Identifying the provenance and quantifying the contribution of dust sources in EPICA Dronning Maud Land ice core (Antarctica) over the last deglaciation (7–27 kyr BP): A high-resolution, quantitative record from a new Rare Earth Element mixing model
Antarctic ice cores have revealed the interplay between dust and climate in the Southern Hemisphere. Yet, so far, no continuous record of dust provenance has been established through the last deglaciation. Here, using a new database of 207 Rare Earth Element (REE) patterns measured in dust and sedim...
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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/359162 2024-06-23T07:47:51+00:00 Identifying the provenance and quantifying the contribution of dust sources in EPICA Dronning Maud Land ice core (Antarctica) over the last deglaciation (7–27 kyr BP): A high-resolution, quantitative record from a new Rare Earth Element mixing model Vanderstraeten, Aubry Mattielli, Nadine Laruelle, Goulven Gildas Gili, Stefania Bory, Aloys Gabrielli, Paolo Boxho, Sibylle Tison, Jean-Louis Bonneville, Steeve 2023-04 1 full-text file(s): application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/359162 https://dipot.ulb.ac.be/dspace/bitstream/2013/359162/3/STOTEN_version_07_04_23.pdf en eng uri/info:doi/10.1016/j.scitotenv.2023.163450 uri/info:pii/S0048969723020697 uri/info:pmid/37061058 uri/info:scp/85152594251 https://dipot.ulb.ac.be/dspace/bitstream/2013/359162/3/STOTEN_version_07_04_23.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/359162 1 full-text file(s): info:eu-repo/semantics/openAccess Science of the total environment, 881 Glaciologie Géochimie Antarctica Dust provenance EDML Ice core REE info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2023 ftunivbruxelles 2024-06-11T14:20:32Z Antarctic ice cores have revealed the interplay between dust and climate in the Southern Hemisphere. Yet, so far, no continuous record of dust provenance has been established through the last deglaciation. Here, using a new database of 207 Rare Earth Element (REE) patterns measured in dust and sediments/soils from well-known potential source areas (PSA) of the Southern Hemisphere, we developed a statistical model combining those inputs to provide the best fit to the REE patterns measured in EPICA Dronning Maud Land (EDML) ice core (E. Antarctica). Out of 398 samples measured in the EDML core, 386 samples have been un-mixed with statistical significance. Combined with the total atmospheric deposition, we quantified the dust flux from each PSA to EDML between 7 and 27 kyr BP. Our results reveal that the dust composition was relatively uniform up until 14.5 kyr BP despite a large drop in atmospheric deposition at ∼18 kyr with a large contribution from Patagonia yielding ∼68 % of total dust deposition. The remaining dust was supplied from Australia (14–15 %), Southern Africa (∼9 %), New Zealand (∼3–4 %) and Puna-Altiplano (∼2–3 %). The most striking change occurred ∼14.5 kyr BP when Patagonia dropped below 50 % on average while low-latitude PSA increased their contributions to 21–23 % for Southern Africa, 13–21 % for Australia and ∼ 4–10 % for Puna-Altiplano. We argue that this shift is linked to long-lasting changes in the hydrology of Patagonian rivers and to sudden acceleration of the submersion of Patagonian shelf at 14.5 kyr BP, highlighting a relationship between dust composition and eustatic sea level. Early Holocene dust composition is highly variable, with Patagonian contribution being still prevalent, at ∼50 % on average. Provided a good coverage of local and distal PSA, our statistical model based on REE pattern offers a straightforward and cost-effective method to trace dust source in ice cores. SCOPUS: ar.j info:eu-repo/semantics/published Article in Journal/Newspaper Antarc* Antarctic Antarctica Dronning Maud Land E. Antarctica EPICA ice core DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) Antarctic Patagonia Dronning Maud Land New Zealand |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Glaciologie Géochimie Antarctica Dust provenance EDML Ice core REE |
spellingShingle |
Glaciologie Géochimie Antarctica Dust provenance EDML Ice core REE Vanderstraeten, Aubry Mattielli, Nadine Laruelle, Goulven Gildas Gili, Stefania Bory, Aloys Gabrielli, Paolo Boxho, Sibylle Tison, Jean-Louis Bonneville, Steeve Identifying the provenance and quantifying the contribution of dust sources in EPICA Dronning Maud Land ice core (Antarctica) over the last deglaciation (7–27 kyr BP): A high-resolution, quantitative record from a new Rare Earth Element mixing model |
topic_facet |
Glaciologie Géochimie Antarctica Dust provenance EDML Ice core REE |
description |
