Orbital and Atmospheric Forcing of Western Antarctic Peninsula Climate in the Holocene: The TEX₈₆ Paleotemperature Record of Palmer Deep

Authors

Amelia E. Shevenell, University of WashingtonFollow
A. E. Ingalls, University of Washington
E. W. Domack, Hamilton College

Document Type

Conference Proceeding

Publication Date

2007

Digital Object Identifier (DOI)

https://doi.org/10.3133/of2007-1047

Abstract

A detailed TEX₈₆ sea surface temperature record is presented from a well-dated hemipelagic sedimentary sequence drilled in Palmer Deep, on the western Antarctic Peninsula continental margin (ODP Hole 1098B; 1010 m). To test the regional utility of the TEX₈₆ proxy, surface sediment samples with paired CTD casts were acquired and results show the promise of TEX₈₆ in this region. Down core TEX₈₆-derived temperatures at Site 1098 range between 0 and 6°C during the Holocene (0-12 ky). A long-term Holocene cooling of ~3°C is suggested and is punctuated by millennial scale temperature variability. The TEX₈₆ temperature record from Palmer Deep is consistent with temperature trends recorded in west Antarctic ice cores and southeast Pacific marine sediments. This observation is consistent with hypotheses that favor atmospheric (via the Southern Hemisphere westerly winds), not thermohaline, control over the hydrography of Palmer Deep.

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No

Citation / Publisher Attribution

Orbital and Atmospheric Forcing of Western Antarctic Peninsula Climate in the Holocene: The TEX₈₆ Paleotemperature Record of Palmer Deep, in A. K. Cooper, C. R. Raymond & the 10th ISAES Editorial Team (Eds.), Online Proceedings of the 10th ISAES X, USGS Open-File Report 2007-1047, Extended Abstract 131, 4 p.

Link to publisher website: https://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea131.pdf

Scholar Commons Citation

Shevenell, Amelia E.; Ingalls, A. E.; and Domack, E. W., "Orbital and Atmospheric Forcing of Western Antarctic Peninsula Climate in the Holocene: The TEX₈₆ Paleotemperature Record of Palmer Deep" (2007). Marine Science Faculty Publications. 582.
https://digitalcommons.usf.edu/msc_facpub/582