Consulta: creatorFacets:"Rogerson, M."
Registros recuperados: 3
Data/hora: 04/06/2024 06:34:54

Paleoceanography of the Atlantic-Mediterranean exchange: overview and first quantitative assessment of climatic forcing
Provedor de dados: 5
Autores: Rogerson, M.; Rohling, E. J.; Bigg, G. R.; Ramirez, J.
The Mediterranean Sea provides a major route for heat and freshwater loss from the North Atlantic and thus is an important cause of the high density of Atlantic waters. In addition to the traditional view that loss of fresh water via the Mediterranean enhances the general salinity of the North Atlantic, and the interior of the eastern North Atlantic in particular, it should be noted that Mediterranean water outflowing at Gibraltar is in fact cooler than compensating inflowing water. The consequence is that the Mediterranean is also a region of heat loss from the Atlantic and contributes to its large-scale cooling. Uniquely, this system can be understood physically via the constraints placed on it by a single hydraulic structure: the Gibraltar exchange....
Tipo: Text
Ano: 2012
URL: https://archimer.ifremer.fr/doc/00265/37655/36910.pdf

Enhanced Mediterranean-Atlantic exchange during Atlantic freshening phases
Provedor de dados: 5
Autores: Rogerson, M.; Colmenero-hidalgo, E.; Levine, R. C.; Rohling, E. J.; Voelker, A. H. L.; Bigg, G. R.; Schoenfeld, J.; Cacho, I.; Sierro, F. J.; Lowemark, L.; Reguera, M. I.; De Abreu, L.; Garrick, K.
The Atlantic-Mediterranean exchange of water at Gibraltar represents a significant heat and freshwater sink for the North Atlantic and is a major control on the heat, salt and freshwater budgets of the Mediterranean Sea. Consequently, an understanding of the response of the exchange system to external changes is vital to a full comprehension of the hydrographic responses in both ocean basins. Here, we use a synthesis of empirical (oxygen isotope, planktonic foraminiferal assemblage) and modeling (analytical and general circulation) approaches to investigate the response of the Gibraltar Exchange system to Atlantic freshening during Heinrich Stadials (HSs). HSs display relatively flat W-E surface hydrographic gradients more comparable to the Late Holocene...
Tipo: Text
Palavras-chave: Atlantic; Mediterranean; Gibraltar; Heinrich Event; Last Glacial Maximum; Mediterranean Outflow.
Ano: 2010
URL: https://archimer.ifremer.fr/doc/00231/34189/32775.pdf

A dynamic explanation for the origin of the western Mediterranean organic-rich layers
Provedor de dados: 5
Autores: Rogerson, M.; Cacho, I.; Jimenez-espejo, F.; Reguera, M. I.; Sierro, F. J.; Martinez-ruiz, F.; Frigola, J.; Canals, M.
The eastern Mediterranean sapropels are among the most intensively investigated phenomena in the paleoceanographic record, but relatively little has been written regarding the origin of the equivalent of the sapropels in the western Mediterranean, the organic-rich layers (ORLs). ORLs are recognized as sediment layers containing enhanced total organic carbon that extend throughout the deep basins of the western Mediterranean and are associated with enhanced total barium concentration and a reduced diversity (dysoxic but not anoxic) benthic foraminiferal assemblage. Consequently, it has been suggested that ORLs represent periods of enhanced productivity coupled with reduced deep ventilation, presumably related to increased continental runoff, in close...
Tipo: Text
Palavras-chave: Sapropel; Mediterranean; Sea level; Paleoceanography; Circulation.
Ano: 2008
URL: https://archimer.ifremer.fr/doc/00237/34825/33303.pdf