Antarctic ice cores have revealed the interplay between dust and climate in the Southern Hemisphere. Yet, so far, no continuous record of dust provenance has been established through the last deglaciation. Here, using a new database of 207 Rare Earth Element (REE) patterns measured in dust and sediments/soils from well-known potential source areas (PSA) of the Southern Hemisphere, we developed a statistical model combining those inputs to provide the best fit to the REE patterns measured in EPICA Dronning Maud Land (EDML) ice core (E. Antarctica). Out of 398 samples measured in the EDML core, 386 samples have been un-mixed with statistical significance. Combined with the total atmospheric deposition, we quantified the dust flux from each PSA to EDML between 7 and 27 kyr BP. Our results reveal that the dust composition was relatively uniform up until 14.5 kyr BP despite a large drop in atmospheric deposition at ∼18 kyr with a large contribution from Patagonia yielding ∼68 % of total dust deposition. The remaining dust was supplied from Australia (14–15 %), Southern Africa (∼9 %), New Zealand (∼3–4 %) and Puna-Altiplano (∼2–3 %). The most striking change occurred ∼14.5 kyr BP when Patagonia dropped below 50 % on average while low-latitude PSA increased their contributions to 21–23 % for Southern Africa, 13–21 % for Australia and ∼ 4–10 % for Puna-Altiplano. We argue that this shift is linked to long-lasting changes in the hydrology of Patagonian rivers and to sudden acceleration of the submersion of Patagonian shelf at 14.5 kyr BP, highlighting a relationship between dust composition and eustatic sea level. Early Holocene dust composition is highly variable, with Patagonian contribution being still prevalent, at ∼50 % on average. Provided a good coverage of local and distal PSA, our statistical model based on REE pattern offers a straightforward and cost-effective method to trace dust source in ice cores. SCOPUS: ar.j info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Vanderstraeten, Aubry Mattielli, Nadine Laruelle, Goulven Gildas Gili, Stefania Bory, Aloys Gabrielli, Paolo Boxho, Sibylle Tison, Jean-Louis Bonneville, Steeve |
author_facet |
Vanderstraeten, Aubry Mattielli, Nadine Laruelle, Goulven Gildas Gili, Stefania Bory, Aloys Gabrielli, Paolo Boxho, Sibylle Tison, Jean-Louis Bonneville, Steeve |
author_sort |
Vanderstraeten, Aubry |
title |
Identifying the provenance and quantifying the contribution of dust sources in EPICA Dronning Maud Land ice core (Antarctica) over the last deglaciation (7–27 kyr BP): A high-resolution, quantitative record from a new Rare Earth Element mixing model |
title_short |
Identifying the provenance and quantifying the contribution of dust sources in EPICA Dronning Maud Land ice core (Antarctica) over the last deglaciation (7–27 kyr BP): A high-resolution, quantitative record from a new Rare Earth Element mixing model |
title_full |
Identifying the provenance and quantifying the contribution of dust sources in EPICA Dronning Maud Land ice core (Antarctica) over the last deglaciation (7–27 kyr BP): A high-resolution, quantitative record from a new Rare Earth Element mixing model |
title_fullStr |
Identifying the provenance and quantifying the contribution of dust sources in EPICA Dronning Maud Land ice core (Antarctica) over the last deglaciation (7–27 kyr BP): A high-resolution, quantitative record from a new Rare Earth Element mixing model |
title_full_unstemmed |
Identifying the provenance and quantifying the contribution of dust sources in EPICA Dronning Maud Land ice core (Antarctica) over the last deglaciation (7–27 kyr BP): A high-resolution, quantitative record from a new Rare Earth Element mixing model |
title_sort |
identifying the provenance and quantifying the contribution of dust sources in epica dronning maud land ice core (antarctica) over the last deglaciation (7–27 kyr bp): a high-resolution, quantitative record from a new rare earth element mixing model |
publishDate |
2023 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/359162 https://dipot.ulb.ac.be/dspace/bitstream/2013/359162/3/STOTEN_version_07_04_23.pdf |
geographic |
Antarctic Patagonia Dronning Maud Land New Zealand |
geographic_facet |
Antarctic Patagonia Dronning Maud Land New Zealand |
genre |
Antarc* Antarctic Antarctica Dronning Maud Land E. Antarctica EPICA ice core |
genre_facet |
Antarc* Antarctic Antarctica Dronning Maud Land E. Antarctica EPICA ice core |
op_source |
Science of the total environment, 881 |
op_relation |
uri/info:doi/10.1016/j.scitotenv.2023.163450 uri/info:pii/S0048969723020697 uri/info:pmid/37061058 uri/info:scp/85152594251 https://dipot.ulb.ac.be/dspace/bitstream/2013/359162/3/STOTEN_version_07_04_23.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/359162 |
op_rights |
1 full-text file(s): info:eu-repo/semantics/openAccess |
_version_ |
1802638071246618624 |