Estimation of sea surface temperature from sediment core PS1768-8, supplement to: Zielinski, Ulrich; Gersonde, Rainer; Sieger, Rainer; Fütterer, Dieter K (1998): Quaternary surface water temperature estimations: calibration of a diatom transfer funtion for the Southern Ocean. Paleoceanography, 13(4), 365-383

DOI

The quantitative diatom analysis of 218 surface sediment samples recovered in the Atlantic and western Indian sector of the Southern Ocean is used to define a base of reference data for paleotemperature estimations from diatom assemblages using the Imbrie and Kipp transfer function method. The criteria which justify the exclusion of samples and species out of the raw data set in order to define a reference database are outlined and discussed. Sensitivity tests with eight data sets were achieved evaluating the effects of overall dominance of single species, different methods of species abundance ranking, and no-analog conditions (e.g., Eucampia Antarctica) on the estimated paleotemperatures. The defined transfer functions were applied on a sediment core from the northern Antarctic zone. Overall dominance of Fragilariopsis kerguelensis in the diatom assemblages resulted in a close affinity between paleotemperature curve and relative abundance pattern of this species downcore. Logarithmic conversion of counting data applied with other ranking methods in order to compensate the dominance of F. kerguelensis revealed the best statistical results. A reliable diatom transfer function for future paleotemperature estimations is presented.

Identifier
DOI http://dx.doi.org/doi:10.1594/PANGAEA.759803
Metadata Access http://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite3&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.759803
Provenance
Creator Sieger, Rainer;Gersonde, Rainer;Zielinski, Ulrich;Fütterer, Dieter K
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 1998
Rights Creative Commons Attribution 3.0 Unported (CC-BY)
Representation
Language English
Resource Type Supplementary Collection of Datasets
Format application/zip
Coverage
Discipline Earth System Research
Spatial Coverage (78S-35S,69W-42E)
Temporal Point 1983-12-09T11:59:59Z