Journal cover Journal topic
Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
Nat. Hazards Earth Syst. Sci., 15, 843-852, 2015
https://doi.org/10.5194/nhess-15-843-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
13 Apr 2015
Magnetotelluric investigation in the High Agri Valley (southern Apennine, Italy)
M. Balasco1, A. Giocoli1,2, S. Piscitelli1, G. Romano3, A. Siniscalchi3, T. A. Stabile1, and S. Tripaldi3 1IMAA, Istituto di Metodologie per l'Analisi Ambientale, CNR, C.da S. Loja, Z.I., 85050, Tito Scalo (PZ), Italy
2ENEA, Rome, Italy
3Dipartimento di Scienze della Terra e Geoambientali, Università di Bari, Campus Universitario, Via Orabona 4, 70125 Bari, Tito Scalo (PZ), Italy
Abstract. In this paper we present the result of a magnetotelluric (MT) investigation carried out across the High Agri Valley (HAV), southern Italy. Several MT soundings were carried out in order to obtain a ~15 km long 2-D resistivity model with an investigation depth of ~10 km. The main aim was to provide valuable data on the geological and structural setting of the HAV. The MT model was compared with pre-existing geological, geophysical and seismic data. The MT model can be schematized as a superposition of three stack lateral varying layers with different thickness and resistivity values: a surficial low–medium resistivity layer associated with the Quaternary deposits and to the allochthonous units; and a deeper high resistivity layer related to the Apulia Platform, separated by a thin layer connected to the mélange zone and to the Pliocene terrigenous marine deposits. Sharp lateral resistivity variations are interpreted as faults that, on the basis of accurate focal mechanism computations, display normal-faulting kinematics.

Citation: Balasco, M., Giocoli, A., Piscitelli, S., Romano, G., Siniscalchi, A., Stabile, T. A., and Tripaldi, S.: Magnetotelluric investigation in the High Agri Valley (southern Apennine, Italy), Nat. Hazards Earth Syst. Sci., 15, 843-852, https://doi.org/10.5194/nhess-15-843-2015, 2015.
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