干旱区生态环境知识资源中心(Arid): Probabilistic analysis of the controls on groundwater depth using Copula Functions

Arid

DOI	10.2166/nh.2020.147
	Probabilistic analysis of the controls on groundwater depth using Copula Functions
	Bai, Yifei 1,2; Wang, Yi 1; Chen, Yaning1 ; Zhang, Leyuan 1,2
通讯作者	Wang, Yi
来源期刊	HYDROLOGY RESEARCH
ISSN	0029-1277
EISSN	2224-7955
出版年	2020
卷号	51 期号:3 页码:406-422
英文摘要	Groundwater is an essential water resource in the Yarkant River Basin Irrigation District, which is the largest oasis in Xinjiang, China. This study used a novel approach to analyze the relationship between groundwater depth and three driving factors by developing Copula Functions from monthly time series data collected from 16 monitoring wells. More specifically, marginal distribution and joint distribution functions were established, and the conditional probabilities for three data ranges were calculated using both two- and three-dimensional Copula Functions. The developed statistical models showed that groundwater exploitation, runoff, and surface water irrigation significantly affected groundwater depth. The most significant effect on water table declines was associated with groundwater exploitation and lagged 1-month behind the groundwater withdrawals. The amount of runoff and irrigation were both inversely related to water table depth due to groundwater recharge. Frank Copula Functions were found to produce the best fit to the joint distribution of the variables and were used herein, allowing for the establishment of a detailed probability distribution of the change in groundwater depth under the combined effect of multiple controlling factors. The results provided key insights into how irrigation and groundwater withdrawals can be adjusted to effectively manage groundwater resources.
英文关键词	conditional probability Copula Functions groundwater depth groundwater management Yarkant River Basin
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000540590800003
WOS关键词	TARIM RIVER-BASIN ; FREQUENCY-ANALYSIS ; MULTIVARIATE ; FRAMEWORK ; CONSTRUCTIONS ; RESOURCES ; REGION ; OASIS
WOS类目	Water Resources
WOS研究方向	Water Resources
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319580
作者单位	1.Chinese Acad Sci, State Key Lab Desert & Oasis Ecol, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Bai, Yifei,Wang, Yi,Chen, Yaning,et al. Probabilistic analysis of the controls on groundwater depth using Copula Functions[J]. 中国科学院新疆生态与地理研究所,2020,51(3):406-422.
APA	Bai, Yifei,Wang, Yi,Chen, Yaning,&Zhang, Leyuan.(2020).Probabilistic analysis of the controls on groundwater depth using Copula Functions.HYDROLOGY RESEARCH,51(3),406-422.
MLA	Bai, Yifei,et al."Probabilistic analysis of the controls on groundwater depth using Copula Functions".HYDROLOGY RESEARCH 51.3(2020):406-422.