MODELING COASTAL WATER TABLE FLUCTUATIONS USING PFLOTRAN

Coastal aquifers are highly dynamic groundwater systems. Sea level rise will cause a in coastal tables resulting increased risk of shallow or emergent (Befus et al., 2020). Marine water fluctuations the beach table to oscillate over relatively large range. Understanding these oscillations is crucial, as (i.e., high) may impact subsurface infrastructure, mobilize sediment, and increase liquefaction risks. Although impacts tides wave setup on have been studied (e.g., Nielsen, 1990; Housego al, 2021), cumulative runup, partially saturated flow, complex topography, dual tidal forcing for bay-backed regions not explored. This work numerically models which compared in-situ swash observations at Cardiff State Beach Encinitas, CA.