Geophysical and hydrogeological investigations are essential for the characterization of aquifers. Drawing on their extensive experience in geophysical and hydrogeological studies, the authors demonstrate how conventional seismic methods, commonly used in exploration and reservoir imaging, can be adapted to hydrogeological investigations, particularly in karstified geological formations. The Dogger limestone of the Poitou Threshold serves as a compelling case study. The book offers a practical guide on how hydrogeology and geophysics together contribute to developing robust regional groundwater flow models. It showcases how an integrated, multidisciplinary geoscientific approach—combining geophysical, hydrogeological, and stratigraphic analyses—can significantly enhance conceptual models of groundwater flow in fractured and karstified media. Beginning with a geological overview of the Poitou Threshold, the book provides a detailed synthesis of the Middle Jurassic limestone stratigraphy, before presenting the Hydrogeological Experimental Site. Subsequent chapters explore the geophysical and hydrogeological methods employed, emphasizing how a Multiphysics approach can be used to delineate the geometry of karstic horizons. The book highlights the importance of high-resolution stratigraphic analysis —through core sampling and optical televiewer imaging from open-hole drilling— in mapping the distribution of karstic zones and refining flow models.
More than just a methodological reference, this work offers valuable insights into the sustainable management of drinking water resources, stressing the critical role of borehole stratigraphy and well completion design.
In addition to the detailed case study of the Dogger limestone, the authors provide a replicable framework for seismic and stratigraphic characterization applicable to a wide range of hydrogeological and reservoir studies.