Hydrological changes in the Mediterranean Sea over the last 30,000 years.
International audience [1] Sea surface temperatures were reconstructed over the last 30,000 years from alkenone paleothermometry (SST-alk) and planktonic foraminifera assemblages using the Modern Analog Technique (MAT) (SST-foram) along two cores of the Mediterranean Sea: MD84-632 (Levantine basin)...
Published in: | Geochemistry, Geophysics, Geosystems |
---|---|
Main Authors: | , , , , |
Other Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2007
|
Subjects: | |
Online Access: | https://hal.archives-ouvertes.fr/hal-00376528 https://hal.archives-ouvertes.fr/hal-00376528/document https://hal.archives-ouvertes.fr/hal-00376528/file/2007GC001587.pdf https://doi.org/10.1029/2007GC001587 |
id |
ftccsdartic:oai:HAL:hal-00376528v1 |
---|---|
record_format |
openpolar |
spelling |
ftccsdartic:oai:HAL:hal-00376528v1 2023-05-15T18:00:38+02:00 Hydrological changes in the Mediterranean Sea over the last 30,000 years. Essallami, L. Sicre, Marie-Alexandrine Kallel, Nejib Labeyrie, Laurent Siani, Giuseppe Faculté des Sciences de Sfax Université de Sfax - University of Sfax Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Paléocéanographie (PALEOCEAN) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Interactions et dynamique des environnements de surface (IDES) Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) 2007 https://hal.archives-ouvertes.fr/hal-00376528 https://hal.archives-ouvertes.fr/hal-00376528/document https://hal.archives-ouvertes.fr/hal-00376528/file/2007GC001587.pdf https://doi.org/10.1029/2007GC001587 en eng HAL CCSD AGU and the Geochemical Society info:eu-repo/semantics/altIdentifier/doi/10.1029/2007GC001587 hal-00376528 https://hal.archives-ouvertes.fr/hal-00376528 https://hal.archives-ouvertes.fr/hal-00376528/document https://hal.archives-ouvertes.fr/hal-00376528/file/2007GC001587.pdf doi:10.1029/2007GC001587 info:eu-repo/semantics/OpenAccess ISSN: 1525-2027 EISSN: 1525-2027 Geochemistry, Geophysics, Geosystems https://hal.archives-ouvertes.fr/hal-00376528 Geochemistry, Geophysics, Geosystems, AGU and the Geochemical Society, 2007, 8 (7), pp.Q07002. ⟨10.1029/2007GC001587⟩ foraminifera marine core alkenones paleoclimate glacial Mediterranean [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2007 ftccsdartic https://doi.org/10.1029/2007GC001587 2021-12-19T00:52:16Z International audience [1] Sea surface temperatures were reconstructed over the last 30,000 years from alkenone paleothermometry (SST-alk) and planktonic foraminifera assemblages using the Modern Analog Technique (MAT) (SST-foram) along two cores of the Mediterranean Sea: MD84-632 (Levantine basin) and MD04-2797 (Siculo-Tunisian Strait). Oxygen isotope of planktonic foraminifera G. bulloides for core MD04-2797 and G. ruber for core MD84-632 were also determined. SST-alk in the Levantine basin indicate colder values at the Last Glacial Maximum (LGM) ($14°C) than earlier established from MAT, and a cooling amplitude of 6°-7°C, comparable to the central Mediterranean Sea. Climatic events such as the Younger Dryas (YD) and Heinrich events 1 and 2 (H1 and H2) were times of significant cooling in the two cores. In the Eastern basin, values of local seawater oxygen isotope, dw, indicate relatively saltier waters during the LGM and deglaciation than today, with increasing dw values (higher salinity) in the Eastern basin and decreasing ones (lower salinity) in the central Mediterranean Sea, during cold stadials. The observed alterations of surface water properties (T and dw) in the central and eastern Mediterranean at the LGM are consistent with model experiments showing slightly lower evaporation in the Mediterranean than today, except for the Eastern basin. Article in Journal/Newspaper Planktonic foraminifera Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Geochemistry, Geophysics, Geosystems 8 7 n/a n/a |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
