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Sea-level fluctuations during the last glacial cycle

Siddall, M., Rohling, E., Almogi-Labin, A., Hemleben, C., Meischner, D., Schmelzer, I. and Smeed, D.A. (2003) Sea-level fluctuations during the last glacial cycle Nature, 423, (6942), pp. 853-858. (doi:10.1038/nature01690).

Record type: Article

Abstract

The last glacial cycle was characterized by substantial millennial-scale climate fluctuations1, 2, 3, 4, 5, but the extent of any associated changes in global sea level (or, equivalently, ice volume) remains elusive. Highstands of sea level can be reconstructed from dated fossil coral reef terraces6, 7, and these data are complemented by a compilation of global sea-level estimates based on deep-sea oxygen isotope ratios at millennial-scale resolution8 or higher1. Records based on oxygen isotopes, however, contain uncertainties in the range of 30 m, or 1 °C in deep sea temperature9, 10. Here we analyse oxygen isotope records from Red Sea sediment cores to reconstruct the history of water residence times in the Red Sea. We then use a hydraulic model of the water exchange between the Red Sea and the world ocean to derive the sill depth—and hence global sea level—over the past 470,000 years (470 kyr). Our reconstruction is accurate to within 12 m, and gives a centennial-scale resolution from 70 to 25 kyr before present. We find that sea-level changes of up to 35 m, at rates of up to 2 cm yr-1, occurred, coincident with abrupt changes in climate.

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Published date: 2003
Keywords: geology

Identifiers

Local EPrints ID: 1329
URI: http://eprints.soton.ac.uk/id/eprint/1329
ISSN: 0028-0836
PURE UUID: 1264304d-0e96-4eaa-aca0-df27e07b9cba
ORCID for E. Rohling: ORCID iD orcid.org/0000-0001-5349-2158

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Date deposited: 16 Apr 2004
Last modified: 17 Jul 2017 17:16

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Contributors

Author: M. Siddall
Author: E. Rohling ORCID iD
Author: A. Almogi-Labin
Author: C. Hemleben
Author: D. Meischner
Author: I. Schmelzer
Author: D.A. Smeed

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