Ross Ice Shelf Oxygen Isotopes and West Antarctic Climate History
The Ross Ice Shelf δ 18 O profile at station J-9 covers at least the last 30,000 yr. It identifies the depth in the core of ice from (i) the last glacial-interglacial transition (266 to 286 m) and (ii) the 1000-m surface elevation (about 140 m). Various processes contribute to the δ 18 O change obse...
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Cambridge University Press (CUP)
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crcambridgeupr:10.1016/0033-5894(86)90083-9 2024-06-09T07:40:21+00:00 Ross Ice Shelf Oxygen Isotopes and West Antarctic Climate History Grootes, Pieter M. Stuiver, Minze 1986 http://dx.doi.org/10.1016/0033-5894(86)90083-9 http://api.elsevier.com/content/article/PII:0033589486900839?httpAccept=text/xml http://api.elsevier.com/content/article/PII:0033589486900839?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400023206 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 26, issue 1, page 49-67 ISSN 0033-5894 1096-0287 journal-article 1986 crcambridgeupr https://doi.org/10.1016/0033-5894(86)90083-9 2024-05-15T13:08:28Z The Ross Ice Shelf δ 18 O profile at station J-9 covers at least the last 30,000 yr. It identifies the depth in the core of ice from (i) the last glacial-interglacial transition (266 to 286 m) and (ii) the 1000-m surface elevation (about 140 m). Various processes contribute to the δ 18 O change observed in the core: (i) climatic warming, mainly caused by a decrease in winter sea ice extent around Antarctica of about 6° latitude early in the glacial-interglacial transition, (ii) decreasing ice sheet thickness later in the glacial-interglacial transition and during the Holocene, and (iii) decreases in elevation and effective distance from the open ocean as the source of the ice in the core shifts along the flow line toward J-9. Average δ 18 O values of the last 3000 yr imply a fairly stable climate. Yet shorter (10 2 to 10 3 yr) δ 18 O climatic oscillations up to 6‰ are seen in both the Holocene and the glacial portion of the record. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Ross Ice Shelf Sea ice Cambridge University Press Antarctic Ross Ice Shelf Quaternary Research 26 1 49 67 |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
The Ross Ice Shelf δ 18 O profile at station J-9 covers at least the last 30,000 yr. It identifies the depth in the core of ice from (i) the last glacial-interglacial transition (266 to 286 m) and (ii) the 1000-m surface elevation (about 140 m). Various processes contribute to the δ 18 O change observed in the core: (i) climatic warming, mainly caused by a decrease in winter sea ice extent around Antarctica of about 6° latitude early in the glacial-interglacial transition, (ii) decreasing ice sheet thickness later in the glacial-interglacial transition and during the Holocene, and (iii) decreases in elevation and effective distance from the open ocean as the source of the ice in the core shifts along the flow line toward J-9. Average δ 18 O values of the last 3000 yr imply a fairly stable climate. Yet shorter (10 2 to 10 3 yr) δ 18 O climatic oscillations up to 6‰ are seen in both the Holocene and the glacial portion of the record. |
format |
Article in Journal/Newspaper |
author |
Grootes, Pieter M. Stuiver, Minze |
spellingShingle |
Grootes, Pieter M. Stuiver, Minze Ross Ice Shelf Oxygen Isotopes and West Antarctic Climate History |
author_facet |
Grootes, Pieter M. Stuiver, Minze |
author_sort |
Grootes, Pieter M. |
title |
Ross Ice Shelf Oxygen Isotopes and West Antarctic Climate History |
title_short |
Ross Ice Shelf Oxygen Isotopes and West Antarctic Climate History |
title_full |
Ross Ice Shelf Oxygen Isotopes and West Antarctic Climate History |
title_fullStr |
Ross Ice Shelf Oxygen Isotopes and West Antarctic Climate History |
title_full_unstemmed |
Ross Ice Shelf Oxygen Isotopes and West Antarctic Climate History |
title_sort |
ross ice shelf oxygen isotopes and west antarctic climate history |
publisher |
Cambridge University Press (CUP) |
publishDate |
1986 |
url |
http://dx.doi.org/10.1016/0033-5894(86)90083-9 http://api.elsevier.com/content/article/PII:0033589486900839?httpAccept=text/xml http://api.elsevier.com/content/article/PII:0033589486900839?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400023206 |
geographic |
Antarctic Ross Ice Shelf |
geographic_facet |
Antarctic Ross Ice Shelf |
genre |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Ross Ice Shelf Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Ross Ice Shelf Sea ice |
op_source |
Quaternary Research volume 26, issue 1, page 49-67 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1016/0033-5894(86)90083-9 |
container_title |
Quaternary Research |
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26 |
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1 |
container_start_page |
49 |
op_container_end_page |
67 |
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1801383774424924160 |