Monsoon variability and deep oceanic circulation in the western equatorial Pacific over the last climatic cycle: Insights from sedimentary magnetic properties and sortable silt
Magnetic and grain size properties of a sediment core located in the western equatorial Pacific, off the southeastern tip of the Philippine island of Mindanao, are presented in an effort to reconstruct past changes in the East Asian Monsoon and deep ocean circulation during the last 160 kyrs. The se...
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ftarchimer:oai:archimer.ifremer.fr:31854 2023-05-15T13:50:49+02:00 Monsoon variability and deep oceanic circulation in the western equatorial Pacific over the last climatic cycle: Insights from sedimentary magnetic properties and sortable silt Kissel, Catherine Laj, Carlo Kienast, Markus Bolliet, Timothe Holbourn, Ann Hill, Paul Kuhnt, Wolfgang Braconnot, Pascale 2010-09 application/pdf https://archimer.ifremer.fr/doc/00207/31854/30262.pdf https://doi.org/10.1029/2010PA001980 https://archimer.ifremer.fr/doc/00207/31854/ eng eng Amer Geophysical Union https://archimer.ifremer.fr/doc/00207/31854/30262.pdf doi:10.1029/2010PA001980 https://archimer.ifremer.fr/doc/00207/31854/ Copyright 2010 by the American Geophysical Union. info:eu-repo/semantics/openAccess restricted use Paleoceanography (0883-8305) (Amer Geophysical Union), 2010-09 , Vol. 25 , N. PA3215 , P. 1-12 north atlantic grain size water core mindanao paleoceanography susceptibility anisotropy remanence Iceland text Publication info:eu-repo/semantics/article 2010 ftarchimer https://doi.org/10.1029/2010PA001980 2021-09-23T20:24:50Z Magnetic and grain size properties of a sediment core located in the western equatorial Pacific, off the southeastern tip of the Philippine island of Mindanao, are presented in an effort to reconstruct past changes in the East Asian Monsoon and deep ocean circulation during the last 160 kyrs. The sedimentary concentration of magnetic particles, interpreted to reflect past changes in runoff from Mindanao, varies almost in antiphase with Northern Hemisphere insolation. This suggests that precipitation was lower in the western equatorial Pacific region during boreal insolation maxima and thus corroborates model results showing opposing trends in precipitation between land and the marine realm there. Variations in the grain size distribution of the inorganic sediment fraction, as recorded by both the sortable silt mean size and the magnetic grain size, provide a monitor of changes in sediment reworking by bottom currents. The close correlation of this proxy of bottom current strength and the benthic delta(18)O record from the same site implies a tight coupling between deep water flow, most likely Antarctic Intermediate Water (AAIW), and global climate. Article in Journal/Newspaper Antarc* Antarctic Iceland North Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Antarctic Pacific Paleoceanography 25 3 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
north atlantic grain size water core mindanao paleoceanography susceptibility anisotropy remanence Iceland |
spellingShingle |
north atlantic grain size water core mindanao paleoceanography susceptibility anisotropy remanence Iceland Kissel, Catherine Laj, Carlo Kienast, Markus Bolliet, Timothe Holbourn, Ann Hill, Paul Kuhnt, Wolfgang Braconnot, Pascale Monsoon variability and deep oceanic circulation in the western equatorial Pacific over the last climatic cycle: Insights from sedimentary magnetic properties and sortable silt |
topic_facet |
north atlantic grain size water core mindanao paleoceanography susceptibility anisotropy remanence Iceland |
description |
Magnetic and grain size properties of a sediment core located in the western equatorial Pacific, off the southeastern tip of the Philippine island of Mindanao, are presented in an effort to reconstruct past changes in the East Asian Monsoon and deep ocean circulation during the last 160 kyrs. The sedimentary concentration of magnetic particles, interpreted to reflect past changes in runoff from Mindanao, varies almost in antiphase with Northern Hemisphere insolation. This suggests that precipitation was lower in the western equatorial Pacific region during boreal insolation maxima and thus corroborates model results showing opposing trends in precipitation between land and the marine realm there. Variations in the grain size distribution of the inorganic sediment fraction, as recorded by both the sortable silt mean size and the magnetic grain size, provide a monitor of changes in sediment reworking by bottom currents. The close correlation of this proxy of bottom current strength and the benthic delta(18)O record from the same site implies a tight coupling between deep water flow, most likely Antarctic Intermediate Water (AAIW), and global climate. |
format |
Article in Journal/Newspaper |
author |
Kissel, Catherine Laj, Carlo Kienast, Markus Bolliet, Timothe Holbourn, Ann Hill, Paul Kuhnt, Wolfgang Braconnot, Pascale |
author_facet |
Kissel, Catherine Laj, Carlo Kienast, Markus Bolliet, Timothe Holbourn, Ann Hill, Paul Kuhnt, Wolfgang Braconnot, Pascale |
author_sort |
Kissel, Catherine |
title |
Monsoon variability and deep oceanic circulation in the western equatorial Pacific over the last climatic cycle: Insights from sedimentary magnetic properties and sortable silt |
title_short |
Monsoon variability and deep oceanic circulation in the western equatorial Pacific over the last climatic cycle: Insights from sedimentary magnetic properties and sortable silt |
title_full |
Monsoon variability and deep oceanic circulation in the western equatorial Pacific over the last climatic cycle: Insights from sedimentary magnetic properties and sortable silt |
title_fullStr |
Monsoon variability and deep oceanic circulation in the western equatorial Pacific over the last climatic cycle: Insights from sedimentary magnetic properties and sortable silt |
title_full_unstemmed |
Monsoon variability and deep oceanic circulation in the western equatorial Pacific over the last climatic cycle: Insights from sedimentary magnetic properties and sortable silt |
title_sort |
monsoon variability and deep oceanic circulation in the western equatorial pacific over the last climatic cycle: insights from sedimentary magnetic properties and sortable silt |
publisher |
Amer Geophysical Union |
publishDate |
2010 |
url |
https://archimer.ifremer.fr/doc/00207/31854/30262.pdf https://doi.org/10.1029/2010PA001980 https://archimer.ifremer.fr/doc/00207/31854/ |
geographic |
Antarctic Pacific |
geographic_facet |
Antarctic Pacific |
genre |
Antarc* Antarctic Iceland North Atlantic |
genre_facet |
Antarc* Antarctic Iceland North Atlantic |
op_source |
Paleoceanography (0883-8305) (Amer Geophysical Union), 2010-09 , Vol. 25 , N. PA3215 , P. 1-12 |
op_relation |
https://archimer.ifremer.fr/doc/00207/31854/30262.pdf doi:10.1029/2010PA001980 https://archimer.ifremer.fr/doc/00207/31854/ |
op_rights |
Copyright 2010 by the American Geophysical Union. info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1029/2010PA001980 |
container_title |
Paleoceanography |
container_volume |
25 |
container_issue |
3 |
_version_ |
1766254117618974720 |