Partially Penetrating Lake-Aquifer Interaction in a Laboratory-scale Tidal Setting

Freshwater lakes close to the coast are important ecotones with strong functional dependency on ocean forces. Tides are likely to create dynamic lake-groundwater interactions, which have not been previously assessed for partially penetrating lakes. This study investigates tidal lake-groundwater interaction in a laboratory-scale aquifer cross-section with and without the existence of a partially penetrating lake. The experimental observations were reproduced by numerical models to allow for an in-depth evaluation of the experiments beyond those provided by direct measurements.

近岸淡水湖泊是一类重要的生态交错带（ecotones），其功能运转高度依赖海洋动力过程。潮汐极易引发复杂的湖-地下水相互作用，但此前尚未针对部分穿透型湖泊（partially penetrating lakes）开展此类相互作用的相关评估研究。本研究以实验室尺度的含水层（aquifer）剖面为研究对象，设置存在与不存在部分穿透型湖泊两种对比工况，探究潮汐驱动下的湖-地下水相互作用过程。本研究通过数值模型复现实验观测结果，从而能够开展超出直接测量范畴的实验深度解析与评估。