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Identifying Sedimentary Facies in Mediterranean Ephemeral Channels (MEC) by Using of Electrical Resistivity Tomography
- 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
The effects of Climate Change and the intensification of land use on the territory show the importance of Mediterranean ephemeral channels. The morphological adjustments of this type of system are mainly controlled by the magnitude and frequency of hydrological events.
The primary objective of this case of study is to analyse the morphological and systemic adjustments produced in the MECs, as a consequence of Climate Change and new environmental scenarios. To analyse these effects, a small semi-arid Mediterranean basin located in the Southeastern Iberian Peninsula, has been chosen. The analysis of geomorphological evolution carried out in several narrowing of this basin has been made from the identification of the structure and sedimentary facies associated with the geoformations of the fluvial bed. For each cross-section of the bed chosen as the control section, geoelectric profiles will be made to be correlated with stratigraphic data of shallow depth mechanical boreholes, from which the tomographies can be calibrated. The use of both techniques will allow knowing the texture and sedimentary structure of the bed, which will help to detect changes in the processes of erosion, transport and sedimentation produced in recent periods, as well as determine the depth of the rocky substrate.
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