干旱区生态环境知识资源中心(Arid): Homogeneity analysis of streamflow records in arid and semi-arid regions of northwestern Iran

Arid

	Homogeneity analysis of streamflow records in arid and semi-arid regions of northwestern Iran
	Kazemzadeh Majid; Malekian Arash
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2018
卷号	10 期号:4 页码:493-506
英文摘要	Homogeneity analysis of the streamflow time series is essential to hydrological modeling,water resources management and climate change studies.In this study,five absolute homogeneity tests and one clustering approach were used to determine the homogeneity status of the streamflow time series(over the period 1960-2010) in 14 hydrometric stations of three important basins(i.e.,Aras River Basin,Urmia Lake Basin and Sefid-Roud Basin) in northwestern Iran.Results of the Buishand range test,von Neumann ratio test,cumulative deviation test,standard normal homogeneity test and Pettitt test for monthly streamflow time series detected that about 42.26%,38.09%,33.33%,39.28% and 68.45% of the streamflow time series were inhomogeneous at the 0.01 significance level,respectively.Streamflow time series of the stations located in the eastern parts of the study area or within the Urmia Lake Basin were mostly homogeneous.In contrast,streamflow time series in the stations of the Aras River Basin and Sefied-Roud Basin showed inhomogeneity at annual scales.Based on the overall classification for the monthly and annual streamflow series,we determined that about 45.60%,11.53% and 42.85% of the time series were categorized into the 'useful','doubtful' and 'suspect' classes according to the five absolute homogeneity tests.We also found the homogeneity patterns of the streamflow time series by using the clustering approach.The results suggested the effectiveness of the clustering approach for homogeneity analysis of the streamflow time series in addition to the absolute homogeneity tests.Moreover,results of the absolute homogeneity tests and clustering approach indicated obvious decreasing change points of the streamflow time series in the 1990s over the three basins,which were mostly related to the hydrological droughts.
英文关键词	streamflow time series homogeneity test clustering analysis inhomogeneity Urmia Lake northwestern Iran
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:6283193
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335974
作者单位	Kazemzadeh Majid, University of Tehran, Karaj, 31587-77871, Iran.; Malekian Arash, University of Tehran, Karaj, 31587-77871, Iran.
推荐引用方式 GB/T 7714	Kazemzadeh Majid,Malekian Arash. Homogeneity analysis of streamflow records in arid and semi-arid regions of northwestern Iran[J],2018,10(4):493-506.
APA	Kazemzadeh Majid,&Malekian Arash.(2018).Homogeneity analysis of streamflow records in arid and semi-arid regions of northwestern Iran.Journal of Arid Land,10(4),493-506.
MLA	Kazemzadeh Majid,et al."Homogeneity analysis of streamflow records in arid and semi-arid regions of northwestern Iran".Journal of Arid Land 10.4(2018):493-506.