Accumulation rates in Dronning Maud Land, Antarctica, as revealed by dielectric-profiling measurements of shallow firn cores
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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ftunivbern:oai:boris.unibe.ch:158772 2023-08-20T03:59:49+02:00 Accumulation rates in Dronning Maud Land, Antarctica, as revealed by dielectric-profiling measurements of shallow firn cores Oerter, H. Wilhelms, F. Jung-Rothenhäusler, F. Göktas, F. Miller, H. Graf, W. Sommer, S. 2000 application/pdf https://boris.unibe.ch/158772/1/accumulation-rates-in-dronning-maud-land-antarctica-as-revealed-by-dielectric-profiling-measurements-of-shallow-firn-cores.pdf https://boris.unibe.ch/158772/ eng eng International Glaciological Society https://boris.unibe.ch/158772/ info:eu-repo/semantics/restrictedAccess Oerter, H.; Wilhelms, F.; Jung-Rothenhäusler, F.; Göktas, F.; Miller, H.; Graf, W.; Sommer, S. (2000). Accumulation rates in Dronning Maud Land, Antarctica, as revealed by dielectric-profiling measurements of shallow firn cores. Annals of glaciology, 30, pp. 27-34. International Glaciological Society 10.3189/172756400781820705 <http://dx.doi.org/10.3189/172756400781820705> 530 Physics info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2000 ftunivbern https://doi.org/10.3189/172756400781820705 2023-07-31T22:08:19Z 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 δ18O records from Amundsenisen. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctica Dronning Maud Land BORIS (Bern Open Repository and Information System, University of Bern) Amundsenisen ENVELOPE(-6.000,-6.000,-74.500,-74.500) Dronning Maud Land Annals of Glaciology 30 27 34 |
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Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
530 Physics |
spellingShingle |
530 Physics Oerter, H. Wilhelms, F. Jung-Rothenhäusler, F. Göktas, F. Miller, H. Graf, W. Sommer, S. Accumulation rates in Dronning Maud Land, Antarctica, as revealed by dielectric-profiling measurements of shallow firn cores |
topic_facet |
530 Physics |
description |
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 δ18O records from Amundsenisen. |
format |
Article in Journal/Newspaper |
author |
Oerter, H. Wilhelms, F. Jung-Rothenhäusler, F. Göktas, F. Miller, H. Graf, W. Sommer, S. |
author_facet |
Oerter, H. Wilhelms, F. Jung-Rothenhäusler, F. Göktas, F. Miller, H. Graf, W. Sommer, S. |
author_sort |
Oerter, H. |
title |
Accumulation rates in Dronning Maud Land, Antarctica, as revealed by dielectric-profiling measurements of shallow firn cores |
title_short |
Accumulation rates in Dronning Maud Land, Antarctica, as revealed by dielectric-profiling measurements of shallow firn cores |
title_full |
Accumulation rates in Dronning Maud Land, Antarctica, as revealed by dielectric-profiling measurements of shallow firn cores |
title_fullStr |
Accumulation rates in Dronning Maud Land, Antarctica, as revealed by dielectric-profiling measurements of shallow firn cores |
title_full_unstemmed |
Accumulation rates in Dronning Maud Land, Antarctica, as revealed by dielectric-profiling measurements of shallow firn cores |
title_sort |
accumulation rates in dronning maud land, antarctica, as revealed by dielectric-profiling measurements of shallow firn cores |
publisher |
International Glaciological Society |
publishDate |
2000 |
url |
https://boris.unibe.ch/158772/1/accumulation-rates-in-dronning-maud-land-antarctica-as-revealed-by-dielectric-profiling-measurements-of-shallow-firn-cores.pdf https://boris.unibe.ch/158772/ |
long_lat |
ENVELOPE(-6.000,-6.000,-74.500,-74.500) |
geographic |
Amundsenisen Dronning Maud Land |
geographic_facet |
Amundsenisen Dronning Maud Land |
genre |
Annals of Glaciology Antarc* Antarctica Dronning Maud Land |
genre_facet |
Annals of Glaciology Antarc* Antarctica Dronning Maud Land |
op_source |
Oerter, H.; Wilhelms, F.; Jung-Rothenhäusler, F.; Göktas, F.; Miller, H.; Graf, W.; Sommer, S. (2000). Accumulation rates in Dronning Maud Land, Antarctica, as revealed by dielectric-profiling measurements of shallow firn cores. Annals of glaciology, 30, pp. 27-34. International Glaciological Society 10.3189/172756400781820705 <http://dx.doi.org/10.3189/172756400781820705> |
op_relation |
https://boris.unibe.ch/158772/ |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.3189/172756400781820705 |
container_title |
Annals of Glaciology |
container_volume |
30 |
container_start_page |
27 |
op_container_end_page |
34 |
_version_ |
1774715773576544256 |