foraminifera marine core alkenones paleoclimate glacial Mediterranean [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
foraminifera marine core alkenones paleoclimate glacial Mediterranean [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Essallami, L. Sicre, Marie-Alexandrine Kallel, Nejib Labeyrie, Laurent Siani, Giuseppe Hydrological changes in the Mediterranean Sea over the last 30,000 years. |
topic_facet |
foraminifera marine core alkenones paleoclimate glacial Mediterranean [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience [1] Sea surface temperatures were reconstructed over the last 30,000 years from alkenone paleothermometry (SST-alk) and planktonic foraminifera assemblages using the Modern Analog Technique (MAT) (SST-foram) along two cores of the Mediterranean Sea: MD84-632 (Levantine basin) and MD04-2797 (Siculo-Tunisian Strait). Oxygen isotope of planktonic foraminifera G. bulloides for core MD04-2797 and G. ruber for core MD84-632 were also determined. SST-alk in the Levantine basin indicate colder values at the Last Glacial Maximum (LGM) ($14°C) than earlier established from MAT, and a cooling amplitude of 6°-7°C, comparable to the central Mediterranean Sea. Climatic events such as the Younger Dryas (YD) and Heinrich events 1 and 2 (H1 and H2) were times of significant cooling in the two cores. In the Eastern basin, values of local seawater oxygen isotope, dw, indicate relatively saltier waters during the LGM and deglaciation than today, with increasing dw values (higher salinity) in the Eastern basin and decreasing ones (lower salinity) in the central Mediterranean Sea, during cold stadials. The observed alterations of surface water properties (T and dw) in the central and eastern Mediterranean at the LGM are consistent with model experiments showing slightly lower evaporation in the Mediterranean than today, except for the Eastern basin. |
author2 |
Faculté des Sciences de Sfax Université de Sfax - University of Sfax Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Paléocéanographie (PALEOCEAN) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Interactions et dynamique des environnements de surface (IDES) Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Essallami, L. Sicre, Marie-Alexandrine Kallel, Nejib Labeyrie, Laurent Siani, Giuseppe |
author_facet |
Essallami, L. Sicre, Marie-Alexandrine Kallel, Nejib Labeyrie, Laurent Siani, Giuseppe |
author_sort |
Essallami, L. |
title |
Hydrological changes in the Mediterranean Sea over the last 30,000 years. |
title_short |
Hydrological changes in the Mediterranean Sea over the last 30,000 years. |
title_full |
Hydrological changes in the Mediterranean Sea over the last 30,000 years. |
title_fullStr |
Hydrological changes in the Mediterranean Sea over the last 30,000 years. |
title_full_unstemmed |
Hydrological changes in the Mediterranean Sea over the last 30,000 years. |
title_sort |
hydrological changes in the mediterranean sea over the last 30,000 years. |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.archives-ouvertes.fr/hal-00376528 https://hal.archives-ouvertes.fr/hal-00376528/document https://hal.archives-ouvertes.fr/hal-00376528/file/2007GC001587.pdf https://doi.org/10.1029/2007GC001587 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
ISSN: 1525-2027 EISSN: 1525-2027 Geochemistry, Geophysics, Geosystems https://hal.archives-ouvertes.fr/hal-00376528 Geochemistry, Geophysics, Geosystems, AGU and the Geochemical Society, 2007, 8 (7), pp.Q07002. ⟨10.1029/2007GC001587⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2007GC001587 hal-00376528 https://hal.archives-ouvertes.fr/hal-00376528 https://hal.archives-ouvertes.fr/hal-00376528/document https://hal.archives-ouvertes.fr/hal-00376528/file/2007GC001587.pdf doi:10.1029/2007GC001587 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2007GC001587 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
8 |
container_issue |
7 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1766169808594796544 |