caa a22 4500 605454221 CHVBK 20210128100206.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s10064-014-0683-8 doi (NATIONALLICENCE)springer-10.1007/s10064-014-0683-8 Borehole seismic surveys for the mechanical characterization of a calcarenite cliff in the area of Ispica (southern Sicily) [Elektronische Daten] [S. Imposa, G. Mele, M. Corrao, G. Coco] In this study, we investigate the mechanical properties of the substrate underlying the historical Franciscan Friars Minor convent of Ispica (southern Sicily). The convent, where new fractures recently occurred, is located on top of a calcarenite cliff formed along one of the planes of the regional Pozzallo-Ispica-Rosolini normal fault system. Taking advantage of three existing mechanical drillings 30m deep, we have carried out downhole tests and a seismic tomography survey in uphole configuration. The downhole tests provided vertical profiles of P-wave and S-wave velocities measured at 1m depth intervals, from which we have derived the basic elastodynamic and seismic parameters, while the tomography survey imaged vertical sections of P-wave velocity across the cliff. The results highlight variable mechanical properties of the subsoil and a step-like pattern of velocity variations parallel to the cliff face that could suggest the occurrence of secondary ruptures related to the main Ispica fault. Springer-Verlag Berlin Heidelberg, 2014 Downhole tests nationallicence Uphole seismic tomography nationallicence Ispica nationallicence Sicily nationallicence Imposa S. Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Sezione di Scienze della Terra, Università degli Studi di Catania, Corso Italia 57, 95129, Catania, Italy aut Mele G. Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, 00143, Rome, Italy aut Corrao M. Geocheck S.r.l., Via Stazzone 45, 95025, Aci Sant'Antonio, CT, Italy aut Coco G. Geocheck S.r.l., Via Stazzone 45, 95025, Aci Sant'Antonio, CT, Italy aut Bulletin of Engineering Geology and the Environment Springer Berlin Heidelberg 74/3(2015-08-01), 971-980 1435-9529 74:3<971 2015 74 10064 https://doi.org/10.1007/s10064-014-0683-8 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10064-014-0683-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Imposa S. Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Sezione di Scienze della Terra, Università degli Studi di Catania, Corso Italia 57, 95129, Catania, Italy aut NATIONALLICENCE 700 1- Mele G. Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, 00143, Rome, Italy aut NATIONALLICENCE 700 1- Corrao M. Geocheck S.r.l., Via Stazzone 45, 95025, Aci Sant'Antonio, CT, Italy aut NATIONALLICENCE 700 1- Coco G. Geocheck S.r.l., Via Stazzone 45, 95025, Aci Sant'Antonio, CT, Italy aut NATIONALLICENCE 773 0- Bulletin of Engineering Geology and the Environment Springer Berlin Heidelberg 74/3(2015-08-01), 971-980 1435-9529 74:3<971 2015 74 10064