Age models of five ice cores from the Dronning Maud Land, Antarctica
For the first time, annually resolved accumulation rates have been determined in central Antarctica by means of counting seasonal signals of ammonium, calcium, and sodium. All records, obtained from three intermediate depth ice cores from Dronning Maud Land, East Antarctica, show rather constant acc...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.728290 2023-05-15T13:42:09+02:00 Age models of five ice cores from the Dronning Maud Land, Antarctica Sommer, Stefan Appenzeller, C Röthlisberger, Regine Hutterli, Manuel A Stauffer, Bernhard Wagenbach, Dietmar Oerter, Hans Wilhelms, Frank Miller, Heinz Mulvaney, Robert MEDIAN LATITUDE: -75.154595 * MEDIAN LONGITUDE: 1.515024 * SOUTH-BOUND LATITUDE: -75.581500 * WEST-BOUND LONGITUDE: -3.430333 * NORTH-BOUND LATITUDE: -74.499167 * EAST-BOUND LONGITUDE: 6.498500 * DATE/TIME START: 1997-12-19T00:00:00 * DATE/TIME END: 1998-01-14T00:00:00 2000-10-02 application/zip, 7 datasets https://doi.pangaea.de/10.1594/PANGAEA.728290 https://doi.org/10.1594/PANGAEA.728290 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.728290 https://doi.org/10.1594/PANGAEA.728290 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Sommer, Stefan; Appenzeller, C; Röthlisberger, Regine; Hutterli, Manuel A; Stauffer, Bernhard; Wagenbach, Dietmar; Oerter, Hans; Wilhelms, Frank; Miller, Heinz; Mulvaney, Robert (2000): Glacio-chemical study spanning the past 2 kyr on three ice cores from Dronning Maud Land, Antarctica 1. Annually resolved accumulation rates. Journal of Geophysical Research: Atmospheres, 105(D24), 29411-29422, https://doi.org/10.1029/2000JD900449 B31 B32 B33 DML03C98_09 DML05C98_32 DML07C98_31 DML15C98_14 DML17C98_33 Dronning Maud Land Antarctica EPICA EPICA_DML3 European Project for Ice Coring in Antarctica FB9809 FB9814 ICEDRILL Ice drill Neumayer Station (WMO89002) Dataset 2000 ftpangaea https://doi.org/10.1594/PANGAEA.728290 https://doi.org/10.1029/2000JD900449 2023-01-20T07:31:31Z For the first time, annually resolved accumulation rates have been determined in central Antarctica by means of counting seasonal signals of ammonium, calcium, and sodium. All records, obtained from three intermediate depth ice cores from Dronning Maud Land, East Antarctica, show rather constant accumulation rates throughout the last 9 centuries with mean values of 63, 61, and 44 mm H2O yr**-1 and a typical year-to-year variation of about 30%. For the last few decades, no trend was detected accounting for the high natural variability of all records. A significant weak intersite correlation is apparent only between two cores when the high-frequency part with periods less than 30 years is removed. By analyzing the records in the frequency domain, no persistent periods were found. This suggests that the snow accumulation in this area is mainly influenced by local deposition patterns and may be additionally masked by redistribution of snow due to wind. By comparing accumulation rates over the last 2 millennia a distinct change in the layer thickness in one of the three cores was found, which might be attributed either to an area upstream of the drilling site with lower accumulation rates, or to deposition processes influenced by surface undulations. The missing of a clear correlation between the accumulation rate histories at the three locations is also important for the interpretation of small, short time variations of past precipitation records obtained from deep ice cores. Dataset Antarc* Antarctica Dronning Maud Land East Antarctica EPICA PANGAEA - Data Publisher for Earth & Environmental Science East Antarctica Dronning Maud Land Neumayer Neumayer Station ENVELOPE(-3.430333,6.498500,-74.499167,-75.581500) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
B31 B32 B33 DML03C98_09 DML05C98_32 DML07C98_31 DML15C98_14 DML17C98_33 Dronning Maud Land Antarctica EPICA EPICA_DML3 European Project for Ice Coring in Antarctica FB9809 FB9814 ICEDRILL Ice drill Neumayer Station (WMO89002) |
spellingShingle |
B31 B32 B33 DML03C98_09 DML05C98_32 DML07C98_31 DML15C98_14 DML17C98_33 Dronning Maud Land Antarctica EPICA EPICA_DML3 European Project for Ice Coring in Antarctica FB9809 FB9814 ICEDRILL Ice drill Neumayer Station (WMO89002) Sommer, Stefan Appenzeller, C Röthlisberger, Regine Hutterli, Manuel A Stauffer, Bernhard Wagenbach, Dietmar Oerter, Hans Wilhelms, Frank Miller, Heinz Mulvaney, Robert Age models of five ice cores from the Dronning Maud Land, Antarctica |
topic_facet |
B31 B32 B33 DML03C98_09 DML05C98_32 DML07C98_31 DML15C98_14 DML17C98_33 Dronning Maud Land Antarctica EPICA EPICA_DML3 European Project for Ice Coring in Antarctica FB9809 FB9814 ICEDRILL Ice drill Neumayer Station (WMO89002) |
description |
For the first time, annually resolved accumulation rates have been determined in central Antarctica by means of counting seasonal signals of ammonium, calcium, and sodium. All records, obtained from three intermediate depth ice cores from Dronning Maud Land, East Antarctica, show rather constant accumulation rates throughout the last 9 centuries with mean values of 63, 61, and 44 mm H2O yr**-1 and a typical year-to-year variation of about 30%. For the last few decades, no trend was detected accounting for the high natural variability of all records. A significant weak intersite correlation is apparent only between two cores when the high-frequency part with periods less than 30 years is removed. By analyzing the records in the frequency domain, no persistent periods were found. This suggests that the snow accumulation in this area is mainly influenced by local deposition patterns and may be additionally masked by redistribution of snow due to wind. By comparing accumulation rates over the last 2 millennia a distinct change in the layer thickness in one of the three cores was found, which might be attributed either to an area upstream of the drilling site with lower accumulation rates, or to deposition processes influenced by surface undulations. The missing of a clear correlation between the accumulation rate histories at the three locations is also important for the interpretation of small, short time variations of past precipitation records obtained from deep ice cores. |
format |
Dataset |
author |
Sommer, Stefan Appenzeller, C Röthlisberger, Regine Hutterli, Manuel A Stauffer, Bernhard Wagenbach, Dietmar Oerter, Hans Wilhelms, Frank Miller, Heinz Mulvaney, Robert |
author_facet |
Sommer, Stefan Appenzeller, C Röthlisberger, Regine Hutterli, Manuel A Stauffer, Bernhard Wagenbach, Dietmar Oerter, Hans Wilhelms, Frank Miller, Heinz Mulvaney, Robert |
author_sort |
Sommer, Stefan |
title |
Age models of five ice cores from the Dronning Maud Land, Antarctica |
title_short |
Age models of five ice cores from the Dronning Maud Land, Antarctica |
title_full |
Age models of five ice cores from the Dronning Maud Land, Antarctica |
title_fullStr |
Age models of five ice cores from the Dronning Maud Land, Antarctica |
title_full_unstemmed |
Age models of five ice cores from the Dronning Maud Land, Antarctica |
title_sort |
age models of five ice cores from the dronning maud land, antarctica |
publisher |
PANGAEA |
publishDate |
2000 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.728290 https://doi.org/10.1594/PANGAEA.728290 |
op_coverage |
MEDIAN LATITUDE: -75.154595 * MEDIAN LONGITUDE: 1.515024 * SOUTH-BOUND LATITUDE: -75.581500 * WEST-BOUND LONGITUDE: -3.430333 * NORTH-BOUND LATITUDE: -74.499167 * EAST-BOUND LONGITUDE: 6.498500 * DATE/TIME START: 1997-12-19T00:00:00 * DATE/TIME END: 1998-01-14T00:00:00 |
long_lat |
ENVELOPE(-3.430333,6.498500,-74.499167,-75.581500) |
geographic |
East Antarctica Dronning Maud Land Neumayer Neumayer Station |
geographic_facet |
East Antarctica Dronning Maud Land Neumayer Neumayer Station |
genre |
Antarc* Antarctica Dronning Maud Land East Antarctica EPICA |
genre_facet |
Antarc* Antarctica Dronning Maud Land East Antarctica EPICA |
op_source |
Supplement to: Sommer, Stefan; Appenzeller, C; Röthlisberger, Regine; Hutterli, Manuel A; Stauffer, Bernhard; Wagenbach, Dietmar; Oerter, Hans; Wilhelms, Frank; Miller, Heinz; Mulvaney, Robert (2000): Glacio-chemical study spanning the past 2 kyr on three ice cores from Dronning Maud Land, Antarctica 1. Annually resolved accumulation rates. Journal of Geophysical Research: Atmospheres, 105(D24), 29411-29422, https://doi.org/10.1029/2000JD900449 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.728290 https://doi.org/10.1594/PANGAEA.728290 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.728290 https://doi.org/10.1029/2000JD900449 |
_version_ |
1766163581518217216 |