Impact of the Holocene climate variability on the Adriatic paleohydrology
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 (δ18Ow) 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-01115422 https://hal.science/hal-01115422/document https://hal.science/hal-01115422/file/cp-9-499-2013.pdf https://doi.org/10.5194/cp-9-499-2013 |
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Open Polar |
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Université de Nantes: HAL-UNIV-NANTES |
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English |
topic |
[SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
spellingShingle |
[SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Siani, G. Magny, M. Paterne, M. Debret, Maxime Fontugne, Michel Impact of the Holocene climate variability on the Adriatic paleohydrology |
topic_facet |
[SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
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 (δ18Ow) 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 δ18Ow/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 δ18Ow/salinity lowering delineate the sapropel S1 interruption and the post-sapropel phase between 7.3 to 6.3 ka. After 6 ka, centennial-scale δ18Ow and G. bulloides δ13C 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 ... |
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)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Géochrononologie Traceurs Archéométrie (GEOTRAC) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) The publication of this article is financed by CNRS-INSU |
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 |
Impact of the Holocene climate variability on the Adriatic paleohydrology |
title_short |
Impact of the Holocene climate variability on the Adriatic paleohydrology |
title_full |
Impact of the Holocene climate variability on the Adriatic paleohydrology |
title_fullStr |
Impact of the Holocene climate variability on the Adriatic paleohydrology |
title_full_unstemmed |
Impact of the Holocene climate variability on the Adriatic paleohydrology |
title_sort |
impact of the holocene climate variability on the adriatic paleohydrology |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://hal.science/hal-01115422 https://hal.science/hal-01115422/document https://hal.science/hal-01115422/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-01115422 Climate of the Past, 2013, 9 (1), pp.499-515. ⟨10.5194/cp-9-499-2013⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-9-499-2013 hal-01115422 https://hal.science/hal-01115422 https://hal.science/hal-01115422/document https://hal.science/hal-01115422/file/cp-9-499-2013.pdf doi:10.5194/cp-9-499-2013 |
op_rights |
http://creativecommons.org/licenses/by/ 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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1766170466501787648 |
spelling |
ftunivnantes:oai:HAL:hal-01115422v1 2023-05-15T18:01:07+02:00 Impact of the Holocene climate variability on the Adriatic paleohydrology 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)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Géochrononologie Traceurs Archéométrie (GEOTRAC) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) The publication of this article is financed by CNRS-INSU 2013 https://hal.science/hal-01115422 https://hal.science/hal-01115422/document https://hal.science/hal-01115422/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-01115422 https://hal.science/hal-01115422 https://hal.science/hal-01115422/document https://hal.science/hal-01115422/file/cp-9-499-2013.pdf doi:10.5194/cp-9-499-2013 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-01115422 Climate of the Past, 2013, 9 (1), pp.499-515. ⟨10.5194/cp-9-499-2013⟩ [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology info:eu-repo/semantics/article Journal articles 2013 ftunivnantes https://doi.org/10.5194/cp-9-499-2013 2023-02-08T05:31:34Z 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 (δ18Ow) 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 δ18Ow/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 δ18Ow/salinity lowering delineate the sapropel S1 interruption and the post-sapropel phase between 7.3 to 6.3 ka. After 6 ka, centennial-scale δ18Ow and G. bulloides δ13C 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 ... Article in Journal/Newspaper Planktonic foraminifera Université de Nantes: HAL-UNIV-NANTES Climate of the Past 9 1 499 515 |