Boundary of the ground-water flow model by D'Agnese and others (1997), for the Death Valley regional ground-water flow system study, Nevada and California

This digital data set defines the boundary of the ground-water flow model by D'Agnese and others (1997). This steady-state, 3-layer ground-water flow model was developed by the U.S. Geological Survey (USGS) for the U.S. Department of Energy (DOE) to support investigations at Yucca Mountain, Nevada (see "Larger Work Citation", Chapter A, pages 7-8, for details). The model area encompasses approximately 35,000 square-kilometers of southern Nevada and California, or most of the Death Valley regional ground-water flow system (DVRFS) defined by D'Agnese and others (1997). Where possible, the lateral boundary encompassing the model area is a no-flow boundary resulting from physical barriers or hydraulic separation of flow regimes (ground-water divides or regional flow lines). Three major subregional flow systems are defined within the model area and represent areas where regional ground-water flow moves from recharge areas in Nevada to discharge areas in Death Valley.

本数字数据集界定了达格内塞（D'Agnese）等人（1997年）构建的地下水流模型（ground-water flow model）的边界。该稳态三层地下水流模型由美国地质调查局（U.S. Geological Survey, USGS）为美国能源部（U.S. Department of Energy, DOE）研发，用于支撑内华达州尤卡山（Yucca Mountain）的相关调查工作，详细信息请参阅"Larger Work Citation"章节A第7至8页。该模型覆盖范围涵盖内华达州南部与加利福尼亚州约35000平方千米的区域，即达格内塞等人（1997年）所定义的绝大多数死亡谷区域地下水流系统（Death Valley regional ground-water flow system, DVRFS）。在条件允许的情况下，模型区域的侧向边界被设定为零流量边界（no-flow boundary），其形成原因包括物理阻隔或水流流态的水力分隔（即地下水分水岭（ground-water divides）或区域流线（regional flow lines））。模型区域内共划定了三个主要的亚区域水流系统，这些系统对应区域地下水流从内华达州补给区（recharge areas）流向死亡谷排泄区（discharge areas）的路径范围。