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Seismic Imaging of the First 30-Meter Weathered Layer in a Karst Environment (H+, Poitiers)
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 25th European Meeting of Environmental and Engineering Geophysics, Sep 2019, Volume 2019, p.1 - 5
Abstract
Summary
Near-surface seismic methods are mainly used to determine the geometrical characteristics of the hydrosystems. Recent methodological advances suggest the high potential of these methods to investigate the mechanical properties subsurface by exploiting the full wealth of seismic records. Indeed, with vertical component seismic data recorded we can extract: (i) P-wave first arrival times to provide P-wave velocity section; (ii) surface-wave dispersion to estimate local 1D VS model, and (iii) a reflectivity section starting from the surface. All this information can be combined in order to better characterize the subsurface providing hybrid seismic sections.
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