Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jhydrol.2011.07.002 |
Integration of SWAP and MODFLOW-2000 for modeling groundwater dynamics in shallow water table areas | |
Xu, Xu1,2; Huang, Guanhua1,2; Zhan, Hongbin3,4,5; Qu, Zhongyi6; Huang, Quanzhong1,2 | |
通讯作者 | Huang, Guanhua |
会议名称 | Hydrology Conference |
会议日期 | OCT 11-13, 2010 |
会议地点 | San Diego, CA |
英文摘要 | Reasonable estimates of groundwater recharge and discharge through evapotranspiration is critical for sustainable water resources management in shallow water table areas. The hydrologic processes are highly interactive between the vadose zone and groundwater under shallow water table conditions. In traditional groundwater flow models, the recharge and evapotranspiration fluxes are often oversimplified as a simple sink/source term. However, the recharge and evapotranspiration are observed to vary with topography, soil type, land use, and water management practices. Additionally, they are known to vary temporally and spatially and are difficult to estimate, especially in arid and semi-arid regions. Thus, it is important to devise an appropriate method to estimate the recharge and evapotranspiration fluxes in groundwater modeling. In this study, a Soil-Water-Atmosphere-Plant (SWAP) package was integrated into a groundwater flow model (MODFLOW) in such a way that the SWAP package calculates vertical flux for MODFLOW, while MODFLOW provides averaged water table depth to determine the bottom boundary condition for SWAP zones. The SWAP zones in MODFLOW are derived from a combination of topology, soil type, land use, water management practices using geographic information systems (GIS). Then the MODFLOW with SWAP package was tested using a two-dimensional saturated-unsaturated water table recharge experiment. Results showed that the simulated water table elevations matched well with the observed ones except at the early period during which they were slightly higher than the observed ones, probably due to neglecting lateral diffusion in the unsaturated zone. Finally, we applied MODFLOW with SWAP package to simulate a regional groundwater flow problem in Hetao Irrigation District, upper Yellow River basin of North China. The simulation results validated the applicability of the developed MODFLOW with SWAP package for practical regional groundwater modeling. (C) 2011 Elsevier B.V. All rights reserved. |
英文关键词 | Groundwater modeling Vadose zone Recharge Evapotranspiration MODFLOW SWAP package |
来源出版物 | JOURNAL OF HYDROLOGY |
ISSN | 0022-1694 |
EISSN | 1879-2707 |
出版年 | 2012 |
卷号 | 412 |
页码 | 170-181 |
出版者 | ELSEVIER SCIENCE BV |
类型 | Article;Proceedings Paper |
语种 | 英语 |
国家 | Peoples R China;USA |
收录类别 | SCI-E ; CPCI-S |
WOS记录号 | WOS:000300759100014 |
WOS关键词 | HETAO IRRIGATION DISTRICT ; YELLOW-RIVER BASIN ; HYDRAULIC CONDUCTIVITY ; RECHARGE ; SIMULATION ; FLOW ; SOIL ; EVAPORATION ; YIELD ; ZONE |
WOS类目 | Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources |
WOS研究方向 | Engineering ; Geology ; Water Resources |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/301193 |
作者单位 | 1.China Agr Univ, Chinese Israeli Int Ctr Res & Training Agr, Beijing 100083, Peoples R China; 2.China Agr Univ, Ctr Agr Water Res, Beijing 100083, Peoples R China; 3.Texas A&M Univ, Dept Geol & Geophys, College Stn, TX 77843 USA; 4.China Univ Geosci, Fac Engn, Wuhan 430074, Hubei, Peoples R China; 5.China Univ Geosci, Sch Environm Studies, Wuhan 430074, Hubei, Peoples R China; 6.Inner Mongolia Agr Univ, Coll Water Conservancy & Civil Engn, Hohhot 010018, Peoples R China |
推荐引用方式 GB/T 7714 | Xu, Xu,Huang, Guanhua,Zhan, Hongbin,et al. Integration of SWAP and MODFLOW-2000 for modeling groundwater dynamics in shallow water table areas[C]:ELSEVIER SCIENCE BV,2012:170-181. |
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