南方科技大学知识苑(SUSTech KC): Effects of Unsaturated Flow on Hydraulic Head Response to Earth Tides-An Analytical Model

题名	Effects of Unsaturated Flow on Hydraulic Head Response to Earth Tides-An Analytical Model
作者	Liang, Xiuyu1,2 ; Wang, Chi-Yuen 3; Ma, Enze1 ; Zhang, You-Kuan1,4
通讯作者	Liang, Xiuyu
发表日期	2022-02-01
DOI	10.1029/2021WR030337
发表期刊	WATER RESOURCES RESEARCH 影响因子和分区
ISSN	0043-1397
EISSN	1944-7973
卷号	58 期号:2
摘要	Responses of groundwater levels to Earth tides have been widely studied to evaluate aquifer properties because it has been shown to be an economical and effective approach to estimate aquifer parameters. Existing studies suggest that unsaturated zones may have non-negligible effects on groundwater responses to Earth tides in an unconfined aquifer. However, an analytical model for these effects is unavailable; as a result, the impacts of the unsaturated flow on the tidal response of water levels has not been fully explored. Here we present an analytical solution for the coupled unsaturated-saturated flow equation, which is linearized by the perturbation method, to study the hydraulic head responses to Earth tides. The solutions are compared with that from numerical simulation using the finite-element method built in COMSOL Multiphysics and an existing numerical model. The results indicate that the unsaturated zone has significant impacts on the hydraulic head responses to Earth tides. The traditional model for an unconfined aquifer that neglects the effects of an unsaturated zone commonly underestimates the amplitude ratio and overestimates the phase shift. The fluctuations of the water table near the ground surface (<1.0 m) causes dramatic variations of both amplitude ratio and phase shift, which in turn cause the traditional model to fail in estimating aquifer parameters. The solutions are applied to field data to interpret large seasonal variations in the tidal responses. The solutions derived in this study should be an important addition to existing analytical models for tidal analysis.
关键词	tidal analysis unsaturated flow analytical solution
相关链接	[来源记录]
收录类别	SCI ; EI
语种	英语
学校署名	第一 ; 通讯
资助项目	National Natural Science Foundation of China[41977165,41830861,42172275] ; Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control[2017B030301012]
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
WOS类目	Environmental Sciences ; Limnology ; Water Resources
WOS记录号	WOS:000763453500020
出版者	AMER GEOPHYSICAL UNION
EI入藏号	20220911708581
EI主题词	Aquifers ; Groundwater resources ; Numerical methods ; Numerical models ; Perturbation techniques ; Tide gages ; Tides ; Water levels
EI分类号	Groundwater:444.2 ; Oceanographic Research Instruments:471.2 ; Seawater, Tides and Waves:471.4 ; Mathematics:921 ; Numerical Methods:921.6 ; Special Purpose Instruments:943.3
ESI学科分类	ENVIRONMENT/ECOLOGY
来源库	Web of Science
引用统计	被引频次[WOS]：16
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/313185
专题	工学院_环境科学与工程学院
作者单位	1.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen, Peoples R China 2.Southern Univ Sci & Technol, State Environm Protect Key Lab Integrated Surface, Shenzhen, Peoples R China 3.Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA 4.Univ Iowa, Dept Earth & Environm Sci, Iowa City, IA USA
第一作者单位	环境科学与工程学院; 南方科技大学
通讯作者单位	环境科学与工程学院; 南方科技大学
第一作者的第一单位	环境科学与工程学院
推荐引用方式 GB/T 7714	Liang, Xiuyu,Wang, Chi-Yuen,Ma, Enze,et al. Effects of Unsaturated Flow on Hydraulic Head Response to Earth Tides-An Analytical Model[J]. WATER RESOURCES RESEARCH,2022,58(2).
APA	Liang, Xiuyu,Wang, Chi-Yuen,Ma, Enze,&Zhang, You-Kuan.(2022).Effects of Unsaturated Flow on Hydraulic Head Response to Earth Tides-An Analytical Model.WATER RESOURCES RESEARCH,58(2).
MLA	Liang, Xiuyu,et al."Effects of Unsaturated Flow on Hydraulic Head Response to Earth Tides-An Analytical Model".WATER RESOURCES RESEARCH 58.2(2022).