Increased dust deposition in the Pacific Southern Ocean during glacial periods
Artículo de publicación ISI Dust deposition in the Southern Ocean constitutes a critical modulator of past global climate variability, but how it has varied temporally and geographically is underdetermined. Here, we present data sets of glacial-interglacial dust-supply cycles from the largest Southe...
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ftunivchile:oai:repositorio.uchile.cl:2250/126931 2023-05-15T13:41:32+02:00 Increased dust deposition in the Pacific Southern Ocean during glacial periods Lamy, F. Gersonde, R. Winckler, G. Esper, O. Jaeschke, A. Kuhn, G. Ullermann, J. Martínez García, A. Lambert, F. Kilian, R. 2014 application/pdf https://repositorio.uchile.cl/handle/2250/126931 en eng American Association for the Advancement of Science Science, vol. 343, 24 january 2014 https://repositorio.uchile.cl/handle/2250/126931 Attribution-NonCommercial-NoDerivs 3.0 Chile http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ CC-BY-NC-ND Artículo de revista 2014 ftunivchile 2023-01-29T00:55:39Z Artículo de publicación ISI Dust deposition in the Southern Ocean constitutes a critical modulator of past global climate variability, but how it has varied temporally and geographically is underdetermined. Here, we present data sets of glacial-interglacial dust-supply cycles from the largest Southern Ocean sector, the polar South Pacific, indicating three times higher dust deposition during glacial periods than during interglacials for the past million years. Although the most likely dust source for the South Pacific is Australia and New Zealand, the glacial-interglacial pattern and timing of lithogenic sediment deposition is similar to dust records from Antarctica and the South Atlantic dominated by Patagonian sources. These similarities imply large-scale common climate forcings, such as latitudinal shifts of the southern westerlies and regionally enhanced glaciogenic dust mobilization in New Zealand and Patagonia. Article in Journal/Newspaper Antarc* Antarctica Southern Ocean Universidad de Chile: Repositorio académico Isi ENVELOPE(-38.550,-38.550,65.617,65.617) New Zealand Pacific Patagonia Southern Ocean |
institution |
Open Polar |
collection |
Universidad de Chile: Repositorio académico |
op_collection_id |
ftunivchile |
language |
English |
description |
Artículo de publicación ISI Dust deposition in the Southern Ocean constitutes a critical modulator of past global climate variability, but how it has varied temporally and geographically is underdetermined. Here, we present data sets of glacial-interglacial dust-supply cycles from the largest Southern Ocean sector, the polar South Pacific, indicating three times higher dust deposition during glacial periods than during interglacials for the past million years. Although the most likely dust source for the South Pacific is Australia and New Zealand, the glacial-interglacial pattern and timing of lithogenic sediment deposition is similar to dust records from Antarctica and the South Atlantic dominated by Patagonian sources. These similarities imply large-scale common climate forcings, such as latitudinal shifts of the southern westerlies and regionally enhanced glaciogenic dust mobilization in New Zealand and Patagonia. |
format |
Article in Journal/Newspaper |
author |
Lamy, F. Gersonde, R. Winckler, G. Esper, O. Jaeschke, A. Kuhn, G. Ullermann, J. Martínez García, A. Lambert, F. Kilian, R. |
spellingShingle |
Lamy, F. Gersonde, R. Winckler, G. Esper, O. Jaeschke, A. Kuhn, G. Ullermann, J. Martínez García, A. Lambert, F. Kilian, R. Increased dust deposition in the Pacific Southern Ocean during glacial periods |
author_facet |
Lamy, F. Gersonde, R. Winckler, G. Esper, O. Jaeschke, A. Kuhn, G. Ullermann, J. Martínez García, A. Lambert, F. Kilian, R. |
author_sort |
Lamy, F. |
title |
Increased dust deposition in the Pacific Southern Ocean during glacial periods |
title_short |
Increased dust deposition in the Pacific Southern Ocean during glacial periods |
title_full |
Increased dust deposition in the Pacific Southern Ocean during glacial periods |
title_fullStr |
Increased dust deposition in the Pacific Southern Ocean during glacial periods |
title_full_unstemmed |
Increased dust deposition in the Pacific Southern Ocean during glacial periods |
title_sort |
increased dust deposition in the pacific southern ocean during glacial periods |
publisher |
American Association for the Advancement of Science |
publishDate |
2014 |
url |
https://repositorio.uchile.cl/handle/2250/126931 |
long_lat |
ENVELOPE(-38.550,-38.550,65.617,65.617) |
geographic |
Isi New Zealand Pacific Patagonia Southern Ocean |
geographic_facet |
Isi New Zealand Pacific Patagonia Southern Ocean |
genre |
Antarc* Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctica Southern Ocean |
op_relation |
Science, vol. 343, 24 january 2014 https://repositorio.uchile.cl/handle/2250/126931 |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 Chile http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ |
op_rightsnorm |
CC-BY-NC-ND |
_version_ |
1766151748963008512 |