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2021/02/23 14:00 Dr. Yu-Li Wang（Department of Hydrology & Atmospheric Sciences, University of Arizona）
Seminar
Poster： ╱ Post date：2021-02-20NCU IHOS Seminar Announcement
Speaker：Dr. Yu-Li Wang (Postdoctoral Research Associate)
Place：S-325, Science Building 1
Abstract：
Title：Aquifer Characterization and Sustainable Water Resources Management
Speaker：Dr. Yu-Li Wang (Postdoctoral Research Associate)
Department of Hydrology & Atmospheric Sciences, University of Arizona
Time：02/23（Tue.）14：00
Place：S-325, Science Building 1
Abstract：
The movement of groundwater is controlled by the subsurface hydraulic structures. With the knowledge of aquifer parameter distributions, numerical surface water and groundwater models can be used for long-term management of water resources through estimation, prediction, and scenario analysis of surface water and groundwater systems. Fist, we examine the usefulness of periodic pumping test and oscillatory hydraulic tomography on the subsurface characterization resolution. To approach the objectives, the governing equation under a stochastic framework is formulated to explain the frequency dependence, scenario dependence, and dynamic effects of parameters using conditional (residual) flux and storage. We then use the ensemble average of unconditional flux and storage to demonstrate that the multifrequency excitations do not overcome the under-determined inverse problem. The resolution of estimates is not significantly improved. Next, the ability of utilizing river stage fluctuation as a spatial and temporal varying source for basin-scale hydraulic tomographic survey is investigated. The selected hourly, daily, monthly, and seasonal river stage (or a large water body) variations in response to tidal effects, precipitations, climate changes, and other environmental events impact the efficiency of aquifer characterization. This study highlights the power of river stage fluctuation on imaging aquifer heterogeneity.
Last modification time：2021-02-20 AM 11:48
