Physical properties and accumulation rates in Dronning Maud Land, Antarctica

The European Programme for Ice Coring in Antarctica includes a comprehensive pre-site survey on the inland ice plateau of Dronning Maud Land, Antarctica. The German glaciological programme during the 1997/98 field season was carried out along a 1200 km traverse on Amundsenisen and involved sampling...

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Bibliographic Details
Main Authors: Oerter, Hans, Wilhelms, Frank, Jung-Rothenhäusler, Frederik, Göktas, Fidan, Miller, Heinz, Graf, Wolfgang, Sommer, Stefan
Format: Dataset
Language:English
Published: PANGAEA 2000
Subjects:
B31
B32
B33
DML03C98_09
DML05C98_06
DML05C98_07
DML05C98_32
DML07C98_31
DML11C98_03
DML12C98_17
DML13C98_16
DML14C98_15
DML15C98_14
DML16C98_13
DML17C98_33
DML18C98_04
DML19C98_05
DML20C98_08
DML21C98_10
DML22C98_11
DML23C98_12
DML24C98_18
DML60C98_02
Dronning Maud Land
Antarctica
EPICA
EPICA_DML3
EPICA_DML4
European Project for Ice Coring in Antarctica
FB9801
FB9802
FB9803
FB9804
FB9805
FB9806
FB9807
FB9808
FB9809
FB9810
FB9811
FB9812
FB9813
FB9814
FB9815
FB9816
FB9817
FB9818
FIRN
Firn auger
ICEDRILL
Amundsenisen
Annals of Glaciology
Antarc*
Berichte zur Polarforschung
Polar Research
Polarforschung
Reports on polar research
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.728162
https://doi.org/10.1594/PANGAEA.728162
Description
Summary:The European Programme for Ice Coring in Antarctica includes a comprehensive pre-site survey on the inland ice plateau of Dronning Maud Land, Antarctica. The German glaciological programme during the 1997/98 field season was carried out along a 1200 km traverse on Amundsenisen and involved sampling the snow cover in pits and by shallow firn cores. This paper focuses on the accumulation studies. The cores were dated by dielectric-profiling and continuous-flow analysis. Distinct volcanogenic peaks and seasonal signals in the profiles served to establish a depth time-scale. The eruptions of Krakatoa, Tambora, an unknown volcano, Kuwae and El Chichon are well-documented in the ice. Variations of the accumulation rates over different times were inferred from the depth time-scales. A composite record of accumulation rates for the last 200 years was produced by stacking 12 annually resolved records. According to this, accumulation rates decreased in the 19th century and increased in the 20th century. The recent values are by no means extraordinary, as they do not exceed the values at the beginning of the 19th century. Variations in accumulation rates are most probably linked to temperature variations indicated in d18O records from Amundsenisen.

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