Sea-surface tempertaure reconstruction of sediment cores from the Southeast Pacific ...
Applying the alkenone method, we estimated sea-surface temperatures (SSTs) for the past 33 kyr in two marine sediment cores recovered from the continental slope off mid-latitude Chile. The SST record shows an increase of 6.7°C from the last ice age (LIA) to the Holocene climatic optimum, while the t...
| Main Authors: | , , , , |
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| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
PANGAEA
2002
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.1594/pangaea.735767 https://doi.pangaea.de/10.1594/PANGAEA.735767 |
| Summary: | Applying the alkenone method, we estimated sea-surface temperatures (SSTs) for the past 33 kyr in two marine sediment cores recovered from the continental slope off mid-latitude Chile. The SST record shows an increase of 6.7°C from the last ice age (LIA) to the Holocene climatic optimum, while the temperature contrast between LIA and modern temperatures is only about 3.4°C. The timing and magnitude of the last deglacial warming in the ocean correspond to those observed in South American continental records. According to our SST record, the existence of a Younger Dryas equivalent cooling in the Southeast Pacific is much more uncertain than for the continental climate changes. A warming step of about 2.5°C observed between 8 and 7.5 cal kyr BP may have been linked to the early to mid-Holocene climatic transition (8.2-7.8 cal kyr BP), also described from equatorial Africa and Antarctica. In principal, variations in the latitudinal position of the Southern Pacific Westerlies are considered to be responsible for ... : Supplement to: Kim, Jung-Hyun; Schneider, Ralph R; Hebbeln, Dierk; Müller, Peter J; Wefer, Gerold (2002): Last deglacial sea-surface temperature evolution in the Southeast Pacific compared to climate changes on the Sourth American continent. Quaternary Science Reviews, 21(18-19), 2085-2097 ... |
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