Data/hora: 13/06/2024 12:53:18

Provedor de dados: | 5
País: | France
Título: | A high-resolution radiolarian-derived paleotemperature record for the Late Pleistocene-Holocene in the Norwegian Sea
Autores: | Dolven, Jk; Cortese, G; Bjorklund, Kr.
Data: | 2002-12
Ano: | 2002
Palavras-chave: | Radiolarians; Paleoclimate; Late Pleistocene-Holocene; Norwegian Sea.
Resumo: | Polycystine radiolarians are used to reconstruct summer sea surface temperatures (SSSTs) for the Late Pleistocene-Holocene (600-13,400 C-14 years BP) in the Norwegian Sea. At 13,200 C-14 years BP, the SSST was close to the average Holocene SSST (similar to12degreesC). It then gradually dropped to 7.1degreesC in the Younger Dryas. Near the Younger Dryas-Holocene transition (similar to10,000 C-14 years BP), the SSST increased 5degreesC in about 530 years. Four abrupt cooling events, with temperature drops of up to 2.1degreesC, are recognized during the Holocene: at 9340, 7100 ("8200 calendar years event''), 6400 and 1650 C-14 years BP. Radiolarian SSSTs and the isotopic signal from the GISP2 ice core are strongly coupled, stressing the importance of the Norwegian Sea as a mediator of heat/precipitation exchange between the North Atlantic, the atmosphere, and the Greenland ice sheet. Radiolarian and diatom-derived SSSTs display similarities, with the former not showing the recently reported Holocene cooling trend.
Tipo: | Text
Idioma: | Inglês

Identificador:

https://archimer.ifremer.fr/doc/00223/33384/31894.pdf

DOI:10.1029/2002PA000780

https://archimer.ifremer.fr/doc/00223/33384/

Editor: | Amer Geophysical Union
Formato: | application/pdf
Fonte: | Paleoceanography (0883-8305) (Amer Geophysical Union), 2002-12 , Vol. 17 , N. 4 , P. 24.1-24.13

Fonte:

Copyright 2002 by the American Geophysical Union.

info:eu-repo/semantics/openAccess

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