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Historical winter sea-ice concentration data estimates utilising a diatom proxy for marine sediment core SO136-111

Created 25/06/2017

Updated 11/08/2023

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The purpose of this study was to re-evaluate the paleo sea-ice record for marine sediment core SO136-111. We applied a generalized additive model, and compared the estimates from GAM with those estimates derived from weighted averaging partial least squares, the Imbrie and Kipp Transfer function and the Modern Analogue Technique. We provide the first record of paleo winter sea-ice concentration data for core SO136-111, based on a diatom proxy. Core SO136-111 provides a record for winter sea-ice concentrations over the last 220 kyr BP.

Gravity core SO136-111 (56°40'S, 160°14'E, water depth 3912 m) was retrieved from the Emerald Basin, in the East Indian sector of the Southern Ocean south of the modern Antarctic Polar Front. The core was retrieved in 1998 during the TASQWA cruise on board the FS SONNE.

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Title Historical winter sea-ice concentration data estimates utilising a diatom proxy for marine sediment core SO136-111
Language English
Licence Creative Commons Attribution 2.5 Australia
Landing Page https://data.gov.au/data/dataset/a2a9e24d-9981-4772-b745-15c6c717add8
Contact Point
Department of Biological Sciences, Macquarie University
alexanderjferry@gmail.com
Reference Period 25/06/2017
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    160.23,
    -56.67
  ],
  "type": "Point"
}
Data Portal Data.gov.au