Abstract We employ passive seismic interferometry to study seismic hydrological responses in a snowmelt‐driven, semi‐arid catchment. Seismic velocity changes (dv/v) at 2–4 Hz and 4–8 Hz are analyzed from six stations along a hillslope transect between May and November 2023 and compared to precipitation, soil moisture, and groundwater level timeseries. Variation in dv/v correlates with groundwater level and mirrors seasonal catchment wetting and evapotranspiration. Correlations between dv/v and groundwater are stronger at stations on the cooler, wetter, north‐facing hillslope than on the warmer, drier, south‐facing hillslope, consistent with expected recharge and evapotranspiration patterns. Different dv/v behaviors across two bands suggest depth‐dependent pore‐pressure changes, outlining different hydrologic zones. These findings highlight the utility of dv/v measurements in detecting laterally supplied water inputs, providing insight into local vertical water losses, effectively tracking groundwater–vegetation interactions, and supporting ecohydrological research and water management in semi‐arid snowmelt systems.
Feng et al. (Tue,) studied this question.