http://www.cnr.it/ontology/cnr/individuo/prodotto/ID6804

The Bulgheria Canyon-fan: a small-scale proximal system in the eastern Tyrrhenian Sea (Italy) (Articolo in rivista)

Type

Articolo in rivista (Classe)
Prodotto della ricerca (Classe)

Label

The Bulgheria Canyon-fan: a small-scale proximal system in the eastern Tyrrhenian Sea (Italy) (Articolo in rivista) (literal)

Anno

2011-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1007/s11001-011-9138-9 (literal)

Alternative label

F. Budillon; A. Conforti; R. Tonielli; G. De Falco; G. Di Martino; S. Innangi; E. Marsella; (2011)
The Bulgheria Canyon-fan: a small-scale proximal system in the eastern Tyrrhenian Sea (Italy)
in Marine geophysical researches; SPRINGER, DORDRECHT (Paesi Bassi)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

F. Budillon; A. Conforti; R. Tonielli; G. De Falco; G. Di Martino; S. Innangi; E. Marsella; (literal)

Pagina inizio

83 (literal)

Pagina fine

97 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

32 (literal)

Rivista

Marine geophysical researches (Rivista)

Note

ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

F. Budillon; A. Conforti; R. Tonielli; G. De Falco; G. Di Martino; S. Innangi; E. Marsella; IAMC CNR NApoli (literal)

Titolo

The Bulgheria Canyon-fan: a small-scale proximal system in the eastern Tyrrhenian Sea (Italy) (literal)

Abstract

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 8 km, 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 baselevel 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. (literal)

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