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	Provedor de dados ArchiMer (2) Autor Scourse, J. D. (2) Abbott, P. M. (1) Bourne, A. J. (1) Davies, S. M. (1) Hall, I. R. (1) Pearce, N. J. G. (1) Peck, V. L. (1) Purcell, C. S. (1) Zahn, R. (1) Mais... Palavra-chave Atlantic thermohaline circulation (1) Benthic carbon isotopes (1) Heinrich events (1) Iceland (1) Isochrons (1) Major and trace element geochemistry (1) Meltwater forcing (1) Palaeoclimate synchronisation (1) Tephrochronology (1) Volcanic ash (1) Mais... Tipo do documento Text (2) Ano 2016 (1) 2007 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Last glacial period cryptotephra deposits in an eastern North Atlantic marine sequence: Exploring linkages to the Greenland ice-cores ArchiMer Abbott, P. M.; Bourne, A. J.; Purcell, C. S.; Davies, S. M.; Scourse, J. D.; Pearce, N. J. G.. The establishment of a tephra framework for the Greenland ice-cores spanning the last glacial period, particularly between 25 and 45 Ica b2k, provides strong potential for precisely correlating other palaeoclimatic records to these key archives. Tephra-based synchronisation allows the relative timing of past climatic changes recorded within different depositional environments and potential causal mechanisms to be assessed. Recent studies of North Atlantic marine records have demonstrated the potential of tracing cryptotephra horizons in these sequences and the development of protocols now allows a careful assessment of the isochronous nature of such horizons. Here we report on tephrochronological investigations of a marine sequence retrieved from the Goban... Tipo: Text Palavras-chave: Tephrochronology; Palaeoclimate synchronisation; Volcanic ash; Isochrons; Iceland; Major and trace element geochemistry. Ano: 2016 URL: https://archimer.ifremer.fr/doc/00421/53274/83380.pdf Progressive reduction in NE Atlantic intermediate water ventilation prior to Heinrich events: Response to NW European ice sheet instabilities? ArchiMer Peck, V. L.; Hall, I. R.; Zahn, R.; Scourse, J. D.. We present high-resolution benthic delta C-13 records from intermediate water depth core site MD01-2461 ( 1153 m water depth), from the Porcupine Seabight, NE Atlantic, spanning 43 to 8 kyr B. P. At an average proxy time step of 160 +/- 56 years this core provides information on the linkage between records from the Portuguese Margin and high-latitude North Atlantic basin, allowing additional insights into North Atlantic thermohaline circulation (THC) variability during millennial-scale climatic events of the last glacial. Together, these records document both discrete and progressive reductions in Glacial North Atlantic Intermediate Water (GNAIW) formation preceding Heinrich ( H) events 1, 2, and 4, recorded through the apparent interchange of glacial... Tipo: Text Palavras-chave: Atlantic thermohaline circulation; Benthic carbon isotopes; Heinrich events; Meltwater forcing. Ano: 2007 URL: https://archimer.ifremer.fr/doc/00238/34945/33241.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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