Assessment and calibration of TEX86 paleothermometry in the Sea of Okhotsk and sub-polar North Pacific region: implications for paleoceanography

Seki, Osamu, Bendle, James A., Harada, Naomi, Kobayashi, Madoka, Sawada, Ken, Moossen, Heiko, Inglis, Gordon N., Nagao, Seiya and Sakamoto, Tatsuhiko (2014) Assessment and calibration of TEX86 paleothermometry in the Sea of Okhotsk and sub-polar North Pacific region: implications for paleoceanography. Progress in Oceanography, 126, 254-266. (doi:10.1016/j.pocean.2014.04.013).

Abstract

We measured TEX86 indices in surface sediments and sediment cores from marginal seas and open ocean sites in the North Pacific to test the accuracy of TEX86 paleothermometry in the region. Application of the global core top TEX86L and TEX86H calibrations in the Sea of Okhotsk and northern North Pacific sub-polar region results in over- and under-estimations of TEX86 derived SSTs in surface sediments in deep-ocean and coastal areas, respectively. Further challenges apparent in applying TEX86L and TEX86H in late Quaternary sediment cores from the Okhotsk Sea (MR06-04 PC7) and northwestern Pacific (MR00-K03 PC1) are unrealistically warm Holocene mean annual reconstructed temperatures (TEX86L) and excessively cold Glacial temperatures (TEX86H), compared with other high-latitude records and climate models. Application of a calibration based on a sub-set of deep (

This record has no associated files available for download.

Contributors

Author: Gordon N. Inglis

Download statistics