30,000 Years of Cosmic Dust in Antarctic Ice
Polar ice provides an archive for the influx of cosmic dust. Here, we present a high-resolution, glacial-to-interglacial record of cosmic dust using helium isotope analysis of the European Project for Ice Coring in Antarctica (EPICA) ice core drilled in Dronning Maud Land. We obtained a relatively c...
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American Association for the Advancement of Science (AAAS)
2006
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Online Access: | http://dx.doi.org/10.1126/science.1127469 https://www.science.org/doi/pdf/10.1126/science.1127469 |
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craaas:10.1126/science.1127469 2024-06-09T07:41:04+00:00 30,000 Years of Cosmic Dust in Antarctic Ice Winckler, Gisela Fischer, Hubertus 2006 http://dx.doi.org/10.1126/science.1127469 https://www.science.org/doi/pdf/10.1126/science.1127469 en eng American Association for the Advancement of Science (AAAS) Science volume 313, issue 5786, page 491-491 ISSN 0036-8075 1095-9203 journal-article 2006 craaas https://doi.org/10.1126/science.1127469 2024-05-16T12:54:21Z Polar ice provides an archive for the influx of cosmic dust. Here, we present a high-resolution, glacial-to-interglacial record of cosmic dust using helium isotope analysis of the European Project for Ice Coring in Antarctica (EPICA) ice core drilled in Dronning Maud Land. We obtained a relatively constant 3 He flux over the past 30,000 years. This finding excludes 3 He as a pacemaker of late Pleistocene glacial cycles. Rather, it supports 3 He as a constant flux parameter in paleoclimatic studies. A last glacial-to-Holocene shift of the 4 He/non‐sea salt Ca 2+ ratio appears to indicate a glacial-to-interglacial change in the terrestrial dust source. Article in Journal/Newspaper Antarc* Antarctic Antarctica Dronning Maud Land EPICA ice core AAAS Resource Center (American Association for the Advancement of Science) Antarctic Dronning Maud Land Science 313 5786 491 491 |
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Open Polar |
collection |
AAAS Resource Center (American Association for the Advancement of Science) |
op_collection_id |
craaas |
language |
English |
description |
Polar ice provides an archive for the influx of cosmic dust. Here, we present a high-resolution, glacial-to-interglacial record of cosmic dust using helium isotope analysis of the European Project for Ice Coring in Antarctica (EPICA) ice core drilled in Dronning Maud Land. We obtained a relatively constant 3 He flux over the past 30,000 years. This finding excludes 3 He as a pacemaker of late Pleistocene glacial cycles. Rather, it supports 3 He as a constant flux parameter in paleoclimatic studies. A last glacial-to-Holocene shift of the 4 He/non‐sea salt Ca 2+ ratio appears to indicate a glacial-to-interglacial change in the terrestrial dust source. |
format |
Article in Journal/Newspaper |
author |
Winckler, Gisela Fischer, Hubertus |
spellingShingle |
Winckler, Gisela Fischer, Hubertus 30,000 Years of Cosmic Dust in Antarctic Ice |
author_facet |
Winckler, Gisela Fischer, Hubertus |
author_sort |
Winckler, Gisela |
title |
30,000 Years of Cosmic Dust in Antarctic Ice |
title_short |
30,000 Years of Cosmic Dust in Antarctic Ice |
title_full |
30,000 Years of Cosmic Dust in Antarctic Ice |
title_fullStr |
30,000 Years of Cosmic Dust in Antarctic Ice |
title_full_unstemmed |
30,000 Years of Cosmic Dust in Antarctic Ice |
title_sort |
30,000 years of cosmic dust in antarctic ice |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2006 |
url |
http://dx.doi.org/10.1126/science.1127469 https://www.science.org/doi/pdf/10.1126/science.1127469 |
geographic |
Antarctic Dronning Maud Land |
geographic_facet |
Antarctic Dronning Maud Land |
genre |
Antarc* Antarctic Antarctica Dronning Maud Land EPICA ice core |
genre_facet |
Antarc* Antarctic Antarctica Dronning Maud Land EPICA ice core |
op_source |
Science volume 313, issue 5786, page 491-491 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.1127469 |
container_title |
Science |
container_volume |
313 |
container_issue |
5786 |
container_start_page |
491 |
op_container_end_page |
491 |
_version_ |
1801369481153347584 |