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DOI	10.1016/j.advwatres.2021.104012
	An approximate analytical solution of depth to water table driven by periodical precipitation and evapotranspiration in shallow groundwater zones
	Guo, Xin; Wang, Xu-sheng; Li, Jun; Wang, Tongke; Zhao, Zhixue; Hao, Huiqing; Zhan, Hongbin; Wang, Qi; Hao, Yonghong
通讯作者	Li, J (corresponding author), Tianjin Normal Univ, Sch Math Sci, Tianjin 300387, Peoples R China. ; Hao, YH (corresponding author), Tianjin Normal Univ, Tianjin Key Lab Water Resources & Environm, Tianjin 300387, Peoples R China.
来源期刊	ADVANCES IN WATER RESOURCES
ISSN	0309-1708
EISSN	1872-9657
出版年	2021
卷号	155
英文摘要	Depth to water table (DWT) for an unconfined aquifer affects a wide range of hydrological, ecological, and agri-cultural problems such as soil salinization, plant type, and crop output. In a world without human impacts, DWT in shallow groundwater zones is mainly driven by evapotranspiration and precipitation. In the real-world however, human impacts on groundwater hydrological processes are ubiquitous, which hinders one to fully un-derstand the natural groundwater hydrological rule. The purpose of this study is to derive an analytical solution of precipitation-evapotranspiration driven DWT irrespective of the human impacts. Through pretreatment of practical data to eliminate human impacts, we show that the proposed method is efficient in dealing with the real-world problems. Specifically, we establish a mathematical model describing impacts of periodic evapotran-spiration and precipitation on DWT. An innovative quasi-analytical solution using the Fourier series is developed and analyzed in detail based on the model. This study indicates that the amplitude of DWT is correlated linearly with the amplitude of precipitation and quadratically with the amplitude of potential evapotranspiration. The phase position of DWT is subject to the phase lag between the precipitation and potential evapotranspiration. In arid regions, the evapotranspiration has a greater influence on the phase of DWT than the precipitation. This quasi-analytical solution is limited for a shallow groundwater situation in which DWT is less than the extinction depth of groundwater evapotranspiration.
英文关键词	Groundwater evapotranspiration Periodicity Amplitude Phase Fourier series
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000696986200004
WOS关键词	SEASONALITY ; SPACE
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362332
作者单位	[Guo, Xin; Li, Jun; Wang, Tongke; Zhao, Zhixue; Wang, Qi] Tianjin Normal Univ, Sch Math Sci, Tianjin 300387, Peoples R China; [Wang, Xu-sheng] China Univ Geosci Beijing, Sch Water Resources & Environm, Beijing 100083, Peoples R China; [Hao, Huiqing; Hao, Yonghong] Tianjin Normal Univ, Tianjin Key Lab Water Resources & Environm, Tianjin 300387, Peoples R China; [Zhan, Hongbin] Texas A&M Univ, Dept Geol & Geophys, College Stn, TX 77843 USA
推荐引用方式 GB/T 7714	Guo, Xin,Wang, Xu-sheng,Li, Jun,et al. An approximate analytical solution of depth to water table driven by periodical precipitation and evapotranspiration in shallow groundwater zones[J],2021,155.
APA	Guo, Xin.,Wang, Xu-sheng.,Li, Jun.,Wang, Tongke.,Zhao, Zhixue.,...&Hao, Yonghong.(2021).An approximate analytical solution of depth to water table driven by periodical precipitation and evapotranspiration in shallow groundwater zones.ADVANCES IN WATER RESOURCES,155.
MLA	Guo, Xin,et al."An approximate analytical solution of depth to water table driven by periodical precipitation and evapotranspiration in shallow groundwater zones".ADVANCES IN WATER RESOURCES 155(2021).