Japan Geoscience Union Meeting 2019

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[E] Poster

A (Atmospheric and Hydrospheric Sciences ) » A-GE Geological & Soil Environment

[A-GE29] Energy-Environment-Water Nexus and Sustainable Development

Thu. May 30, 2019 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall8, Makuhari Messe)

convener:Ming Zhang(Institute for Geo-Resources and Environment, Geological Survey of Japan, AIST), Ken Kawamoto(Graduate School of Science and Engineering, Saitama University), Jet-Chau Wen(National Yunlin University of Science and Technology), Yonghong Hao(Tianjin Normal University)

[AGE29-P02] Groundwater response to tidal fluctuations in a leaky confined coastal aquifer with finite length

*Zhi-Xue Zhao1, Tongke Wang1, Jun Li1 (1.Tianjin Normal University, Tianjin, China)

Keywords:Coastal aquifer, Analytical solution, Leakage, Tidal effect

We derive an analytical solution to calculate the groundwater response to tidal fluctuations in a horizontally-finite, leaky, coastal aquifer system. Our solution represents a generalized formulation that encompasses previous results as special cases. Based on the solution, we investigate the joint effects of the leakage and inland aquifer length on the behavior of the groundwater level fluctuation. We show that neglecting the finite-length effect may lead to significant errors in parameter estimations. Moreover, the range where the finite-length effect dominates is quantitatively determined by a characteristic dimensionless parameter. Finally, we demonstrate the usage of the proposed solution in calculating hydraulic properties through an application to a field experiment conducted at the Seine River estuary, France.