Black Sea hydroclimate and coupled hydrology was strongly controlled by high-latitude glacial climate dynamics
Abstract The Black Sea experienced pronounced millennial-scale changes in temperature and rainfall during the last glacial coinciding with Dansgaard-Oeschger cycles. However, little is known regarding the amount and sources of freshwater reaching this inland basin. Here, we present detailed ostracod...
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2021
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Online Access: | http://dx.doi.org/10.1038/s43247-021-00129-3 http://www.nature.com/articles/s43247-021-00129-3.pdf http://www.nature.com/articles/s43247-021-00129-3 |
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crspringernat:10.1038/s43247-021-00129-3 2023-05-15T16:40:31+02:00 Black Sea hydroclimate and coupled hydrology was strongly controlled by high-latitude glacial climate dynamics Wegwerth, Antje Plessen, Birgit Kleinhanns, Ilka C. Arz, Helge W. Deutsche Forschungsgemeinschaft 2021 http://dx.doi.org/10.1038/s43247-021-00129-3 http://www.nature.com/articles/s43247-021-00129-3.pdf http://www.nature.com/articles/s43247-021-00129-3 en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Communications Earth & Environment volume 2, issue 1 ISSN 2662-4435 General Earth and Planetary Sciences General Environmental Science journal-article 2021 crspringernat https://doi.org/10.1038/s43247-021-00129-3 2022-01-04T16:54:40Z Abstract The Black Sea experienced pronounced millennial-scale changes in temperature and rainfall during the last glacial coinciding with Dansgaard-Oeschger cycles. However, little is known regarding the amount and sources of freshwater reaching this inland basin. Here, we present detailed ostracod δ 18 O data from the glacial Black Sea showing subdued Dansgaard-Oeschger cyclicity and four prominent longer-term saw-tooth shaped Bond-like cycles. We propose that the δ 18 O ostracods signature primarily reflects changes in the atmospheric circulation in response to the waxing and waning Eurasian Ice Sheet. The millennial-scale ice sheet variations likely resulted not only in latitudinal migrations of atmospheric frontal systems but also in shifts of dominant moisture sources for the Black Sea. Heavier isotopic precipitation arrived from the North Atlantic-Mediterranean realm during the warmer interstadials and lighter isotopic precipitation from the Eurasian continental interior during the colder stadials. The subdued Dansgaard-Oeschger variability likely reflects an integrated precipitation signal additionally affected by the long mixing times of the large Black Sea volume up to 1,500 years as suggested from hydrologic-isotope-balance modelling. Article in Journal/Newspaper Ice Sheet North Atlantic Springer Nature (via Crossref) Communications Earth & Environment 2 1 |
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Springer Nature (via Crossref) |
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crspringernat |
language |
English |
topic |
General Earth and Planetary Sciences General Environmental Science |
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General Earth and Planetary Sciences General Environmental Science Wegwerth, Antje Plessen, Birgit Kleinhanns, Ilka C. Arz, Helge W. Black Sea hydroclimate and coupled hydrology was strongly controlled by high-latitude glacial climate dynamics |
topic_facet |
General Earth and Planetary Sciences General Environmental Science |
description |
Abstract The Black Sea experienced pronounced millennial-scale changes in temperature and rainfall during the last glacial coinciding with Dansgaard-Oeschger cycles. However, little is known regarding the amount and sources of freshwater reaching this inland basin. Here, we present detailed ostracod δ 18 O data from the glacial Black Sea showing subdued Dansgaard-Oeschger cyclicity and four prominent longer-term saw-tooth shaped Bond-like cycles. We propose that the δ 18 O ostracods signature primarily reflects changes in the atmospheric circulation in response to the waxing and waning Eurasian Ice Sheet. The millennial-scale ice sheet variations likely resulted not only in latitudinal migrations of atmospheric frontal systems but also in shifts of dominant moisture sources for the Black Sea. Heavier isotopic precipitation arrived from the North Atlantic-Mediterranean realm during the warmer interstadials and lighter isotopic precipitation from the Eurasian continental interior during the colder stadials. The subdued Dansgaard-Oeschger variability likely reflects an integrated precipitation signal additionally affected by the long mixing times of the large Black Sea volume up to 1,500 years as suggested from hydrologic-isotope-balance modelling. |
author2 |
Deutsche Forschungsgemeinschaft |
format |
Article in Journal/Newspaper |
author |
Wegwerth, Antje Plessen, Birgit Kleinhanns, Ilka C. Arz, Helge W. |
author_facet |
Wegwerth, Antje Plessen, Birgit Kleinhanns, Ilka C. Arz, Helge W. |
author_sort |
Wegwerth, Antje |
title |
Black Sea hydroclimate and coupled hydrology was strongly controlled by high-latitude glacial climate dynamics |
title_short |
Black Sea hydroclimate and coupled hydrology was strongly controlled by high-latitude glacial climate dynamics |
title_full |
Black Sea hydroclimate and coupled hydrology was strongly controlled by high-latitude glacial climate dynamics |
title_fullStr |
Black Sea hydroclimate and coupled hydrology was strongly controlled by high-latitude glacial climate dynamics |
title_full_unstemmed |
Black Sea hydroclimate and coupled hydrology was strongly controlled by high-latitude glacial climate dynamics |
title_sort |
black sea hydroclimate and coupled hydrology was strongly controlled by high-latitude glacial climate dynamics |
publisher |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1038/s43247-021-00129-3 http://www.nature.com/articles/s43247-021-00129-3.pdf http://www.nature.com/articles/s43247-021-00129-3 |
genre |
Ice Sheet North Atlantic |
genre_facet |
Ice Sheet North Atlantic |
op_source |
Communications Earth & Environment volume 2, issue 1 ISSN 2662-4435 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s43247-021-00129-3 |
container_title |
Communications Earth & Environment |
container_volume |
2 |
container_issue |
1 |
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1766030925784678400 |