干旱区生态环境知识资源中心(Arid): Characteristics of climate and melt runoff in the Koxkar Glacier River Basin, south slope of the Tianshan Mountains, Northwest China

Arid

DOI	10.3724/SP.J.1226.2019.00435
	Characteristics of climate and melt runoff in the Koxkar Glacier River Basin, south slope of the Tianshan Mountains, Northwest China
	Xu, Min; Han, HaiDong; Kang, ShiChang; Tao, Hua
通讯作者	Xu, M ; Han, HD
来源期刊	SCIENCES IN COLD AND ARID REGIONS
ISSN	1674-3822
出版年	2019
卷号	11 期号:6 页码:435-447
英文摘要	Hydrology of the high glacierized region in the Tianshan Mountains is an important water resource for arid and semiarid areas of China, even Central Asia. The hydrological process is complex to understand, due to the high variability in climate and the lack of hydrometeorological data. Based on field observations, the present study analyzes the meteorological and hydrological characteristics of the Koxkar Glacier River Basin during 2008-2011; and the factors influencing climate impact on glacier hydrology are discussed. The results show that precipitation at the terminus of the glacier was 426.2 mm, 471.8 mm, 624.9 mm, and 532 mm in 2008, 2009, 2010, and 2011, respectively. Discharge increases starting in May, reaches its highest value in July and August, and then starts to decrease. The mean annual discharge was 118.23 x 10(6) m(3) during the four years observed, with 87.0% occurring in the ablation season (May September). During the study period, the runoff in August accounted for 29% of total streamflow, followed by July (22%) and June (14%). The runoff exhibited obviously high interannual variability from April to September, induced by drastic changes in climate factors. Discharge autocorrelations are very high for all the years. The climate factors show different influences on discharge. The highest correlation R between daily temperature and discharge was for a time lag of 2-3 days on the Koxkar Glacier (0.66-0.76). The daily depth of nmoff to daily temperature and daily water vapor pressure had an R-2 value of 0.56 and 0.69, respectively, which could be described by an exponential function. A closer relationship is found between nmoff and either temperature or water vapor pressure on a monthly scale; the R-2 values are 0.65 and 0.78, respectively. The study helps us to understand the mechanisms of the hydrological meteorological system of typical regional glaciers and to provide a reference for glacier-runoff simulations and water-resource management.
英文关键词	melt runoff Koxkar Glacier hydrometeorological observation relationship
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000506023900004
WOS关键词	HYDROLOGICAL CHARACTERISTICS ; MASS-BALANCE ; NO. 1 ; STORAGE ; REGION
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334037
作者单位	[Xu, Min; Kang, ShiChang] Chinese Acad Sci, State Key Lab Cryospher Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China; [Han, HaiDong] Chinese Acad Sci, Div Hydrol Water Land Resources Cold & Arid Reg, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China; [Xu, Min; Han, HaiDong; Kang, ShiChang; Tao, Hua] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, 320 West Donggang Rd, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Xu, Min,Han, HaiDong,Kang, ShiChang,et al. Characteristics of climate and melt runoff in the Koxkar Glacier River Basin, south slope of the Tianshan Mountains, Northwest China[J]. 中国科学院西北生态环境资源研究院,2019,11(6):435-447.
APA	Xu, Min,Han, HaiDong,Kang, ShiChang,&Tao, Hua.(2019).Characteristics of climate and melt runoff in the Koxkar Glacier River Basin, south slope of the Tianshan Mountains, Northwest China.SCIENCES IN COLD AND ARID REGIONS,11(6),435-447.
MLA	Xu, Min,et al."Characteristics of climate and melt runoff in the Koxkar Glacier River Basin, south slope of the Tianshan Mountains, Northwest China".SCIENCES IN COLD AND ARID REGIONS 11.6(2019):435-447.