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Geomorphic evolution of the Malta Escarpment and implications for the Messinian evaporative drawdown in the eastern Mediterranean Sea ArchiMer
Micallef, Aaron; Camerlenghi, Angelo; Georgiopoulou, Aggeliki; Garcia-castellanos, Daniel; Gutscher, Marc-andre; Lo Iacono, Claudio; Huvenne, Veerle A. I.; Mountjoy, Joshu J.; Paull, Charles K.; Le Bas, Timothy; Spatola, Daniele; Facchin, Lorenzo; Accettella, Daniela.
Carbonate escarpments are submarine limestone and dolomite cliffs that have been documented in numerous sites around the world. Their geomorphic evolution is poorly understood due to difficulties in assessing escarpment outcrops and the limited resolution achieved by geophysical techniques across their steep topographies. The geomorphic evolution of carbonate escarpments in the Mediterranean Sea has been influenced by the Messinian salinity crisis (MSC). During the MSC (5.97-533 Ma), the Mediterranean Sea became a saline basin due to a temporary restriction of the Atlantic-Mediterranean seaway, resulting in the deposition of more than one million cubic kilometres of salt. The extent and relative chronology of the evaporative drawdown phases associated to...
Tipo: Text Palavras-chave: Malta Escarpment; Geomorphic evolution; Submarine canyon; Palaeoshoreline; Sea level drawdown; Messinian salinity crisis.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00485/59686/83482.pdf
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Marine Litter Distribution and Density in European Seas, from the Shelves to Deep Basins ArchiMer
Pham, Christopher K.; Ramirez-llodra, Eva; Alt, Claudia H. S.; Amaro, Teresa; Bergmann, Melanie; Canals, Miquel; Company, Joan B.; Davies, Jaime; Duineveld, Gerard; Galgani, Francois; Howell, Kerry; Huvenne, Veerle A. I.; Isidro, Eduardo; Jones, Daniel O. B.; Lastras, Galderic; Morato, Telmo; Gomes-pereira, Jose Nuno; Purser, Autun; Stewart, Heather; Tojeira, Ines; Tubau, Xavier; Van Rooij, David; Tyler, Paul A..
Anthropogenic litter is present in all marine habitats, from beaches to the most remote points in the oceans. On the seafloor, marine litter, particularly plastic, can accumulate in high densities with deleterious consequences for its inhabitants. Yet, because of the high cost involved with sampling the seafloor, no large-scale assessment of distribution patterns was available to date. Here, we present data on litter distribution and density collected during 588 video and trawl surveys across 32 sites in European waters. We found litter to be present in the deepest areas and at locations as remote from land as the Charlie-Gibbs Fracture Zone across the Mid-Atlantic Ridge. The highest litter density occurs in submarine canyons, whilst the lowest density can...
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Ano: 2014 URL: http://archimer.ifremer.fr/doc/00204/31505/29903.pdf
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The Magellan mound province in the Porcupine Basin ArchiMer
Huvenne, Veerle A. I.; Bailey, W. R.; Shannon, P. M.; Naeth, J; Di Primio, R.; Henriet, J. P.; Horsfield, B.; De Haas, H.; Wheeler, A; Olu, Karine.
The Magellan mound province is one of the three known provinces of carbonate mounds or cold-water coral banks in the Porcupine Seabight, west of Ireland. It has been studied in detail using a large and varied data set: 2D and 3D seismic data, sidescan sonar imagery and video data collected during ROV deployment have been used to describe the mounds in terms of origin, growth processes and burial. The aim of this paper is to present the Magellan mounds and their setting in an integrated, holistic way. More than 1,000 densely spaced and mainly buried mounds have been identified in the area. They all seem to be rooted on one seismic reflection, suggesting a sudden mound start-up. Their size and spatial distribution characteristics are presented, together with...
Tipo: Text Palavras-chave: Numerical basin modelling; Fault analysis; Mound morphology; Spatial distribution; Porcupine Basin; Cold water corals; Carbonate mounds.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-2312.pdf
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