Holocene climate variability in the western Mediterranean region from a deepwater sediment record
16 pages, 2 tables, 6 figures.
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Format: | artículo biblioteca |
Language: | English |
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American Geophysical Union
2007-05-04
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Subjects: | Paleoceanography: Abrupt/rapid climate change, Marine Geology and Geophysics, Marine sediments: Processes and transport, Paleoceanography: Insolation forcing, Thermohaline, Insolation forcing, Geochemistry: Sedimentary geochemistry, |
Online Access: | http://hdl.handle.net/10261/10569 |
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dig-idaea-es-10261-105692020-07-03T12:19:40Z Holocene climate variability in the western Mediterranean region from a deepwater sediment record Frigola, Jaime Moreno Caballud, Ana Cacho, Isabel Canals, Miquel Sierro, Francisco Javier Flores, José Abel Grimalt, Joan O. Hodell, David A. Curtis, Jason H. Paleoceanography: Abrupt/rapid climate change Marine Geology and Geophysics Marine sediments: Processes and transport Paleoceanography: Insolation forcing Thermohaline Insolation forcing Geochemistry: Sedimentary geochemistry 16 pages, 2 tables, 6 figures. The detailed analysis of the International Marine Past Global Changes Study core MD99-2343 recovered from a sediment drift at 2391 m water depth north of the island of Minorca illustrates the effects of climate variability on thermohaline circulation in the western Mediterranean during the last 12 kyr. Geochemical ratios associated with terrigenous input resulted in the identification of four phases representing different climatic and deepwater overturning conditions in the Western Mediterranean Basin during the Holocene. Superimposed on the general trend, eight centennial- to millennial-scale abrupt events appear consistently in both grain size and geochemical records, which supports the occurrence of episodes of deepwater overturning reinforcement in the Western Mediterranean Basin. The observed periodicity for these abrupt events is in agreement with the previously defined Holocene cooling events of the North Atlantic region, thus supporting a strong Atlantic Mediterranean climatic link at high-frequency time intervais during the last 12 kyr. The rapid response of the Mediterranean thermohaline circulation to climate change in the North Atlantic stresses the importance of atmospheric teleconnections in transferring c1imate variability from high latitudes to midlatitudes. Funding by the European Commission Fifth and Sixth Framework Programmes to projects ADIOS (EVK3-2000- 00035), PROMESS 1 (EVR1-CT-2002-40024), EUROSTRATAFORM (EVK3-2002-00079), and HERMES (GOCE-CT-2005-5 11234-1) supported the research effort behind this paper. The Spanish-funded BTE2002-04670 and REN2003-08642-C02-02 projects are equally acknowledged. We are especially grateful to the Marion Dufresne and the IMAGES programirie that enabled the collection of cores MD99-2343 and MD95-2043. GRC Geociències Marines is recognized within the Generalitat de Catalunya excellence research groups program (reference 2005SGR 00152). We thank M. Guart (Departament d’Estratigrafia, Paleontologia i Geociències Marines, University of Barcelona) and E. Seguí (Serveis Cientifico-Técnics, University of Barcelona) for their help with the laboratory work and G. Lastras and D. Amblas for their help with the artwork. The Editor G. Dickens, J. B. Stuut, and two anonymous reviewers are greatly acknowledged for their positive comments on an earlier version of the manuscript. COMER Foundation and 13P postdoctoral programme (CSIC) are also acknowledged for their support to I. Cacho and A. Moreno, respectively. J. Frigola benefited from a fellowship of the University of Barcelona. Peer reviewed 2009-02-11T09:12:20Z 2009-02-11T09:12:20Z 2007-05-04 artículo http://purl.org/coar/resource_type/c_6501 Paleoceanography 22(2): PA2209 (2007) 0883-8305 http://hdl.handle.net/10261/10569 10.1029/2006PA001307 en http://dx.doi.org/10.1029/2006PA001307 open 162 bytes application/msword American Geophysical Union |
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Paleoceanography: Abrupt/rapid climate change Marine Geology and Geophysics Marine sediments: Processes and transport Paleoceanography: Insolation forcing Thermohaline Insolation forcing Geochemistry: Sedimentary geochemistry Paleoceanography: Abrupt/rapid climate change Marine Geology and Geophysics Marine sediments: Processes and transport Paleoceanography: Insolation forcing Thermohaline Insolation forcing Geochemistry: Sedimentary geochemistry |
spellingShingle |
Paleoceanography: Abrupt/rapid climate change Marine Geology and Geophysics Marine sediments: Processes and transport Paleoceanography: Insolation forcing Thermohaline Insolation forcing Geochemistry: Sedimentary geochemistry Paleoceanography: Abrupt/rapid climate change Marine Geology and Geophysics Marine sediments: Processes and transport Paleoceanography: Insolation forcing Thermohaline Insolation forcing Geochemistry: Sedimentary geochemistry Frigola, Jaime Moreno Caballud, Ana Cacho, Isabel Canals, Miquel Sierro, Francisco Javier Flores, José Abel Grimalt, Joan O. Hodell, David A. Curtis, Jason H. Holocene climate variability in the western Mediterranean region from a deepwater sediment record |
description |
16 pages, 2 tables, 6 figures. |
format |
artículo |
topic_facet |
Paleoceanography: Abrupt/rapid climate change Marine Geology and Geophysics Marine sediments: Processes and transport Paleoceanography: Insolation forcing Thermohaline Insolation forcing Geochemistry: Sedimentary geochemistry |
author |
Frigola, Jaime Moreno Caballud, Ana Cacho, Isabel Canals, Miquel Sierro, Francisco Javier Flores, José Abel Grimalt, Joan O. Hodell, David A. Curtis, Jason H. |
author_facet |
Frigola, Jaime Moreno Caballud, Ana Cacho, Isabel Canals, Miquel Sierro, Francisco Javier Flores, José Abel Grimalt, Joan O. Hodell, David A. Curtis, Jason H. |
author_sort |
Frigola, Jaime |
title |
Holocene climate variability in the western Mediterranean region from a deepwater sediment record |
title_short |
Holocene climate variability in the western Mediterranean region from a deepwater sediment record |
title_full |
Holocene climate variability in the western Mediterranean region from a deepwater sediment record |
title_fullStr |
Holocene climate variability in the western Mediterranean region from a deepwater sediment record |
title_full_unstemmed |
Holocene climate variability in the western Mediterranean region from a deepwater sediment record |
title_sort |
holocene climate variability in the western mediterranean region from a deepwater sediment record |
publisher |
American Geophysical Union |
publishDate |
2007-05-04 |
url |
http://hdl.handle.net/10261/10569 |
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