Analysis of Antarctic Ice Core Data (EPICA Dome C) with Flicker-Noise Spectroscopy
نویسندگان
چکیده
منابع مشابه
Glacial terminations in the EPICA Dome C ice core record
The southern hemisphere at glacial terminations: insights from the Dome C ice core R. Röthlisberger, M. Mudelsee, M. Bigler, M. de Angelis, H. Fischer, M. Hansson, F. Lambert, V. Masson-Delmotte, L. Sime, R. Udisti, and E. W. Wolff British Antarctic Survey, Natural Environment Research Council, Cambridge, UK Climate Risk Analysis, Hannover, Germany Niels Bohr Institute, University of Copenhagen...
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The EPICA (European Project for Ice Coring in Antarctica) Dome C drilling in East Antarctica has now been completed to a depth of 3260 m, at only a few meters above bedrock. Here we present the new EDC3 chronology, which is based on the use of 1) a snow accumulation and mechanical flow model, and 2) a set of independent age markers along the core. These are obtained by pattern matching of recor...
متن کاملA tentative chronology for the EPICA Dome Concordia ice core
A tentative age scale (EDC1) for the last 45 kyr is established for the new 788-m EPICA Dome C ice core using a simple ice flow model. The age of volcanic eruptions, the end of the Younger Dryas event, and the estimated depth and age of elevated Be, about 41 kyr ago were used to calibrate the model parameters. The uncertainty of EDC1 is estimated to ± 10 yr for 0 to 700 yr BP, up to ± 200 yr ba...
متن کاملOn the gas-ice depth difference (1depth) along the EPICA Dome C ice core
We compare a variety of methods for estimating the gas/ice depth offset (1depth) at EPICA Dome C (EDC, East Antarctica). (1) Purely based on modelling efforts, 1depth can be estimated combining a firn densification with an ice flow model. (2) The diffusive column height can be estimated from δ15N and converted to 1depth using an ice flow model and assumptions about past average firn density and...
متن کاملRetrieving the paleoclimatic signal from the deeper part of the EPICA Dome C ice core
An important share of paleoclimatic information is buried within the lowermost layers of deep ice cores. Because improving our records further back in time is one of the main challenges in the near future, it is essential to judge how deep these records remain unaltered, since the proximity of the bedrock is likely to interfere both with the recorded temporal sequence and the ice properties. In...
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ژورنال
عنوان ژورنال: Nature Precedings
سال: 2009
ISSN: 1756-0357
DOI: 10.1038/npre.2009.3341