Iceberg Discharges into the North Atlantic on Millennial Time Scales During the Last Glaciation
High-resolution studies of North Atlantic deep sea cores demonstrate that prominent increases in iceberg calving recurred at intervals of 2000 to 3000 years, much more frequently than the 7000- to 10,000-year pacing of massive ice discharges associated with Heinrich events. The calving cycles correl...
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Language: | English |
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American Association for the Advancement of Science (AAAS)
1995
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Online Access: | http://dx.doi.org/10.1126/science.267.5200.1005 https://www.science.org/doi/pdf/10.1126/science.267.5200.1005 |
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craaas:10.1126/science.267.5200.1005 2024-06-23T07:52:20+00:00 Iceberg Discharges into the North Atlantic on Millennial Time Scales During the Last Glaciation Bond, Gerard C. Lotti, Rusty 1995 http://dx.doi.org/10.1126/science.267.5200.1005 https://www.science.org/doi/pdf/10.1126/science.267.5200.1005 en eng American Association for the Advancement of Science (AAAS) Science volume 267, issue 5200, page 1005-1010 ISSN 0036-8075 1095-9203 journal-article 1995 craaas https://doi.org/10.1126/science.267.5200.1005 2024-06-13T04:01:13Z High-resolution studies of North Atlantic deep sea cores demonstrate that prominent increases in iceberg calving recurred at intervals of 2000 to 3000 years, much more frequently than the 7000- to 10,000-year pacing of massive ice discharges associated with Heinrich events. The calving cycles correlate with warm-cold oscillations, called Dansgaard-Oeschger events, in Greenland ice cores. Each cycle records synchronous discharges of ice from different sources, and the cycles are decoupled from sea-surface temperatures. These findings point to a mechanism operating within the atmosphere that caused rapid oscillations in air temperatures above Greenland and in calving from more than one ice sheet. Article in Journal/Newspaper Dansgaard-Oeschger events Greenland Greenland ice cores Ice Sheet North Atlantic AAAS Resource Center (American Association for the Advancement of Science) Greenland Science 267 5200 1005 1010 |
institution |
Open Polar |
collection |
AAAS Resource Center (American Association for the Advancement of Science) |
op_collection_id |
craaas |
language |
English |
description |
High-resolution studies of North Atlantic deep sea cores demonstrate that prominent increases in iceberg calving recurred at intervals of 2000 to 3000 years, much more frequently than the 7000- to 10,000-year pacing of massive ice discharges associated with Heinrich events. The calving cycles correlate with warm-cold oscillations, called Dansgaard-Oeschger events, in Greenland ice cores. Each cycle records synchronous discharges of ice from different sources, and the cycles are decoupled from sea-surface temperatures. These findings point to a mechanism operating within the atmosphere that caused rapid oscillations in air temperatures above Greenland and in calving from more than one ice sheet. |
format |
Article in Journal/Newspaper |
author |
Bond, Gerard C. Lotti, Rusty |
spellingShingle |
Bond, Gerard C. Lotti, Rusty Iceberg Discharges into the North Atlantic on Millennial Time Scales During the Last Glaciation |
author_facet |
Bond, Gerard C. Lotti, Rusty |
author_sort |
Bond, Gerard C. |
title |
Iceberg Discharges into the North Atlantic on Millennial Time Scales During the Last Glaciation |
title_short |
Iceberg Discharges into the North Atlantic on Millennial Time Scales During the Last Glaciation |
title_full |
Iceberg Discharges into the North Atlantic on Millennial Time Scales During the Last Glaciation |
title_fullStr |
Iceberg Discharges into the North Atlantic on Millennial Time Scales During the Last Glaciation |
title_full_unstemmed |
Iceberg Discharges into the North Atlantic on Millennial Time Scales During the Last Glaciation |
title_sort |
iceberg discharges into the north atlantic on millennial time scales during the last glaciation |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
1995 |
url |
http://dx.doi.org/10.1126/science.267.5200.1005 https://www.science.org/doi/pdf/10.1126/science.267.5200.1005 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Dansgaard-Oeschger events Greenland Greenland ice cores Ice Sheet North Atlantic |
genre_facet |
Dansgaard-Oeschger events Greenland Greenland ice cores Ice Sheet North Atlantic |
op_source |
Science volume 267, issue 5200, page 1005-1010 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.267.5200.1005 |
container_title |
Science |
container_volume |
267 |
container_issue |
5200 |
container_start_page |
1005 |
op_container_end_page |
1010 |
_version_ |
1802643612219998208 |