Canada |
收录类别 | SCI-E |
WOS记录号 | WOS:000335149700001 |
WOS关键词 | CANONICAL CORRELATION-ANALYSIS ; SPATIAL CHARACTERIZATION ; HYDROLOGICAL DROUGHTS ; ARCHIMEDEAN COPULAS ; RECURRENCE ANALYSIS ; SEVERITY ; DURATION ; SYSTEM ; REGION ; BASIN |
WOS类目 | Engineering, Civil ; Environmental Sciences ; Water Resources |
WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Water Resources |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/183405 |
作者单位 | Univ Waterloo, Dept Civil & Environm Engn, Waterloo, ON N2L 3G1, Canada |
推荐引用方式 GB/T 7714 | Sadri, Sara,Burn, Donald H.. Copula-Based Pooled Frequency Analysis of Droughts in the Canadian Prairies[J],2014,19(2):277-289. |
APA | Sadri, Sara,&Burn, Donald H..(2014).Copula-Based Pooled Frequency Analysis of Droughts in the Canadian Prairies.JOURNAL OF HYDROLOGIC ENGINEERING,19(2),277-289. |
MLA | Sadri, Sara,et al."Copula-Based Pooled Frequency Analysis of Droughts in the Canadian Prairies".JOURNAL OF HYDROLOGIC ENGINEERING 19.2(2014):277-289. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Sadri, Sara]的文章 |
[Burn, Donald H.]的文章 |
百度学术 |
百度学术中相似的文章 |
[Sadri, Sara]的文章 |
[Burn, Donald H.]的文章 |
必应学术 |
必应学术中相似的文章 |
[Sadri, Sara]的文章 |
[Burn, Donald H.]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。