10.1594/PANGAEA.735166
Lamy, Frank
Frank
Lamy
0000-0001-5952-1765
Rühlemann, Carsten
Carsten
Rühlemann
Hebbeln, Dierk
Dierk
Hebbeln
0000-0001-5099-6115
Wefer, Gerold
Gerold
Wefer
0000-0002-6803-2020
Temperature and salinity reconstruction for sediment core GeoB3313-1
PANGAEA
2002
GHOST
Gravity corer (Kiel type)
SO102/1
Sonne
Geosciences, University of Bremen (GeoB)
1995-05-12T00:00:00
en
Supplementary Publication Series of Datasets
10.1029/2001PA000727
3 datasets
application/zip
Creative Commons Attribution 3.0 Unported
We reconstructed changes of temperature, salinity, and productivity within the southern Peru-Chile Current during the last 8000 years from a high-resolution sediment core recovered at 41°S using alkenones, isotope ratios of planktic foraminifera, biogenic opal, and organic carbon. Paleotemperatures and paleosalinities reached maximum values at ~5500 years ago and thereafter declined to modern values, whereas paleoproductivity continuously increased throughout the last 8000 years. We ascribe these long-term Holocene trends primarily to latitudinal shifts of the Antarctic Circumpolar Current (ACC). The concurrence with shifts in the position of the Southern Westerlies points to a common response of atmospheric and oceanographic circulation patterns off southern Chile. Millennial- to centennial-scale fluctuations of paleotemperatures and paleosalinities, on the other hand, lag displacements in the position of the Southern Westerlies but reveal a significant correlation to short-term temperature changes in Antarctica, indicating a high-latitude control of the ACC at these timescales.
For chronostratigraphy and iron data see Lamy et al. (2001) datasets: doi:10.1594/PANGAEA.735164
Supplement to: Lamy, Frank; Rühlemann, Carsten; Hebbeln, Dierk; Wefer, Gerold (2002): High- and low-latitude climate control on the position of the southern Peru-Chile Current during the Holocene. Paleoceanography, 17(2), 1028
-74.45000000000002
-41.0
South-East Pacific