000007806 001__ 7806
000007806 005__ 20260115151228.0
000007806 037__ $$aPOSTER-2026-0026
000007806 100__ $$aSaraswati, Anita
000007806 245__ $$aInvestigating Soil Saturation Changes through Geophysical Data Gravimetric and Seismological Perspectives
000007806 260__ $$c2025
000007806 269__ $$c2025-04-29
000007806 520__ $$aThe water cycle impacts geophysical signals, influencing our ability to monitor subsurface hydrology. At the Membach geophysical station in Belgium, we integrate gravity and ambient seismic noise data to study hydrological variations and develop a numerical hydrological model at a local scale. Our findings reveal that gravity observations at Membach station exhibit gradual changes, reaching a peak at  2-day after rainfall, reflecting subsurface water redistribution and storage processes. Concurrently, increased soil saturation corresponds with a decrease in HVSR (Horizontal-to-Vertical Spectral Ratio), indicating reduced stiffness and changes in seismic wave propagation. Furthermore, relative velocity changes (dv/v) show frequency-dependent time delays, with deeper layers exhibiting slower responses compared to shallower regions. These results highlight the dynamic relationship between rainfall, soil saturation, and geophysical responses, providing new insights into critical zone processes. By combining gravimetry and ambient seismic noise, we address challenges in studying deep and complex subsurface zones, where traditional hydrological methods often fall short. This approach not only enhances our understanding of subsurface hydrology but also improves water resource management and critical zone studies. The integration of geophysical methods offers a comprehensive framework for monitoring hydrological dynamics, advancing our ability to interpret geophysical signals influenced by the water cycle and providing a valuable tool for managing environmental and climatic impacts on subsurface water storage.
000007806 536__ $$aFED-tWIN2022-prf-2022-041 - SEPARATOR#2 program/$$cFED-tWIN2022-prf-2022-041 - SEPARATOR#2 program/$$fFED-tWIN2022-prf-2022-041 - SEPARATOR#2 program
000007806 594__ $$aNO
000007806 700__ $$aLecocq, Thomas
000007806 700__ $$aVanclooster, Marnik
000007806 773__ $$tEGU General Assembly 2025 - Vienna, Austria
000007806 8560_ $$fanita.saraswati@ksb-orb.be
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000007806 980__ $$aCPOSTER