GroMoPo Metadata for Dogo Plain coastal FEMWATER model

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.本研究采用三维有限元模型（three-dimensional finite element model），对日本濑户内海（Seto Inland Sea）沿岸平原的地下水流（groundwater flow）特征进行了刻画。模型构建过程中，研究人员收集了描述含水层系统（aquifer system）的野外实测数据，并将这些信息转化为模型代码求解水流控制方程（governing equations of flow）所需的输入变量。本研究基于大量地质、水文地质（hydrogeological）及地形（topographical）数据，分析了区域地质几何形态与含水层数量。研究结果表明，沿海浅层含水层的地表高程与地下水位之间存在高度相关性。为率定该数值地下水流模型，研究首先以稳态（steady state）条件模拟地下水流过程；此外，还阐明了非稳态（transient state）条件下的地下水位变化规律与演化趋势。数值模拟结果可直观呈现地下水流场分布，为资源管理者与决策者清晰理解各类地下水流路径的特征提供了有力支撑。本研究成果可为未来不同情景下的进一步分析奠定基础。