Paleohydrology reconstruction and Holocene climate variability in the South Adriatic Sea
International audience Holocene paleohydrology reconstruction is derived combining planktonic and benthic stable oxygen and carbon isotopes, sea surface temperatures (SSTs) and oxygen isotope composition of seawater ( 18Ow) from a high sedimentation core collected in the South Adriatic Sea (SAS). Co...
Published in: | Climate of the Past |
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Main Authors: | , , , , |
Other Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2013
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Online Access: | https://hal.science/hal-00861199 https://hal.science/hal-00861199/document https://hal.science/hal-00861199/file/cp-9-499-2013.pdf https://doi.org/10.5194/cp-9-499-2013 |
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Archives ouvertes de Paris-Saclay |
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English |
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Panoply [SDU]Sciences of the Universe [physics] |
spellingShingle |
Panoply [SDU]Sciences of the Universe [physics] Siani, G. Magny, M. Paterne, M. Debret, Maxime Fontugne, Michel Paleohydrology reconstruction and Holocene climate variability in the South Adriatic Sea |
topic_facet |
Panoply [SDU]Sciences of the Universe [physics] |
description |
International audience Holocene paleohydrology reconstruction is derived combining planktonic and benthic stable oxygen and carbon isotopes, sea surface temperatures (SSTs) and oxygen isotope composition of seawater ( 18Ow) from a high sedimentation core collected in the South Adriatic Sea (SAS). Core chronology is based on 10 AMS 14C measures on planktonic foraminifera and tephra layers. Results reveal two contrasted paleohydrological periods that reflect (i) a marked lowering of 18Ow/salinity during the early to mid-Holocene (11.5 ka to 6.3 ka), including the two-step sapropel S1 deposition, followed during the mid- to upper Holocene by (ii) a prevailing period of increased salinity and enhanced arid conditions in the South Adriatic Basin. Superimposed on these trends, short-term centennial-scale hydrological events punctuated the Holocene period in the SAS. During the early to mid-Holocene, two main SST coolings together with prominent 18Ow/salinity lowering delineate the sapropel S1 interruption and the post-sapropel phase between 7.3 to 6.3 ka. After 6 ka, centennial-scale 18Ow and G. bulloides 13C lowering, mostly centered between 3 to 0.6 ka, reflect short-term hydrological changes related to more intensive runoff of the Po and/or Apennine rivers. These short-term events, even of lesser amplitude compared to the early to mid-Holocene period, may have induced a lowering of sea surface density and consequently reduced and/or inhibited the formation of deep bottom waters in the SAS. Comparison of the emerging centennial- to millennial-scale hydrological record with previous climatic records from the central Mediterranean area and north of the Alps reveal possible synchronicities (within the radiocarbon-dating uncertainty) between phases of lower salinity in the SAS and periods of wetter climatic conditions around the north-central Adriatic Sea. Finally, wavelet analyses provide new clues about the potential origin of climate variability in the SAS, confirming the evidence for a mid-Holocene transition in ... |
author2 |
Géosciences Paris Sud (GEOPS) Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) Laboratoire Chrono-environnement (UMR 6249) (LCE) Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) 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)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Géochrononologie Traceurs Archéométrie (GEOTRAC) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-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)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Morphodynamique Continentale et Côtière (M2C) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rouen Normandie (UNIROUEN) Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Siani, G. Magny, M. Paterne, M. Debret, Maxime Fontugne, Michel |
author_facet |
Siani, G. Magny, M. Paterne, M. Debret, Maxime Fontugne, Michel |
author_sort |
Siani, G. |
title |
Paleohydrology reconstruction and Holocene climate variability in the South Adriatic Sea |
title_short |
Paleohydrology reconstruction and Holocene climate variability in the South Adriatic Sea |
title_full |
Paleohydrology reconstruction and Holocene climate variability in the South Adriatic Sea |
title_fullStr |
Paleohydrology reconstruction and Holocene climate variability in the South Adriatic Sea |
title_full_unstemmed |
Paleohydrology reconstruction and Holocene climate variability in the South Adriatic Sea |
