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Accumulation variability derived from an ice core from coastal Dronning Maud Land, Antarctica

  • Marzena Kaczmarska (a1), Elisabeth Isaksson (a1), Lars Karlöf (a1), Jan-Gunnar Winther (a1), Jack Kohler (a1), Fred Godtliebsen (a2), Lena Ringstad Olsen (a2), Coen M. Hofstede (a3), Michiel R. Van Den Broeke (a3), Roderik S. W. Van De Wal (a3) and Niels Gundestrup (a4)...

Abstract

A 100 m long ice core was retrieved from the coastal area of Dronning Maud Land (DML), Antarctica, in the 2000/01 austral summer. The core was dated to AD 1737 by identification of volcanic horizons in dielectrical profiling and electrical conductivity measurement records in combination with seasonal layer counting from high-resolution oxygen isotope (δ18O) data. A mean long-term accumulation rate of 0.29 ma–1w.e. was derived from the high-resolution δ18O record as well as accumulation rates during periods in between the identified volcanic horizons. A statistically significant decrease in accumulation was found from about 1920 to the present. A comparison with other coastal ice cores from DML suggests that this is a regional pattern.

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References

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Accumulation variability derived from an ice core from coastal Dronning Maud Land, Antarctica

  • Marzena Kaczmarska (a1), Elisabeth Isaksson (a1), Lars Karlöf (a1), Jan-Gunnar Winther (a1), Jack Kohler (a1), Fred Godtliebsen (a2), Lena Ringstad Olsen (a2), Coen M. Hofstede (a3), Michiel R. Van Den Broeke (a3), Roderik S. W. Van De Wal (a3) and Niels Gundestrup (a4)...

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