EXPERIMENTAL STUDY OF THE WAVE-INDUCED GROUNDWATER DYNAMICS UNDER DIFFERENT PERIODS

Coastal beach is alternately covered by and exposed to external driving forces such as waves and tides, leading to significant response in the groundwater dynamics in coastal aquifer, which is closely related to various nearshore issues, e.g., pollutant transport and coastal erosion. A number of recent studies has been conducted to investigate the wave- induced groundwater dynamics (Yang et al., 2022; Zheng et al., 2023). However, the effect of wave periods on the coastal groundwater response is still unclear. In this study, a series of regular wave laboratory experiments were conducted to reveal the spatiotemporal features of the groundwater dynamics including the total water head and the seepage flow, paying particular attention to the wave period effect.