caa a22 4500 445365137 CHVBK 20180317142928.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s11001-011-9138-9 doi (NATIONALLICENCE)springer-10.1007/s11001-011-9138-9 The Bulgheria canyon-fan: a small-scale proximal system in the eastern Tyrrhenian Sea (Italy) [Elektronische Daten] [Francesca Budillon, Alessandro Conforti, Renato Tonielli, Giovanni De Falco, Gabriella Di Martino, Sara Innangi, Ennio Marsella] The Bulgheria canyon-fan system in the eastern Tyrrhenian Sea displays well-developed, small-scale, fluvial-like features and has formed alongside the northern slope of the Sapri peri-Tyrrhenian basin. This study reveals, for the first time, the morphology and course of the present-day system as well as the buried elements based on a Digital Terrain Model and high-resolution seismic profiles interpretation. Two adjacent canyons (Infreschi and Luna) originate in the Cilento outer shelf at a short distance from each other and feed an intraslope basin fan through two main sub-parallel channels that run about 12 and 8km, respectively. Channel and levee development seems to be controlled primarily by the local slope gradient and by Coriolis forces that induce a faster vertical growth of the right-side features, as is often observed in the Northern Hemisphere. Centrifugal forces, on the other hand, have induced episodic flow-stripping at the meander loops and bends, causing local destruction of the main channel levees rather than new levee growth at the outer bends. Overbank deposits are associated with overspill turbidite deposition in the mid fan where a topographic constraint occurs, whereas large-sediment, low-angle wave fields are mainly developed on the outer fan. Buried features and relict morphologies suggest that the Infreschi channel experienced at least two phases of re-incision since the final stages of the middle Pleistocene. Local re-adjustment of outer lobe growth due to channel avulsion and meander abandonment is possibly a consequence of relative base-level fluctuations. The sedimentary record of the mid and outer fan includes outrun mass wasting deposits from extensive failures of the Sapri slope. Indeed, a marked scar is present on the eastern side of the modern outer lobe that indicates the persistency of mass flow passages up to recent times. In addition to the environmental factors that are currently considered to cause canyon formation on the shelf margin, this study proposes the possibility that the head canyon branch close to the mainland was incised by massive and persistent underground freshwater flow from the adjacent aquifer when the sea-level was lower than at present. Springer Science+Business Media B.V., 2011 Morphometry of canyon-channel system nationallicence Submarine spring nationallicence Middle-late Pleistocene nationallicence Sapri Basin nationallicence Eastern Tyrrhenian Sea nationallicence Budillon Francesca Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche (National Research Council of Italy), Calata Porta di Massa, 80, 80133, Naples, Italy aut Conforti Alessandro Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche (National Research Council of Italy), Calata Porta di Massa, 80, 80133, Naples, Italy aut Tonielli Renato Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche (National Research Council of Italy), Calata Porta di Massa, 80, 80133, Naples, Italy aut De Falco Giovanni Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche (National Research Council of Italy), Calata Porta di Massa, 80, 80133, Naples, Italy aut Di Martino Gabriella Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche (National Research Council of Italy), Calata Porta di Massa, 80, 80133, Naples, Italy aut Innangi Sara Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche (National Research Council of Italy), Calata Porta di Massa, 80, 80133, Naples, Italy aut Marsella Ennio Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche (National Research Council of Italy), Calata Porta di Massa, 80, 80133, Naples, Italy aut Marine Geophysical Research Springer Netherlands 32/1-2(2011-03-01), 83-97 0025-3235 32:1-2<83 2011 32 11001 https://doi.org/10.1007/s11001-011-9138-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11001-011-9138-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Budillon Francesca Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche (National Research Council of Italy), Calata Porta di Massa, 80, 80133, Naples, Italy aut NATIONALLICENCE 700 1- Conforti Alessandro Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche (National Research Council of Italy), Calata Porta di Massa, 80, 80133, Naples, Italy aut NATIONALLICENCE 700 1- Tonielli Renato Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche (National Research Council of Italy), Calata Porta di Massa, 80, 80133, Naples, Italy aut NATIONALLICENCE 700 1- De Falco Giovanni Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche (National Research Council of Italy), Calata Porta di Massa, 80, 80133, Naples, Italy aut NATIONALLICENCE 700 1- Di Martino Gabriella Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche (National Research Council of Italy), Calata Porta di Massa, 80, 80133, Naples, Italy aut NATIONALLICENCE 700 1- Innangi Sara Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche (National Research Council of Italy), Calata Porta di Massa, 80, 80133, Naples, Italy aut NATIONALLICENCE 700 1- Marsella Ennio Istituto per l'Ambiente Marino Costiero, Consiglio Nazionale delle Ricerche (National Research Council of Italy), Calata Porta di Massa, 80, 80133, Naples, Italy aut NATIONALLICENCE 773 0- Marine Geophysical Research Springer Netherlands 32/1-2(2011-03-01), 83-97 0025-3235 32:1-2<83 2011 32 11001 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer