caa a22 4500 445364971 CHVBK 20180317142927.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s11001-011-9118-0 doi (NATIONALLICENCE)springer-10.1007/s11001-011-9118-0 Submarine canyon morphologies in the Gulf of Palermo (Southern Tyrrhenian Sea) and possible implications for geo-hazard [Elektronische Daten] [Claudio Lo Iacono, Attilio Sulli, Mauro Agate, Valeria Lo Presti, Fabrizio Pepe, Raimondo Catalano] The continental shelf and the upper slope of the Gulf of Palermo (Southern Tyrrhenian Sea) in the depth interval ranging from 50 to 1,500m were mapped for the first time with Multi Beam echosounder and high resolution seismic. Seven submarine canyons are confined to the upper slope or indent the shelf-edge and enter the Palermo intraslope basin at a depth of around 1,300m. The canyons evolved through concurrent top-down turbiditic processes and bottom-up retrogressive mass failures. Most of the mass failure features of the area are related to canyon-shaping processes and only few of them are not confined to the upper slope. In general, these features probably do not represent a significant tsunami hazard along the coast. The geological element that controls the evolution of the canyons and induces sediment instability corresponds to the steep slope gradient, especially in the western sector of the Gulf, where the steepest canyons are located. The structural features mapped in the Palermo offshore contributed to the regulation of mass failure processes in the area, with direct faults and antiform structures coinciding with some of the canyon heads. Furthermore, the occurrence of pockmarks and highs that probably consist of authigenic carbonates above faulted and folded strata suggests a local relationship between structural control, fluid escape processes and mass failure. This paper presents a valuable high-resolution morphologic dataset of the Gulf of Palermo, which constitutes a reliable base for evaluating the geo-hazard potential related to slope failure in the area. Springer Science+Business Media B.V., 2011 Submarine canyons nationallicence Mass failure processes nationallicence Geo-hazard nationallicence Swath mapping nationallicence Southern Mediterranean nationallicence Lo Iacono Claudio Unidad de Tecnología Marina, UTM, CSIC, Paseo Marítimo de la Barceloneta 37-49, 08003, Barcelona, Spain aut Sulli Attilio Dipartimento di Geologia e Geodesia dell'Università di Palermo, Via Archirafi, 22, 90123, Palermo, Italy aut Agate Mauro Dipartimento di Geologia e Geodesia dell'Università di Palermo, Via Archirafi, 22, 90123, Palermo, Italy aut Lo Presti Valeria Dipartimento di Geologia e Geodesia dell'Università di Palermo, Via Archirafi, 22, 90123, Palermo, Italy aut Pepe Fabrizio Dipartimento di Geologia e Geodesia dell'Università di Palermo, Via Archirafi, 22, 90123, Palermo, Italy aut Catalano Raimondo Dipartimento di Geologia e Geodesia dell'Università di Palermo, Via Archirafi, 22, 90123, Palermo, Italy aut Marine Geophysical Research Springer Netherlands 32/1-2(2011-03-01), 127-138 0025-3235 32:1-2<127 2011 32 11001 https://doi.org/10.1007/s11001-011-9118-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11001-011-9118-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lo Iacono Claudio Unidad de Tecnología Marina, UTM, CSIC, Paseo Marítimo de la Barceloneta 37-49, 08003, Barcelona, Spain aut NATIONALLICENCE 700 1- Sulli Attilio Dipartimento di Geologia e Geodesia dell'Università di Palermo, Via Archirafi, 22, 90123, Palermo, Italy aut NATIONALLICENCE 700 1- Agate Mauro Dipartimento di Geologia e Geodesia dell'Università di Palermo, Via Archirafi, 22, 90123, Palermo, Italy aut NATIONALLICENCE 700 1- Lo Presti Valeria Dipartimento di Geologia e Geodesia dell'Università di Palermo, Via Archirafi, 22, 90123, Palermo, Italy aut NATIONALLICENCE 700 1- Pepe Fabrizio Dipartimento di Geologia e Geodesia dell'Università di Palermo, Via Archirafi, 22, 90123, Palermo, Italy aut NATIONALLICENCE 700 1- Catalano Raimondo Dipartimento di Geologia e Geodesia dell'Università di Palermo, Via Archirafi, 22, 90123, Palermo, Italy aut NATIONALLICENCE 773 0- Marine Geophysical Research Springer Netherlands 32/1-2(2011-03-01), 127-138 0025-3235 32:1-2<127 2011 32 11001 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer