Firn accumulation records for the past 1000 years on the basis of dielectric profiling of six cores from Dronning Maud Land, Antarctica
This paper presents an overview of firn accumulation in Dronning Maud Land (DML), Antarctica, over the past 1000 years. It is based on a chronology established with dated volcanogenic horizons detected by dielectric profiling of six medium-length firn cores. In 1998 the British Antarctic Survey retr...
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ftnerc:oai:nora.nerc.ac.uk:12198 2023-05-15T13:45:10+02:00 Firn accumulation records for the past 1000 years on the basis of dielectric profiling of six cores from Dronning Maud Land, Antarctica Hofstede, Coen M. Van De Wal, Roderik S.W. Kaspers, Karsten A. Van Den Broeke, Michiel R. Karlöf, Lars Winther, Jan-Gunnar Isaksson, Elisabeth Lappegard, Gante Mulvaney, Robert Oerter, Hans Wilhelms, Frank 2004 http://nora.nerc.ac.uk/id/eprint/12198/ unknown International Glaciological Society Hofstede, Coen M.; Van De Wal, Roderik S.W.; Kaspers, Karsten A.; Van Den Broeke, Michiel R.; Karlöf, Lars; Winther, Jan-Gunnar; Isaksson, Elisabeth; Lappegard, Gante; Mulvaney, Robert orcid:0000-0002-5372-8148 Oerter, Hans; Wilhelms, Frank. 2004 Firn accumulation records for the past 1000 years on the basis of dielectric profiling of six cores from Dronning Maud Land, Antarctica. Journal of Glaciology, 50 (169). 279-291. https://doi.org/10.3189/172756504781830169 <https://doi.org/10.3189/172756504781830169> Glaciology Earth Sciences Publication - Article PeerReviewed 2004 ftnerc https://doi.org/10.3189/172756504781830169 2023-02-04T19:27:51Z This paper presents an overview of firn accumulation in Dronning Maud Land (DML), Antarctica, over the past 1000 years. It is based on a chronology established with dated volcanogenic horizons detected by dielectric profiling of six medium-length firn cores. In 1998 the British Antarctic Survey retrieved a medium-length firn core from western DML. During the Nordic EPICA (European Project for Ice Coring in Antarctica) traverse of 2000/01, a 160 in long firn core was drilled in easternDML. Together with previously published data from four other medium-length ice cores from the area, these cores yield 50 possible volcanogenic horizons. All six firn cores cover a mutual time record until the 29th eruption. This overlapping period represents a period of approximately 1000 years, with mean values ranging between 43 and 71 mm w.e. The cores revealed no significant trend in snow accumulation. Running averages over 50 years, averaged over the six cores, indicate temporal variations of 5%. All cores display evidence of a minimum in the mean annual firn accumulation rate around AD 1500 and maxima around AD 1400 and 1800. The mean increase over the early 20th century was the strongest increase, but the absolute accumulation rate was not much higher than around AD 1400. In eastern DML a 13% increase is observed for the second half of the 20th century. Article in Journal/Newspaper Antarc* Antarctic Antarctica Antarctica Journal British Antarctic Survey DML Dronning Maud Land EPICA Journal of Glaciology Natural Environment Research Council: NERC Open Research Archive Antarctic Dronning Maud Land Journal of Glaciology 50 169 279 291 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Glaciology Earth Sciences |
spellingShingle |
Glaciology Earth Sciences Hofstede, Coen M. Van De Wal, Roderik S.W. Kaspers, Karsten A. Van Den Broeke, Michiel R. Karlöf, Lars Winther, Jan-Gunnar Isaksson, Elisabeth Lappegard, Gante Mulvaney, Robert Oerter, Hans Wilhelms, Frank Firn accumulation records for the past 1000 years on the basis of dielectric profiling of six cores from Dronning Maud Land, Antarctica |
topic_facet |
Glaciology Earth Sciences |
description |
