Numerical simulation of groundwater flow for a coastal plain in Japan: Data collection and model calibration

作者：He Bin^*; Takase Keiji; Wang Yi

来源：Environmental Geology, 2008, 55(8): 1745-1753.

DOI：10.1007/s00254-007-1125-8

• Aquifer systems
• Coastal aquifers
• Coastal plains
• Data collections
• Decision makers
• Field data
• Flow pathways
• Governing equations
• Ground surface elevation
• Ground water levels
• Groundwater modelling
• Hydrogeological
• Input variables
• Japan
• Model calibration
• Numerical modeling
• Numerical simulations
• Resource managers
• Steady states
• Three-dimensional finite element models
• Transient states
• Visual representations

Using a three-dimensional finite element model, this study characterizes groundwater flow in a costal plain of the Seto Inland Sea, Japan. The model characterization involved taking field data describing the aquifer system and translating this information into input variables that the model code uses to solve governing equations of flow. Geological geometry and the number of aquifers have been analyzed based on a large amount of geological, hydrogeological and topographical data. Results of study demonstrate a high correlation between the ground surface elevation and the groundwater level in the shallow coastal aquifer. For calibrating the numerical groundwater model, the groundwater flow was simulated in steady state. In addition, the groundwater level and trend in the transient state has also been elucidated. The numerical result provides excellent visual representations of groundwater flow, presenting resource managers and decision makers with a clear understanding of the nature of the types of groundwater flow pathways. Results build a base for further analysis under different future scenarios.

• 出版日期2008
• 单位The University of Tokyo; university of tokyo