Submarine Landslides and Contourite Drifts Along the Pianosa Ridge (Corsica Trough, Mediterranean Sea)

Author(s):  
A. Cattaneo ◽  
G. Jouet ◽  
S. Charrier ◽  
E. Théreau ◽  
V. Riboulot
2010 ◽  
Vol 278 (1-4) ◽  
pp. 19-30 ◽  
Author(s):  
E. Martorelli ◽  
F. Falcini ◽  
E. Salusti ◽  
F.L. Chiocci

2020 ◽  
Vol 500 (1) ◽  
pp. 173-193 ◽  
Author(s):  
Ricarda Gatter ◽  
Michael A. Clare ◽  
James E. Hunt ◽  
Millie Watts ◽  
B. N. Madhusudhan ◽  
...  

AbstractContourite drifts are sediment deposits formed by ocean bottom currents on continental slopes worldwide. Although it has become increasingly apparent that contourites are often prone to slope failure, the physical controls on slope instability remain unclear. This study presents high-resolution sedimentological, geochemical and geotechnical analyses of sediments to better understand the physical controls on slope failure that occurred within a sheeted contourite drift within the Faroe–Shetland Channel. We aim to identify and characterize the failure plane of the late Quaternary landslide (the AFEN Slide), and explain its location within the sheeted drift stratigraphy. The analyses reveal abrupt lithological contrasts characterized by distinct changes in physical, geochemical and geotechnical properties. Our findings indicate that the AFEN Slide likely initiated along a distinct lithological interface, between overlying sandy contouritic sediments and softer underlying mud-rich sediments. These lithological contrasts are interpreted to relate to climatically controlled variations in sediment input and bottom current intensity. Similar lithological contrasts are likely to be common within contourite drifts at many other oceanic gateways worldwide; hence our findings are likely to apply more widely. As we demonstrate here, recognition of such contrasts requires multi-disciplinary data over the depth range of stratigraphy that is potentially prone to slope failure.


2017 ◽  
Vol 209 (1) ◽  
pp. 266-281 ◽  
Author(s):  
Mathieu Rodriguez ◽  
Clément Maleuvre ◽  
Martin Jollivet-Castelot ◽  
Elia d'Acremont ◽  
Alain Rabaute ◽  
...  

2020 ◽  
Vol 33 ◽  
pp. 23
Author(s):  
Danilo Malara ◽  
Pietro Battaglia ◽  
Pierpaolo Consoli ◽  
Erika Arcadi ◽  
Simonepietro Canese ◽  
...  

The Strait of Messina is located at the centre of the Mediterranean Sea and is considered a biodiversity hotspot and an obligatory seasonal passage for different pelagic species such as sharks, marine mammals, and billfishes. For the first time, in the Strait of Messina, our research group tagged a Mediterranean spearfish (Tetrapturus belone) using a pop-up satellite archival tag (PSAT). The observation of abiotic parameters (depth, light, and temperature) recorded by the PSAT confirmed that the tagged specimen was predated after about nine hours. The tag was then regurgitated 14 days after the tag deployment date. The analysis of collected data seems to indicate that the predator may be an ectothermic shark, most likely the bluntnose sixgill shark (Hexanchus griseus).


2015 ◽  
Vol 116 (1) ◽  
pp. 69-74 ◽  
Author(s):  
L Pérez ◽  
ML Abarca ◽  
F Latif-Eugenín ◽  
R Beaz-Hidalgo ◽  
MJ Figueras ◽  
...  

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