Global Ice-Sheet System Interlocked by Sea Level
Denton and Hughes (1983, Quaternary Research 20, 125–144) postulated that sea level linked a global ice-sheet system with both terrestrial and grounded marine components during late Quaternary ice ages. Summer temperature changes near Northern Hemisphere melting margins initiated sea-level fluctuati...
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crcambridgeupr:10.1016/0033-5894(86)90081-5 2024-09-15T17:46:23+00:00 Global Ice-Sheet System Interlocked by Sea Level Denton, George H. Hughes, Terence J. Karlén, Wibjörn 1986 http://dx.doi.org/10.1016/0033-5894(86)90081-5 http://api.elsevier.com/content/article/PII:0033589486900815?httpAccept=text/xml http://api.elsevier.com/content/article/PII:0033589486900815?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400023188 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 26, issue 1, page 3-26 ISSN 0033-5894 1096-0287 journal-article 1986 crcambridgeupr https://doi.org/10.1016/0033-5894(86)90081-5 2024-07-17T04:04:06Z Denton and Hughes (1983, Quaternary Research 20, 125–144) postulated that sea level linked a global ice-sheet system with both terrestrial and grounded marine components during late Quaternary ice ages. Summer temperature changes near Northern Hemisphere melting margins initiated sea-level fluctuations that controlled marine components in both polar hemispheres. It was further proposed that variations of this ice-sheet system amplified and transmitted Milankovitch summer half-year insolation changes between 45 and 75°N into global climatic changes. New tests of this hypothesis implicate sea level as a major control of the areal extent of grounded portions of the Antarctic Ice Sheet, thus fitting the concept of a globally interlocked ice-sheet system. But recent atmospheric modeling results (Manabe and Broccoli, 1985, Journal of Geophysical Research 90, 2167–2190) suggest that factors other than areal changes of the grounded Antarctic Ice Sheet strongly influenced Southern Hemisphere climate and terminated the last ice age simultaneously in both polar hemispheres. Atmospheric carbon dioxide linked to high-latitude oceans is the most likely candidate (Shackleton and Pisias, 1985, Atmospheric carbon dioxide, orbital forcing, and climate. In “The Carbon Cycle and Atmospheric CO 2 : Natural Variations Archean to Present” (E. T. Sundquest and W. S. Broecker, Eds.), pp. 303–318. Geophysical Monograph 32, American Geophysical Union, Washington, D.C.), but another potential influence was high-frequency climatic oscillations (2500 yr). It is postulated that variations in atmospheric carbon dioxide acted through an Antarctic ice shelf linked to the grounded ice sheet to produce and terminate Southern Hemisphere ice-age climate. It is further postulated that Milankovitch summer insolation combined with a warm high-frequency oscillation caused marked recession of Northern Hemisphere ice-sheet melting margins and the North Atlantic polar front about 14,000 14 C yr B.P. This permitted renewed formation of North Atlantic Deep ... Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Ice Shelf North Atlantic Cambridge University Press Quaternary Research 26 1 3 26 |
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Denton and Hughes (1983, Quaternary Research 20, 125–144) postulated that sea level linked a global ice-sheet system with both terrestrial and grounded marine components during late Quaternary ice ages. Summer temperature changes near Northern Hemisphere melting margins initiated sea-level fluctuations that controlled marine components in both polar hemispheres. It was further proposed that variations of this ice-sheet system amplified and transmitted Milankovitch summer half-year insolation changes between 45 and 75°N into global climatic changes. New tests of this hypothesis implicate sea level as a major control of the areal extent of grounded portions of the Antarctic Ice Sheet, thus fitting the concept of a globally interlocked ice-sheet system. But recent atmospheric modeling results (Manabe and Broccoli, 1985, Journal of Geophysical Research 90, 2167–2190) suggest that factors other than areal changes of the grounded Antarctic Ice Sheet strongly influenced Southern Hemisphere climate and terminated the last ice age simultaneously in both polar hemispheres. Atmospheric carbon dioxide linked to high-latitude oceans is the most likely candidate (Shackleton and Pisias, 1985, Atmospheric carbon dioxide, orbital forcing, and climate. In “The Carbon Cycle and Atmospheric CO 2 : Natural Variations Archean to Present” (E. T. Sundquest and W. S. Broecker, Eds.), pp. 303–318. Geophysical Monograph 32, American Geophysical Union, Washington, D.C.), but another potential influence was high-frequency climatic oscillations (2500 yr). It is postulated that variations in atmospheric carbon dioxide acted through an Antarctic ice shelf linked to the grounded ice sheet to produce and terminate Southern Hemisphere ice-age climate. It is further postulated that Milankovitch summer insolation combined with a warm high-frequency oscillation caused marked recession of Northern Hemisphere ice-sheet melting margins and the North Atlantic polar front about 14,000 14 C yr B.P. This permitted renewed formation of North Atlantic Deep ... |
format |
Article in Journal/Newspaper |
author |
Denton, George H. Hughes, Terence J. Karlén, Wibjörn |
spellingShingle |
Denton, George H. Hughes, Terence J. Karlén, Wibjörn Global Ice-Sheet System Interlocked by Sea Level |
author_facet |
Denton, George H. Hughes, Terence J. Karlén, Wibjörn |
author_sort |
Denton, George H. |
title |
Global Ice-Sheet System Interlocked by Sea Level |
title_short |
Global Ice-Sheet System Interlocked by Sea Level |
title_full |
Global Ice-Sheet System Interlocked by Sea Level |
title_fullStr |
Global Ice-Sheet System Interlocked by Sea Level |
title_full_unstemmed |
Global Ice-Sheet System Interlocked by Sea Level |
title_sort |
global ice-sheet system interlocked by sea level |
publisher |
Cambridge University Press (CUP) |
publishDate |
1986 |
url |
http://dx.doi.org/10.1016/0033-5894(86)90081-5 http://api.elsevier.com/content/article/PII:0033589486900815?httpAccept=text/xml http://api.elsevier.com/content/article/PII:0033589486900815?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400023188 |
genre |
Antarc* Antarctic Ice Sheet Ice Shelf North Atlantic |
genre_facet |
Antarc* Antarctic Ice Sheet Ice Shelf North Atlantic |
op_source |
Quaternary Research volume 26, issue 1, page 3-26 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1016/0033-5894(86)90081-5 |
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Quaternary Research |
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26 |
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1 |
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26 |
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1810494468026007552 |