Electrical resistivity tomography mapping of beachrocks: application to the island of Thassos (N. Greece) |
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Authors: | Psomiadis David Tsourlos Panagiotis and Albanakis Konstantinos |
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Institution: | (1) Department of Physical and Environmental Geography, School of Geology, Aristotle University of Thessaloniki, Thessaloniki, Greece;(2) Department of Geophysics, School of Geology, Aristotle University of Thessaloniki, Thessaloniki, Greece |
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Abstract: | Electrical resistivity tomography (ERT) technique is widely used in mapping subsurface electrical properties. In this study,
ERT was used to map a beachrock outcrop, extended both inland, under beach sediments, and seawards, on and under seafloor
sediments. Mapping of beachrock is considered important because it can help evaluate the lateral and vertical extend of the
formation. Fast and reliable mapping of beachrocks may contribute in several applications like engineering and construction,
coastal management, recreational reformation as well as scientific approaches like coastal evolution research, and palaeo-environmental
studies. The outcome of the survey was the mapping of the formation with centimeter precision, especially towards the sea.
Special processing was applied to the data in order to constrain the inversion procedure to include the known sea water layer. |
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