Characterization of late glacial continental dust in the Greenland Ice Core Project ice core
Twelve glacial dust samples extracted from the Greenland Ice Core Project ice core have been characterized in terms of mineralogy, Sr and Nd isotopic composition, and rare earth element concentrations. The ice samples are taken from the Younger Dryas, the Bølling, the Last Glacial Maximum, and both...
Published in: | Journal of Geophysical Research: Atmospheres |
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ftcopenhagenunip:oai:pure.atira.dk:publications/f0f55613-79a0-485d-a167-367fef6e278e 2023-05-15T16:27:58+02:00 Characterization of late glacial continental dust in the Greenland Ice Core Project ice core Svensson, Anders Biscaye, Pierre E. Grousset, Francis E. 2000-02-27 https://curis.ku.dk/portal/da/publications/characterization-of-late-glacial-continental-dust-in-the-greenland-ice-core-project-ice-core(f0f55613-79a0-485d-a167-367fef6e278e).html https://doi.org/10.1029/1999JD901093 http://www.scopus.com/inward/record.url?scp=85046528443&partnerID=8YFLogxK eng eng info:eu-repo/semantics/closedAccess Svensson , A , Biscaye , P E & Grousset , F E 2000 , ' Characterization of late glacial continental dust in the Greenland Ice Core Project ice core ' , Journal of Geophysical Research Atmospheres , vol. 105 , no. D4 , 1999JD901093 , pp. 4637-4656 . https://doi.org/10.1029/1999JD901093 article 2000 ftcopenhagenunip https://doi.org/10.1029/1999JD901093 2022-03-09T23:49:58Z Twelve glacial dust samples extracted from the Greenland Ice Core Project ice core have been characterized in terms of mineralogy, Sr and Nd isotopic composition, and rare earth element concentrations. The ice samples are taken from the Younger Dryas, the Bølling, the Last Glacial Maximum, and both cold and mild glacial periods back to 44 kyr B.P. A comparison with samples from possible dust source areas determines eastern Asia as being the main source area at all times, hereby confirming and extending earlier results (Biscaye et al., 1997). This finding is partly in agreement with recent atmospheric general circulation model simulations of glacial atmospheric dust transport (Andersen et al., 1998; Mahowald et al., 1999). A low intersample variability in tracer characteristics is discussed in the context of a volcanogenic influence, grain size dependence, and variability in the continental dust source areas. The clay mineralogy of the ice core dust shows a weak climatic dependence, while the isotopic composition of Sr and Nd does not correlate with climate. This is interpreted as a geographical variation of source areas on a regional scale within Asia. Two ice dust samples were size-fractionated at 2 μm, and the grain size dependence on tracer characteristics is in accordance with the literature. Article in Journal/Newspaper Greenland Greenland ice core Greenland Ice core Project ice core University of Copenhagen: Research Greenland Journal of Geophysical Research: Atmospheres 105 D4 4637 4656 |
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Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
description |
Twelve glacial dust samples extracted from the Greenland Ice Core Project ice core have been characterized in terms of mineralogy, Sr and Nd isotopic composition, and rare earth element concentrations. The ice samples are taken from the Younger Dryas, the Bølling, the Last Glacial Maximum, and both cold and mild glacial periods back to 44 kyr B.P. A comparison with samples from possible dust source areas determines eastern Asia as being the main source area at all times, hereby confirming and extending earlier results (Biscaye et al., 1997). This finding is partly in agreement with recent atmospheric general circulation model simulations of glacial atmospheric dust transport (Andersen et al., 1998; Mahowald et al., 1999). A low intersample variability in tracer characteristics is discussed in the context of a volcanogenic influence, grain size dependence, and variability in the continental dust source areas. The clay mineralogy of the ice core dust shows a weak climatic dependence, while the isotopic composition of Sr and Nd does not correlate with climate. This is interpreted as a geographical variation of source areas on a regional scale within Asia. Two ice dust samples were size-fractionated at 2 μm, and the grain size dependence on tracer characteristics is in accordance with the literature. |
format |
Article in Journal/Newspaper |
author |
Svensson, Anders Biscaye, Pierre E. Grousset, Francis E. |
spellingShingle |
Svensson, Anders Biscaye, Pierre E. Grousset, Francis E. Characterization of late glacial continental dust in the Greenland Ice Core Project ice core |
author_facet |
Svensson, Anders Biscaye, Pierre E. Grousset, Francis E. |
author_sort |
Svensson, Anders |
title |
Characterization of late glacial continental dust in the Greenland Ice Core Project ice core |
title_short |
Characterization of late glacial continental dust in the Greenland Ice Core Project ice core |
title_full |
Characterization of late glacial continental dust in the Greenland Ice Core Project ice core |
title_fullStr |
Characterization of late glacial continental dust in the Greenland Ice Core Project ice core |
title_full_unstemmed |
Characterization of late glacial continental dust in the Greenland Ice Core Project ice core |
title_sort |
characterization of late glacial continental dust in the greenland ice core project ice core |
publishDate |
2000 |
url |
https://curis.ku.dk/portal/da/publications/characterization-of-late-glacial-continental-dust-in-the-greenland-ice-core-project-ice-core(f0f55613-79a0-485d-a167-367fef6e278e).html https://doi.org/10.1029/1999JD901093 http://www.scopus.com/inward/record.url?scp=85046528443&partnerID=8YFLogxK |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice core Greenland Ice core Project ice core |
genre_facet |
Greenland Greenland ice core Greenland Ice core Project ice core |
op_source |
Svensson , A , Biscaye , P E & Grousset , F E 2000 , ' Characterization of late glacial continental dust in the Greenland Ice Core Project ice core ' , Journal of Geophysical Research Atmospheres , vol. 105 , no. D4 , 1999JD901093 , pp. 4637-4656 . https://doi.org/10.1029/1999JD901093 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1029/1999JD901093 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
105 |
container_issue |
D4 |
container_start_page |
4637 |
op_container_end_page |
4656 |
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1766017582846967808 |