气候变化领域集成服务门户(CCPortal): Assessing Underground Water Exchange Between Regions Using GRACE Data

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DOI	10.1029/2020JD032570
	Assessing Underground Water Exchange Between Regions Using GRACE Data
	Yin W.; Hu L.; Zheng W.; Jiao J.J.; Han S.-C.; Zhang M.
发表日期	2020
ISSN	2169897X
卷号	125 期号:17
英文摘要	Quantifying the underground water exchange between adjacent regions is a common question in field investigations and groundwater flow models. This paper proposes an innovative approach to assess underground water exchange patterns based on Gravity Recovery and Climate Experiment (GRACE) observations, the water balance method, and Darcy's law. The dynamic patterns of flux changes are investigated over four boundaries of an arid plain. Moreover, the causes of anthropogenic and climate factors are evaluated using the entropy method and the partial least squares regression (PLSR) model. The results indicate that terrestrial water storage (TWS) in the study area shows a decreasing trend at a rate of −1.77 ± 0.21 mm/yr from 2003 to 2015. The water resources recharging the study area from its southern boundary show a noticeable increasing trend, which is mainly attributed to the warming climate and increasing precipitation on the Qilian Mountains. The Ecological Water Diversion Project and the imbalance between precipitation and evapotranspiration are the main factors inducing the decline of flux changes for the northern, western, and eastern boundaries. Under the constrains of empirical values of hydrogeological parameters, GRACE-based methods find that increment of the flux changes in the southern boundary may account for approximately 0.43% of the investigated flux in 2000, and the decrement of flux changes in the eastern boundary may be about 0.01% to the previous measured results. Anthropogenic activities are the dominant driving force for the changes in water resources, with the weight of 88.70%. The presented method can provide insights into the patterns of flux change in data-poor areas. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	flux boundary; GRACE; groundwater model; the arid plain; the partial least squares regression
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185785
作者单位	Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing, China; College of Water Sciences, Beijing Normal University, Beijing, China; Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology, Beijing, China; Engineering Research Center of Groundwater Pollution Control and Remediation of Ministry of Education, Beijing Normal University, Beijing, China; Department of Earth Sciences and Shenzhen Research Institute, University of Hong Kong, Hong Kong; School of Engineering, University of Newcastle, Callaghan, NSW, Australia
推荐引用方式 GB/T 7714	Yin W.,Hu L.,Zheng W.,et al. Assessing Underground Water Exchange Between Regions Using GRACE Data[J],2020,125(17).
APA	Yin W.,Hu L.,Zheng W.,Jiao J.J.,Han S.-C.,&Zhang M..(2020).Assessing Underground Water Exchange Between Regions Using GRACE Data.Journal of Geophysical Research: Atmospheres,125(17).
MLA	Yin W.,et al."Assessing Underground Water Exchange Between Regions Using GRACE Data".Journal of Geophysical Research: Atmospheres 125.17(2020).