Weakening and strengthening of the Indian monsoon during Heinrich events and Dansgaard-Oeschger oscillations
The Dansgaard-Oeschger oscillations and Heinrich events described in North Atlantic sediments and Greenland ice are expressed in the climate of the tropics, for example, as documented in Arabian Sea sediments. Given the strength of this teleconnection, we seek to reconstruct its range of environment...
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ftnioz:oai:imis.nioz.nl:239896 2023-05-15T16:29:44+02:00 Weakening and strengthening of the Indian monsoon during Heinrich events and Dansgaard-Oeschger oscillations Deplazes, G. Lückge, A. Stuut, J.-B. Pätzold, J. Kuhlmann, H. Husson, D. Fant, M. Haug, G.H. 2014 application/pdf https://www.vliz.be/imisdocs/publications/44/260244.pdf en eng info:eu-repo/semantics/altIdentifier/wos/000333164100003 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1002/2013PA002509 https://www.vliz.be/imisdocs/publications/44/260244.pdf info:eu-repo/semantics/openAccess %3Ci%3EPaleoceanography+29%282%29%3C%2Fi%3E%3A+99-114.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1002%2F2013PA002509%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1002%2F2013PA002509%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2014 ftnioz https://doi.org/10.1002/2013PA002509 2022-05-01T13:59:12Z The Dansgaard-Oeschger oscillations and Heinrich events described in North Atlantic sediments and Greenland ice are expressed in the climate of the tropics, for example, as documented in Arabian Sea sediments. Given the strength of this teleconnection, we seek to reconstruct its range of environmental impacts. We present geochemical and sedimentological data from core SO130-289KL from the Indus submarine slope spanning the last similar to 80 kyr. Elemental and grain size analyses consistently indicate that interstadials are characterized by an increased contribution of fluvial suspension from the Indus River. In contrast, stadials are characterized by an increased contribution of aeolian dust from the Arabian Peninsula. Decadal-scale shifts at climate transitions, such as onsets of interstadials, were coeval with changes in productivity-related proxies. Heinrich events stand out as especially dry and dusty events, indicating a dramatically weakened Indian summer monsoon, potentially increased winter monsoon circulation, and increased aridity on the Arabian Peninsula. This finding is consistent with other paleoclimate evidence for continental aridity in the northern tropics during these events. Our results strengthen the evidence that circum-North Atlantic temperature variations translate to hydrological shifts in the tropics, with major impacts on regional environmental conditions such as rainfall, river discharge, aeolian dust transport, and ocean margin anoxia. Key Points Intensity of Indian monsoon is traced with geochemical and grain size analyses of sediments Fluvial versus aeolian sediment input to Arabian Sea mimics DO oscillations During Heinrich events the Indian monsoon weakened distinctly Article in Journal/Newspaper Greenland North Atlantic NIOZ Repository (Royal Netherlands Institute for Sea Research) Greenland Indian Paleoceanography 29 2 99 114 |
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Open Polar |
collection |
NIOZ Repository (Royal Netherlands Institute for Sea Research) |
op_collection_id |
ftnioz |
language |
English |
description |
The Dansgaard-Oeschger oscillations and Heinrich events described in North Atlantic sediments and Greenland ice are expressed in the climate of the tropics, for example, as documented in Arabian Sea sediments. Given the strength of this teleconnection, we seek to reconstruct its range of environmental impacts. We present geochemical and sedimentological data from core SO130-289KL from the Indus submarine slope spanning the last similar to 80 kyr. Elemental and grain size analyses consistently indicate that interstadials are characterized by an increased contribution of fluvial suspension from the Indus River. In contrast, stadials are characterized by an increased contribution of aeolian dust from the Arabian Peninsula. Decadal-scale shifts at climate transitions, such as onsets of interstadials, were coeval with changes in productivity-related proxies. Heinrich events stand out as especially dry and dusty events, indicating a dramatically weakened Indian summer monsoon, potentially increased winter monsoon circulation, and increased aridity on the Arabian Peninsula. This finding is consistent with other paleoclimate evidence for continental aridity in the northern tropics during these events. Our results strengthen the evidence that circum-North Atlantic temperature variations translate to hydrological shifts in the tropics, with major impacts on regional environmental conditions such as rainfall, river discharge, aeolian dust transport, and ocean margin anoxia. Key Points Intensity of Indian monsoon is traced with geochemical and grain size analyses of sediments Fluvial versus aeolian sediment input to Arabian Sea mimics DO oscillations During Heinrich events the Indian monsoon weakened distinctly |
format |
Article in Journal/Newspaper |
author |
Deplazes, G. Lückge, A. Stuut, J.-B. Pätzold, J. Kuhlmann, H. Husson, D. Fant, M. Haug, G.H. |
spellingShingle |
Deplazes, G. Lückge, A. Stuut, J.-B. Pätzold, J. Kuhlmann, H. Husson, D. Fant, M. Haug, G.H. Weakening and strengthening of the Indian monsoon during Heinrich events and Dansgaard-Oeschger oscillations |
author_facet |
Deplazes, G. Lückge, A. Stuut, J.-B. Pätzold, J. Kuhlmann, H. Husson, D. Fant, M. Haug, G.H. |
author_sort |
Deplazes, G. |
title |
Weakening and strengthening of the Indian monsoon during Heinrich events and Dansgaard-Oeschger oscillations |
title_short |
Weakening and strengthening of the Indian monsoon during Heinrich events and Dansgaard-Oeschger oscillations |
title_full |
Weakening and strengthening of the Indian monsoon during Heinrich events and Dansgaard-Oeschger oscillations |
title_fullStr |
Weakening and strengthening of the Indian monsoon during Heinrich events and Dansgaard-Oeschger oscillations |
title_full_unstemmed |
Weakening and strengthening of the Indian monsoon during Heinrich events and Dansgaard-Oeschger oscillations |
title_sort |
weakening and strengthening of the indian monsoon during heinrich events and dansgaard-oeschger oscillations |
publishDate |
2014 |
url |
https://www.vliz.be/imisdocs/publications/44/260244.pdf |
geographic |
Greenland Indian |
geographic_facet |
Greenland Indian |
genre |
Greenland North Atlantic |
genre_facet |
Greenland North Atlantic |
op_source |
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op_relation |
info:eu-repo/semantics/altIdentifier/wos/000333164100003 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1002/2013PA002509 https://www.vliz.be/imisdocs/publications/44/260244.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2013PA002509 |
container_title |
Paleoceanography |
container_volume |
29 |
container_issue |
2 |
container_start_page |
99 |
op_container_end_page |
114 |
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1766019437301858304 |