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    Is subsurface geophysics as seismic and acoustic investigations a rescue to groundwater flow inversion? by Delay, Frederick, Mari, Jean-Luc, Porel, Gilles, Chabaux, François, Ackerer, Philippe

    Published 2022-10-01
    “…This notwithstanding, highly-resolved geophysical investigations bring new images of the subsurface.A 3-D seismic survey with shots and wave monitoring at the surface is carried out over a subsurface karstified reservoir located at the Hydrogeological Experimental Site (HES) of the University of Poitiers (France). Processing the 3-D data, in association with wave velocity calibration from vertical seismic profiles (VSP) recorded via geophones in wells, renders a 3-D velocity block. …”
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    An underground view of surface hydrology: what can piezometers tell us about river floods and droughts? by Pelletier, Antoine, Andréassian, Vazken

    Published 2023-01-01
    “…We propose a simple correlation analysis between yearly extrema of groundwater level and streamflow time series, performed on a large set of 107 catchments and 355 piezometers, located throughout mainland France. We show that it is possible to discriminate between aquifers that correlate only with high-flow events, only with low flows, with both types of events or with none of them. …”
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