Ice cores and climatic change
The paper deals primarily with the use of stable isotopic ratios to determine the former climate of ice sheets. Studies of temperature profiles throughout ice sheets have shown that for at least several thousand years, changes of isotopic δ ratios have been proportional to changes of surface tempera...
Published in: | Philosophical Transactions of the Royal Society of London. B, Biological Sciences |
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Language: | English |
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The Royal Society
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Online Access: | http://dx.doi.org/10.1098/rstb.1977.0103 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.1977.0103 |
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crroyalsociety:10.1098/rstb.1977.0103 2024-06-02T07:57:09+00:00 Ice cores and climatic change 1977 http://dx.doi.org/10.1098/rstb.1977.0103 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.1977.0103 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Philosophical Transactions of the Royal Society of London. B, Biological Sciences volume 280, issue 972, page 143-168 ISSN 0080-4622 2054-0280 journal-article 1977 crroyalsociety https://doi.org/10.1098/rstb.1977.0103 2024-05-07T14:16:19Z The paper deals primarily with the use of stable isotopic ratios to determine the former climate of ice sheets. Studies of temperature profiles throughout ice sheets have shown that for at least several thousand years, changes of isotopic δ ratios have been proportional to changes of surface temperatures; this relationship is discussed in terms of the physical processes involved. It is considered reasonable to use a similar relation for earlier periods in Antarctica, but in Greenland the relation may have varied with time. When determining past climates from the isotopic record, allowances have to be made for changes in the flow and thickness of ice sheets during major glacial periods. These factors are considered in relation to major ice cores from Vostok and Byrd stations in Antarctica and from Camp Century in Greenland. Vostok is the simplest case glaciologically, Camp Century the most complex. On purely glaciological grounds it appears that the ice age gave way to present-day climates some 10 000 ± 1000 a B.P., the coldest period being 20 000 + 3000 a B.P., when the climate in Antarctica was 6-8 °C colder than at present. Glaciological data suggest a duration of 50 000 to 100 000 years for the last ice age. Before this period, climates in Greenland and Antarctica appear to have been around 2-3 °C warmer than at present. Article in Journal/Newspaper Antarc* Antarctica Greenland The Royal Society Greenland Byrd Philosophical Transactions of the Royal Society of London. B, Biological Sciences 280 972 143 168 |
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The Royal Society |
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crroyalsociety |
language |
English |
description |
The paper deals primarily with the use of stable isotopic ratios to determine the former climate of ice sheets. Studies of temperature profiles throughout ice sheets have shown that for at least several thousand years, changes of isotopic δ ratios have been proportional to changes of surface temperatures; this relationship is discussed in terms of the physical processes involved. It is considered reasonable to use a similar relation for earlier periods in Antarctica, but in Greenland the relation may have varied with time. When determining past climates from the isotopic record, allowances have to be made for changes in the flow and thickness of ice sheets during major glacial periods. These factors are considered in relation to major ice cores from Vostok and Byrd stations in Antarctica and from Camp Century in Greenland. Vostok is the simplest case glaciologically, Camp Century the most complex. On purely glaciological grounds it appears that the ice age gave way to present-day climates some 10 000 ± 1000 a B.P., the coldest period being 20 000 + 3000 a B.P., when the climate in Antarctica was 6-8 °C colder than at present. Glaciological data suggest a duration of 50 000 to 100 000 years for the last ice age. Before this period, climates in Greenland and Antarctica appear to have been around 2-3 °C warmer than at present. |
format |
Article in Journal/Newspaper |
title |
Ice cores and climatic change |
spellingShingle |
Ice cores and climatic change |
title_short |
Ice cores and climatic change |
title_full |
Ice cores and climatic change |
title_fullStr |
Ice cores and climatic change |
title_full_unstemmed |
Ice cores and climatic change |
title_sort |
ice cores and climatic change |
publisher |
The Royal Society |
publishDate |
1977 |
url |
http://dx.doi.org/10.1098/rstb.1977.0103 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.1977.0103 |
geographic |
Greenland Byrd |
geographic_facet |
Greenland Byrd |
genre |
Antarc* Antarctica Greenland |
genre_facet |
Antarc* Antarctica Greenland |
op_source |
Philosophical Transactions of the Royal Society of London. B, Biological Sciences volume 280, issue 972, page 143-168 ISSN 0080-4622 2054-0280 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rstb.1977.0103 |
container_title |
Philosophical Transactions of the Royal Society of London. B, Biological Sciences |
container_volume |
280 |
container_issue |
972 |
container_start_page |
143 |
op_container_end_page |
168 |
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1800739182629355520 |