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Summary The Hollin Hill site has been used as a landslide research site to test different geophysical characterization and monitoring methods, to assess temporal and spatial stability. This abstract presents the use of surface waves content and its dispersive properties, in the context of moisture induced landslide monitoring of seasonal variations, using 16 seismic datasets acquired between October 2016 and August 2019. For each dataset, a 2D pseudo section of the landslide is assembled, and the relative difference between each dataset is calculated. The statistical distribution of each difference indicates a seasonal variation control or a soil moisture control on surface waves velocity measurements with time. Specifically, this approach shows potential for monitoring seasonal variability in elastic properties linked to changes in soil moisture, which has a direct impact on periods of more active slope movement. These results are currently being investigated further and will be discussed in future work. |
