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

• Main Authors: Oerter, Hans, Graf, Wolfgang, Meyer, Hanno, Wilhelms, Frank
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2004
• Subjects: Ice drill; Snow pit; EPICA drill; EPICA_DML3; EPICA_DML7; EPICA-Campaigns; Neumayer Station WMO89002; Kohnen Station; European Project for Ice Coring in Antarctica EPICA; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158; Antarc*; Antarctic; Antarctica; DML; Dronning Maud Land; EPICA; ice core; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.728145; https://doi.pangaea.de/10.1594/PANGAEA.728145

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 ... : Supplement to: Oerter, Hans; Graf, Wolfgang; Meyer, Hanno; Wilhelms, Frank (2004): The EPICA ice core from Dronning Maud Land: first results from stable-istope measurements. Annals of Glaciology, 39, 307-312 ...