Siegenthaler, U.; Eicher, U.; Oeschger, H.; Dansgaard, W. (1984). Lake sediments as continental δ18O records from the glacial/post-glacial transition. Annals of glaciology, 5, pp. 149-152. International Glaciological Society 10.3189/1984AoG5-1-149-152
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As in polar ice, 18O variations of precipitation are recorded in carbonate sediments formed in lakes (lake marl). We have analyzed many late-glacial profiles from Europe, There are strong l8O variations which coincide with well-known pollen zone boundaries and which indicate that abrupt, drastic climatic changes occurred in the late glacial period. These events are a major warming around 13 ka BP (pollen zone boundary Oldest Dryas/Bölling) and a marked cold phase between about 10.8 and 10 ka BP (Younger Dryas). Comparison of the δ18O records of European lake sediments and of Greenland ice cores reveal a striking similarity which indicates that climatic changes in the late glacial and early postglacial were parallel in Greenland and in Europe. First results from North American lake-sediment profiles do not exhibit similar δ18O variations. This pattern of climatic changes was probably caused by retreating and readvancing polar water in the high-latitude North Atlantic Ocean, as discussed by Ruddiman and McIntyre (1981).
Item Type: |
Conference or Workshop Item (Paper) |
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Division/Institute: |
08 Faculty of Science > Physics Institute > Climate and Environmental Physics |
Subjects: |
500 Science > 530 Physics |
ISSN: |
0260-3055 |
Publisher: |
International Glaciological Society |
Language: |
English |
Submitter: |
BORIS Import 2 |
Date Deposited: |
14 Oct 2021 10:08 |
Last Modified: |
14 Oct 2021 10:08 |
Publisher DOI: |
10.3189/1984AoG5-1-149-152 |
BORIS DOI: |
10.48350/158751 |
URI: |
https://boris.unibe.ch/id/eprint/158751 |