干旱区生态环境知识资源中心(Arid): A new quasi-3-D model with a dual iterative coupling scheme for simulating unsaturated-saturated water flow and solute transport at a regional scale

Arid

DOI	10.1016/j.jhydrol.2021.126780
	A new quasi-3-D model with a dual iterative coupling scheme for simulating unsaturated-saturated water flow and solute transport at a regional scale
	Mao, Wei; Zhu, Yan; Ye, Ming; Zhang, Xiaoping; Wu, Jingwei; Yang, Jinzhong
通讯作者	Zhu, Y (corresponding author), Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Hubei, Peoples R China.
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2021
卷号	602
英文摘要	Soil water in an unsaturated zone is the major source of groundwater recharge, and likewise soil contaminants are the major source of groundwater contamination. It is thus essential to jointly consider soil water movement and solute transport together with groundwater movement and solute transport, which is particularly important when addressing regional-scale problems. This study developed a new quasi-3-D model for simulating regional-scale saturated-unsaturated water movement and solute transport in arid and semi-arid agricultural areas. The unsaturated soil water movement and solute transport processes are simulated by a 1-D soil water and solute transport model referred to as UBMOD, and the saturated groundwater movement and solute transport are simulated by MODFLOW and MT3DMS. In the quasi-3-D model, the soil water movement and groundwater movement modules are iteratively coupled and the soil solute transport and groundwater solute transport modules are iteratively couple. This is referred to as a dual iterative coupling scheme. Strength and weakness of the quasi-3-D model and the coupling scheme were evaluated with two synthetic cases and a real-world application. Results indicate satisfactory performance of the model, which demonstrates the reliability of the dual iterative coupling scheme. Besides, the impacts of spatial and temporal discretization and stress period on model stability and accuracy has been evaluated. And the model is more computationally efficient than the fully numerical methods based on Richards' equation when the problem is a 2D/3D problem with a scale larger than 10 m. Moreover, the application to the Hetao Irrigation District indicates that the developed model is effective and efficient for the real-world regional-scale agricultural problems. Above all, it is concluded that the new model is more suitable than existing models for simulating regional-scale unsaturated-saturated soil water movement and solute transport in arid and semi-arid agricultural areas.
英文关键词	Regional scale problems Quasi-three-dimensional model Unsaturated-saturated water movement and solute transport Dual iterative coupling scheme
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000704794400070
WOS关键词	FULLY INTEGRATED MODEL ; SOIL-WATER ; RICHARDS EQUATION ; VADOSE ZONE ; MODFLOW-UZF ; GROUNDWATER ; SALINITY ; DYNAMICS
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363923
作者单位	[Mao, Wei; Zhu, Yan; Wu, Jingwei; Yang, Jinzhong] Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Hubei, Peoples R China; [Ye, Ming] Florida State Univ, Dept Earth Ocean & Atmospher Sci, Tallahassee, FL 32306 USA; [Zhang, Xiaoping] Wuhan Univ, Sch Math & Stat, Wuhan 430072, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Mao, Wei,Zhu, Yan,Ye, Ming,et al. A new quasi-3-D model with a dual iterative coupling scheme for simulating unsaturated-saturated water flow and solute transport at a regional scale[J],2021,602.
APA	Mao, Wei,Zhu, Yan,Ye, Ming,Zhang, Xiaoping,Wu, Jingwei,&Yang, Jinzhong.(2021).A new quasi-3-D model with a dual iterative coupling scheme for simulating unsaturated-saturated water flow and solute transport at a regional scale.JOURNAL OF HYDROLOGY,602.
MLA	Mao, Wei,et al."A new quasi-3-D model with a dual iterative coupling scheme for simulating unsaturated-saturated water flow and solute transport at a regional scale".JOURNAL OF HYDROLOGY 602(2021).