Loading effect on wave pumping driven seawater-groundwater circulation in submarine aquifer

Tide and wave are both significant driven forces of submarine groundwater discharge (SGD). The hydrodynamic process of tidal SGD is well studied while wave induced part is still challenging to quantify. In this paper, an analytical study was performed to investigate wave pumping-driven SGD in subsea sediments. The loading effect of seawater weight overlying the seabed has been considered in the groundwater flow equation. Two dimensional simulations governed by this analytical solution were applied to examine water head fluctuations within permeable sediments. The analytical solution was validated by simulated water head fluctuations, which revealed the influence of poro-elastic property of sediment on the hydrodynamic process within the permeable seabed. The analytical and simulated results may provide guidance for assessing the wave-induced SGD and shed light on modeling the biogeochemistry process in wave dominated porous seabed environment.