First results from stable-istope measurements on ice cores from Dronning Maud Land

The European Project for Ice Coring in Antarctica (EPICA) focuses on the drilling of two deep ice cores, the first at Dome C and the second at Kohnen station (75°00' S, 0°04' E) in Dronning Maud Land (DML). This paper deals with stable-isotope records from ice cores drilled in DML. In the first season, the deep EPICA DML core reached a depth of 450 m, recovering ice approximately 7000 years old. Generally, the d18O record indicates a stable Holocene climate and shows low variability. However, during the last 4000 years (based on a preliminary time-scale) the d18O values decrease continuously by about 0.6%, and the deuterium excess values increase by about 0.5%. The correlation between d18O and the deuterium excess d is investigated for a 50m long core section and the near-surface snow. High-pass filtered profiles are positively correlated, whereas the correlation between low-pass filtered profiles is negative. A post-depositional effect due to diffusion processes can be seen in a sub-annually resolved profile from snow-pit samples. Changes in the seasonality of the evolution of the snow cover and the consequences for stable-isotope content are demonstrated with data from ice core B31.

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Oerter, Hans, Graf, Wolfgang, Meyer, Hanno, Wilhelms, Frank (2004). Dataset: First results from stable-istope measurements on ice cores from Dronning Maud Land. https://doi.org/10.1594/PANGAEA.728145

DOI retrieved: 2004

Additional Info

Field Value
Imported on November 30, 2024
Last update November 30, 2024
License CC-BY-3.0
Source https://doi.org/10.1594/PANGAEA.728145
Author Oerter, Hans
Given Name Hans
Family Name Oerter
More Authors
Graf, Wolfgang
Meyer, Hanno
Wilhelms, Frank
Source Creation 2004
Publication Year 2004
Resource Type application/zip - filename: oerter_2004
Subject Areas
Name: LandSurface

Name: Lithosphere

Related Identifiers
Title: The EPICA ice core from Dronning Maud Land: first results from stable-istope measurements
Identifier: https://doi.org/10.3189/172756404781814032
Type: DOI
Relation: IsSupplementTo
Year: 2004
Source: Annals of Glaciology
Authors: Oerter Hans , Graf Wolfgang , Meyer Hanno , Wilhelms Frank .