This paper presents an overview of firn accumulation in Dronning Maud Land (DML), Antarctica, over the past 1000 years. It is based on a chronology established with dated volcanogenic horizons detected by dielectric profiling of six medium-length firn cores. In 1998 the British Antarctic Survey retrieved a medium-length firn core from western DML. During the Nordic EPICA (European Project for Ice Coring in Antarctica) traverse of 2000/01, a 160 in long firn core was drilled in easternDML. Together with previously published data from four other medium-length ice cores from the area, these cores yield 50 possible volcanogenic horizons. All six firn cores cover a mutual time record until the 29th eruption. This overlapping period represents a period of approximately 1000 years, with mean values ranging between 43 and 71 mm w.e. The cores revealed no significant trend in snow accumulation. Running averages over 50 years, averaged over the six cores, indicate temporal variations of 5%. All cores display evidence of a minimum in the mean annual firn accumulation rate around AD 1500 and maxima around AD 1400 and 1800. The mean increase over the early 20th century was the strongest increase, but the absolute accumulation rate was not much higher than around AD 1400. In eastern DML a 13% increase is observed for the second half of the 20th century. |
format |
Article in Journal/Newspaper |
author |
Hofstede, Coen M. Van De Wal, Roderik S.W. Kaspers, Karsten A. Van Den Broeke, Michiel R. Karlöf, Lars Winther, Jan-Gunnar Isaksson, Elisabeth Lappegard, Gante Mulvaney, Robert Oerter, Hans Wilhelms, Frank |
author_facet |
Hofstede, Coen M. Van De Wal, Roderik S.W. Kaspers, Karsten A. Van Den Broeke, Michiel R. Karlöf, Lars Winther, Jan-Gunnar Isaksson, Elisabeth Lappegard, Gante Mulvaney, Robert Oerter, Hans Wilhelms, Frank |
author_sort |
Hofstede, Coen M. |
title |
Firn accumulation records for the past 1000 years on the basis of dielectric profiling of six cores from Dronning Maud Land, Antarctica |
title_short |
Firn accumulation records for the past 1000 years on the basis of dielectric profiling of six cores from Dronning Maud Land, Antarctica |
title_full |
Firn accumulation records for the past 1000 years on the basis of dielectric profiling of six cores from Dronning Maud Land, Antarctica |
title_fullStr |
Firn accumulation records for the past 1000 years on the basis of dielectric profiling of six cores from Dronning Maud Land, Antarctica |
title_full_unstemmed |
Firn accumulation records for the past 1000 years on the basis of dielectric profiling of six cores from Dronning Maud Land, Antarctica |
title_sort |
firn accumulation records for the past 1000 years on the basis of dielectric profiling of six cores from dronning maud land, antarctica |
publisher |
International Glaciological Society |
publishDate |
2004 |
url |
http://nora.nerc.ac.uk/id/eprint/12198/ |
geographic |
Antarctic Dronning Maud Land |
geographic_facet |
Antarctic Dronning Maud Land |
genre |
Antarc* Antarctic Antarctica Antarctica Journal British Antarctic Survey DML Dronning Maud Land EPICA Journal of Glaciology |
genre_facet |
Antarc* Antarctic Antarctica Antarctica Journal British Antarctic Survey DML Dronning Maud Land EPICA Journal of Glaciology |
op_relation |
Hofstede, Coen M.; Van De Wal, Roderik S.W.; Kaspers, Karsten A.; Van Den Broeke, Michiel R.; Karlöf, Lars; Winther, Jan-Gunnar; Isaksson, Elisabeth; Lappegard, Gante; Mulvaney, Robert orcid:0000-0002-5372-8148 Oerter, Hans; Wilhelms, Frank. 2004 Firn accumulation records for the past 1000 years on the basis of dielectric profiling of six cores from Dronning Maud Land, Antarctica. Journal of Glaciology, 50 (169). 279-291. https://doi.org/10.3189/172756504781830169 <https://doi.org/10.3189/172756504781830169> |
op_doi |
https://doi.org/10.3189/172756504781830169 |
container_title |
Journal of Glaciology |
container_volume |
50 |
container_issue |
169 |
container_start_page |
279 |
op_container_end_page |
291 |
_version_ |
1766214963726123008 |