GroMoPo Metadata for Manglaralto coastal aquifer model

Coastal aquifers are part of the natural resources contributing to local development and promote resilience in the most vulnerable communities near the sea. Manglaralto, an Ecuadorian coastal parish, is affected by water resource scarcity. The increase in salinity and deterioration of the water quality is generated by the local and floating population's demand, causing an increase in the Total Dissolved Solids (TDS) concentrations and decreasing the aquifer's piezometric levels. The aim is to establish a numerical model of flow and transport of the Manglaralto coastal aquifer by using hydrogeological data and Visual Transin software, relating the hydraulic importance of a dyke's design (\"tape\") and its impact on the quality of the water. The methodology is (i) hydrogeological database analysis, (ii) the system's recharge concerning the soil water balance, (iii) the boundary conditions of the flow and transport model and, (iv) the results and validation of the numerical simulation. The results configure the importance of the coastal aquifer's artificial recharge in the area where the tape is located, as reflected in the increase in piezometric levels and the decrease in salinity in wells near the sea. In conclusion, the numerical model of flow and transport allows expanding the knowledge of the variation of the piezometric levels and TDS concentrations over time, the importance of recharge in the hydrogeological system's operation, and correct community management resilience and projection to sustainable development.

沿海含水层是助力地方发展的自然资源之一，同时可为沿海周边最易受影响的社区提升韧性。曼格拉拉托（Manglaralto）是厄瓜多尔的一处沿海堂区，当前正面临水资源短缺问题。当地及流动人口的用水需求引发盐度上升与水质恶化，导致总溶解固体（Total Dissolved Solids, TDS）浓度升高，同时降低了含水层的测压水位。本研究旨在利用水文地质数据与Visual Transin软件，构建曼格拉拉托沿海含水层的水流与溶质运移数值模型，分析堤堰（"tape"）设计的水力重要性及其对水质的影响。研究方法包括：(i) 水文地质数据库分析；(ii) 基于土壤水平衡的系统补给量核算；(iii) 水流与溶质运移模型的边界条件设定；(iv) 数值模拟结果与验证。研究结果体现了堤堰所在区域沿海含水层人工补给的重要性，具体表现为沿海附近水井的测压水位升高、盐度降低。综上，本水流与溶质运移数值模型可深化对测压水位与总溶解固体浓度随时间变化规律的认知，明确补给在水文地质系统运行中的重要性，并助力社区优化韧性管理、推进可持续发展规划。