title_sort |
paleohydrology reconstruction and holocene climate variability in the south adriatic sea |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://hal.science/hal-00861199 https://hal.science/hal-00861199/document https://hal.science/hal-00861199/file/cp-9-499-2013.pdf https://doi.org/10.5194/cp-9-499-2013 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-00861199 Climate of the Past, 2013, 9, pp.499-515. ⟨10.5194/cp-9-499-2013⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-9-499-2013 hal-00861199 https://hal.science/hal-00861199 https://hal.science/hal-00861199/document https://hal.science/hal-00861199/file/cp-9-499-2013.pdf doi:10.5194/cp-9-499-2013 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/cp-9-499-2013 |
container_title |
Climate of the Past |
container_volume |
9 |
container_issue |
1 |
container_start_page |
499 |
op_container_end_page |
515 |
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1811644029832527872 |
spelling |
ftuniparissaclay:oai:HAL:hal-00861199v1 2024-09-30T14:41:33+00:00 Paleohydrology reconstruction and Holocene climate variability in the South Adriatic Sea Siani, G. Magny, M. Paterne, M. Debret, Maxime Fontugne, Michel Géosciences Paris Sud (GEOPS) Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) Laboratoire Chrono-environnement (UMR 6249) (LCE) Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) 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)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Géochrononologie Traceurs Archéométrie (GEOTRAC) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-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)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Morphodynamique Continentale et Côtière (M2C) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rouen Normandie (UNIROUEN) Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS) 2013 https://hal.science/hal-00861199 https://hal.science/hal-00861199/document https://hal.science/hal-00861199/file/cp-9-499-2013.pdf https://doi.org/10.5194/cp-9-499-2013 en eng HAL CCSD European Geosciences Union (EGU) info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-9-499-2013 hal-00861199 https://hal.science/hal-00861199 https://hal.science/hal-00861199/document https://hal.science/hal-00861199/file/cp-9-499-2013.pdf doi:10.5194/cp-9-499-2013 info:eu-repo/semantics/OpenAccess ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-00861199 Climate of the Past, 2013, 9, pp.499-515. ⟨10.5194/cp-9-499-2013⟩ Panoply [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2013 ftuniparissaclay https://doi.org/10.5194/cp-9-499-2013 2024-09-06T00:30:34Z International audience Holocene paleohydrology reconstruction is derived combining planktonic and benthic stable oxygen and carbon isotopes, sea surface temperatures (SSTs) and oxygen isotope composition of seawater ( 18Ow) from a high sedimentation core collected in the South Adriatic Sea (SAS). Core chronology is based on 10 AMS 14C measures on planktonic foraminifera and tephra layers. Results reveal two contrasted paleohydrological periods that reflect (i) a marked lowering of 18Ow/salinity during the early to mid-Holocene (11.5 ka to 6.3 ka), including the two-step sapropel S1 deposition, followed during the mid- to upper Holocene by (ii) a prevailing period of increased salinity and enhanced arid conditions in the South Adriatic Basin. Superimposed on these trends, short-term centennial-scale hydrological events punctuated the Holocene period in the SAS. During the early to mid-Holocene, two main SST coolings together with prominent 18Ow/salinity lowering delineate the sapropel S1 interruption and the post-sapropel phase between 7.3 to 6.3 ka. After 6 ka, centennial-scale 18Ow and G. bulloides 13C lowering, mostly centered between 3 to 0.6 ka, reflect short-term hydrological changes related to more intensive runoff of the Po and/or Apennine rivers. These short-term events, even of lesser amplitude compared to the early to mid-Holocene period, may have induced a lowering of sea surface density and consequently reduced and/or inhibited the formation of deep bottom waters in the SAS. Comparison of the emerging centennial- to millennial-scale hydrological record with previous climatic records from the central Mediterranean area and north of the Alps reveal possible synchronicities (within the radiocarbon-dating uncertainty) between phases of lower salinity in the SAS and periods of wetter climatic conditions around the north-central Adriatic Sea. Finally, wavelet analyses provide new clues about the potential origin of climate variability in the SAS, confirming the evidence for a mid-Holocene transition in ... Article in Journal/Newspaper Planktonic foraminifera Archives ouvertes de Paris-Saclay Climate of the Past 9 1 499 515 |