| Type |
Article |
| Date |
2002-12 |
| Language |
English |
| Author(s) |
Dolven Jk1, Cortese G2, Bjorklund Kr1 |
| Affiliation(s) |
1 : Univ Oslo, Museum Paleontol, N-0562 Oslo, Norway.
2 : Alfred Wegener Inst Polar & Marine Res, D-27515 Bremerhaven, Germany. |
| Source |
Paleoceanography (0883-8305) (Amer Geophysical Union), 2002-12 , Vol. 17 , N. 4 , P. 24.1-24.13 |
| DOI |
10.1029/2002PA000780 |
| WOS© Times Cited |
41 |
| Keyword(s) |
Radiolarians, paleoclimate, Late Pleistocene-Holocene, Norwegian Sea |
| Abstract |
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. |
| Full Text |
| File |
Pages |
Size |
Access |
| Publisher's official version |
13 |
1 MB |
Open access |
|
