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Fossil proxies of near-shore sea surface temperatures and seasonality from the late Neogene Antarctic shelf

Citation

Clark, NA and Williams, M and Hill, DJ and Quilty, PG and Smellie, JL and Zalasiewicz, J and Leng, MJ and Ellis, MA, Fossil proxies of near-shore sea surface temperatures and seasonality from the late Neogene Antarctic shelf, Naturwissenschaften, 100, (8) pp. 699-722. ISSN 0028-1042 (2013) [Refereed Article]

Copyright Statement

Copyright 2013 Springer-Verlag Berlin Heidelberg

DOI: doi:10.1007/s00114-013-1075-9

Abstract

We evaluate the available palaeontological and geochemical proxy data from bivalves, bryozoans, silicoflagellates, diatoms and cetaceans for sea surface temperature (SST) regimes around the nearshore Antarctic coast during the late Neogene. These fossils can be found in a number of shallow marine sedimentary settings from three regions of the Antarctic continent, the northern Antarctic Peninsula, the Prydz Bay region and the western Ross Sea. Many of the proxies suggest maximum spring-summer SSTs that are warmer than present by up to 5 C, which would result in reduced seasonal sea ice. The evidence suggests that the summers on the Antarctic shelf during the late Neogene experienced most of the warming, while winter SSTs were little changed from present. Feedbacks from changes in summer sea ice cover may have driven much of the late Neogene ocean warming seen in stratigraphic records. Synthesized late Neogene and earliest Quaternary Antarctic shelf proxy data are compared to the multi-model SST estimates of the Pliocene Model Intercomparison Project (PlioMIP) Experiment 2. Despite the fragmentary geographical and temporal context for the SST data, comparisons between the SST warming in each of the three regions represented in the marine palaeontological record of the Antarctic shelf and the PlioMIP climate simulations show a good concordance.

Item Details

Item Type:Refereed Article
Keywords:Antarctica . Palaeoclimate . Pliocene . Proxy . Climate models
Research Division:Earth Sciences
Research Group:Geology
Research Field:Marine Geoscience
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Earth Sciences
Author:Quilty, PG (Dr Pat Quilty)
ID Code:87900
Year Published:2013
Web of Science® Times Cited:6
Deposited By:Earth Sciences
Deposited On:2013-12-14
Last Modified:2017-11-02
Downloads:1 View Download Statistics

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