Change in dust variability in the Atlantic sector of Antarctica at the end of the last deglaciation
AbstractWe present a Rare Earth Elements (REE) record determined on the EPICA ice core drilled at Dronning Maud Land (EDML) in the Atlantic sector of the East Antarctic Plateau. The record covers the transition from the last glacial stage (LGS) to the early Holocene (26 600–7500 yr BP) at decadal to...
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Climate of the Past.
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ftawi:oai:epic.awi.de:23520 2023-05-15T13:46:51+02:00 Change in dust variability in the Atlantic sector of Antarctica at the end of the last deglaciation Wegner, Anna Gabrielli, P. Dick, Dorothee Ruth, Urs Kriews, Michael De Deckker, P. Barbante, C. Cozzi, G. Delmonte, B. Fischer, Hubertus 2012-01-19 application/pdf https://epic.awi.de/id/eprint/23520/ https://epic.awi.de/id/eprint/23520/1/wegner2012_CP.pdf http://www.clim-past.net/8/135/2012/cp-8-135-2012.html https://hdl.handle.net/10013/epic.38734 https://hdl.handle.net/10013/epic.38734.d001 unknown Climate of the Past. https://epic.awi.de/id/eprint/23520/1/wegner2012_CP.pdf https://hdl.handle.net/10013/epic.38734.d001 Wegner, A. , Gabrielli, P. , Dick, D. , Ruth, U. , Kriews, M. , De Deckker, P. , Barbante, C. , Cozzi, G. , Delmonte, B. and Fischer, H. (2012) Change in dust variability in the Atlantic sector of Antarctica at the end of the last deglaciation , Climate of the Past., 8 , pp. 135-147 . doi:10.5194/cp-8-135-2012 <https://doi.org/10.5194/cp-8-135-2012> , hdl:10013/epic.38734 EPIC3Climate of the Past., Climate of the Past., 8, pp. 135-147 Article isiRev 2012 ftawi https://doi.org/10.5194/cp-8-135-2012 2021-12-24T15:34:42Z AbstractWe present a Rare Earth Elements (REE) record determined on the EPICA ice core drilled at Dronning Maud Land (EDML) in the Atlantic sector of the East Antarctic Plateau. The record covers the transition from the last glacial stage (LGS) to the early Holocene (26 600–7500 yr BP) at decadal to centennial resolution. Additionally, samples from potential source areas (PSAs) for Antarctic dust were analyzed for their REE characteristics. The dust provenance is discussed by comparing the REE fingerprints in the ice core and the PSA samples. We find a shift in variability in REE composition at ~15 000 yr BP in the ice core samples. Before 15 000 yr BP, the dust composition is very uniform and its provenance was most certainly dominated by a South American source. After 15 000 yr BP, multiple sources such as Australia and New Zealand become relatively more important, although South America remains the major dust source. A similar change in the dust characteristics was observed in the EPICA Dome C ice core at around ~15 000 yr BP, accompanied by a shift in the REE composition, thus suggesting a change of atmospheric circulation in the Southern Hemisphere. Article in Journal/Newspaper Antarc* Antarctic Antarctica Dronning Maud Land EPICA ice core Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Dronning Maud Land New Zealand Climate of the Past 8 1 135 147 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
AbstractWe present a Rare Earth Elements (REE) record determined on the EPICA ice core drilled at Dronning Maud Land (EDML) in the Atlantic sector of the East Antarctic Plateau. The record covers the transition from the last glacial stage (LGS) to the early Holocene (26 600–7500 yr BP) at decadal to centennial resolution. Additionally, samples from potential source areas (PSAs) for Antarctic dust were analyzed for their REE characteristics. The dust provenance is discussed by comparing the REE fingerprints in the ice core and the PSA samples. We find a shift in variability in REE composition at ~15 000 yr BP in the ice core samples. Before 15 000 yr BP, the dust composition is very uniform and its provenance was most certainly dominated by a South American source. After 15 000 yr BP, multiple sources such as Australia and New Zealand become relatively more important, although South America remains the major dust source. A similar change in the dust characteristics was observed in the EPICA Dome C ice core at around ~15 000 yr BP, accompanied by a shift in the REE composition, thus suggesting a change of atmospheric circulation in the Southern Hemisphere. |
format |
Article in Journal/Newspaper |
author |
Wegner, Anna Gabrielli, P. Dick, Dorothee Ruth, Urs Kriews, Michael De Deckker, P. Barbante, C. Cozzi, G. Delmonte, B. Fischer, Hubertus |
spellingShingle |
Wegner, Anna Gabrielli, P. Dick, Dorothee Ruth, Urs Kriews, Michael De Deckker, P. Barbante, C. Cozzi, G. Delmonte, B. Fischer, Hubertus Change in dust variability in the Atlantic sector of Antarctica at the end of the last deglaciation |
author_facet |
Wegner, Anna Gabrielli, P. Dick, Dorothee Ruth, Urs Kriews, Michael De Deckker, P. Barbante, C. Cozzi, G. Delmonte, B. Fischer, Hubertus |
author_sort |
Wegner, Anna |
title |
Change in dust variability in the Atlantic sector of Antarctica at the end of the last deglaciation |
title_short |
Change in dust variability in the Atlantic sector of Antarctica at the end of the last deglaciation |
title_full |
Change in dust variability in the Atlantic sector of Antarctica at the end of the last deglaciation |
title_fullStr |
Change in dust variability in the Atlantic sector of Antarctica at the end of the last deglaciation |
title_full_unstemmed |
Change in dust variability in the Atlantic sector of Antarctica at the end of the last deglaciation |
title_sort |
change in dust variability in the atlantic sector of antarctica at the end of the last deglaciation |
publisher |
Climate of the Past. |
publishDate |
2012 |
url |
https://epic.awi.de/id/eprint/23520/ https://epic.awi.de/id/eprint/23520/1/wegner2012_CP.pdf http://www.clim-past.net/8/135/2012/cp-8-135-2012.html https://hdl.handle.net/10013/epic.38734 https://hdl.handle.net/10013/epic.38734.d001 |
geographic |
Antarctic Dronning Maud Land New Zealand |
geographic_facet |
Antarctic Dronning Maud Land New Zealand |
genre |
Antarc* Antarctic Antarctica Dronning Maud Land EPICA ice core |
genre_facet |
Antarc* Antarctic Antarctica Dronning Maud Land EPICA ice core |
op_source |
EPIC3Climate of the Past., Climate of the Past., 8, pp. 135-147 |
op_relation |
https://epic.awi.de/id/eprint/23520/1/wegner2012_CP.pdf https://hdl.handle.net/10013/epic.38734.d001 Wegner, A. , Gabrielli, P. , Dick, D. , Ruth, U. , Kriews, M. , De Deckker, P. , Barbante, C. , Cozzi, G. , Delmonte, B. and Fischer, H. (2012) Change in dust variability in the Atlantic sector of Antarctica at the end of the last deglaciation , Climate of the Past., 8 , pp. 135-147 . doi:10.5194/cp-8-135-2012 <https://doi.org/10.5194/cp-8-135-2012> , hdl:10013/epic.38734 |
op_doi |
https://doi.org/10.5194/cp-8-135-2012 |
container_title |
Climate of the Past |
container_volume |
8 |
container_issue |
1 |
container_start_page |
135 |
op_container_end_page |
147 |
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1766245318338281472 |