Potential of Lake Ohrid for long palaeoclimatic and palaeoenvironemental records: The last glacial-interglacial cycle (140 ka)
International audience Lake Ohrid (Albania, Macedonia) is probably the oldest and one of the deepest lakes in Europe. It potentially provides a continuous palaeoenvironmental record over the entire Quaternary. In 2004, a 10-m-long sediment record (JO2004-1) was recovered from the south-western part...
Main Authors: | , , , , , , , , , , , |
---|---|
Other Authors: | , , , , , , , , , , , , , , |
Format: | Conference Object |
Language: | English |
Published: |
HAL CCSD
2009
|
Subjects: | |
Online Access: | https://hal.science/hal-02899303 |
id |
ftceafr:oai:HAL:hal-02899303v1 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
op_collection_id |
ftceafr |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Belmecheri, Soumaya von Grafenstein, Ulrich Namiotko, T. Robert, C.M. Andersen, N. Danielopol, Dan L. Caron, Benoît Bordon, A. Regnier, D. Mazaud, A. Sulpizio, R. Zanchetta, Giovanni Potential of Lake Ohrid for long palaeoclimatic and palaeoenvironemental records: The last glacial-interglacial cycle (140 ka) |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience Lake Ohrid (Albania, Macedonia) is probably the oldest and one of the deepest lakes in Europe. It potentially provides a continuous palaeoenvironmental record over the entire Quaternary. In 2004, a 10-m-long sediment record (JO2004-1) was recovered from the south-western part of the lake from a depth of 100 m (40°55.000 N, 20°40.297 E). The record is a composite of two series of consecutive 3-m-long sections taken from two sites within 5 m lateral distance using a modified Streif-Livingston piston corer (UWITEC, Austria). On the basis of seven AMS radiocarbon dating, five tephras layers and derived accumulation rate model, the Ohrid sequence extends back to 140 ka. It covers the last glacial-interglacial cycle with nearly continuous sedimentation (0.075 mm/yr, on average), except for a major hiatus (at 532.4 cm) of roughly 12,000 years between 102.75 and 89.90 ka. We evaluate the potential of using the oxygen and carbon isotope signature of the calcite of the benthic ostracod valves deposited in Lake Ohrid sediments as a palaeoclimate proxy. Twelve ostracod species, which are all endemic to Lake Ohrid, were preserved only during the interglacial phases. Their absence during full glacial periods is most likely due to calcium carbonate under-saturation of the lake water, when permafrost prohibited infiltration of atmospheric water into the limestone complexes in the lake drainage basin. For periods with ostracod preservation, the oxygen isotope signature of ostracod calcite is a reliable measure of the oxygen isotope composition of past lake water. However, the climatic interpretation of this record is strongly biased by water balance variations and by varying contribution of different vapour sources. The carbon isotope record of ostracods responds more consistently to climatic changes, and is a potentially quantifiable proxy for vegetation cover and soil build-up. Ostracod preservation and oxygen and carbon isotopes both record a succession of glacial-interglacial cycles and are therefore ... |
author2 |
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)) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) University of Gdańsk (UG) Karl-Franzens-Universität Graz Institut des Sciences de la Terre de Paris (iSTeP) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) Climat et Magnétisme (CLIMAG) CIRISIVU Dpto Geomineralogico Università degli studi di Bari Aldo Moro = University of Bari Aldo Moro (UNIBA) Dipartimiento di Scienze della Terra University of Pisa - Università di Pisa |
format |
Conference Object |
author |
Belmecheri, Soumaya von Grafenstein, Ulrich Namiotko, T. Robert, C.M. Andersen, N. Danielopol, Dan L. Caron, Benoît Bordon, A. Regnier, D. Mazaud, A. Sulpizio, R. Zanchetta, Giovanni |
author_facet |
Belmecheri, Soumaya von Grafenstein, Ulrich Namiotko, T. Robert, C.M. Andersen, N. Danielopol, Dan L. Caron, Benoît Bordon, A. Regnier, D. Mazaud, A. Sulpizio, R. Zanchetta, Giovanni |
author_sort |
Belmecheri, Soumaya |
title |
Potential of Lake Ohrid for long palaeoclimatic and palaeoenvironemental records: The last glacial-interglacial cycle (140 ka) |
title_short |
Potential of Lake Ohrid for long palaeoclimatic and palaeoenvironemental records: The last glacial-interglacial cycle (140 ka) |
title_full |
Potential of Lake Ohrid for long palaeoclimatic and palaeoenvironemental records: The last glacial-interglacial cycle (140 ka) |
title_fullStr |
Potential of Lake Ohrid for long palaeoclimatic and palaeoenvironemental records: The last glacial-interglacial cycle (140 ka) |
title_full_unstemmed |
Potential of Lake Ohrid for long palaeoclimatic and palaeoenvironemental records: The last glacial-interglacial cycle (140 ka) |
title_sort |
potential of lake ohrid for long palaeoclimatic and palaeoenvironemental records: the last glacial-interglacial cycle (140 ka) |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://hal.science/hal-02899303 |
op_coverage |
San Diego, United States |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
AGU Fall Meeting https://hal.science/hal-02899303 AGU Fall Meeting, 2009, San Diego, United States |
op_relation |
hal-02899303 https://hal.science/hal-02899303 |
_version_ |
1801381084202532864 |
spelling |
ftceafr:oai:HAL:hal-02899303v1 2024-06-09T07:49:01+00:00 Potential of Lake Ohrid for long palaeoclimatic and palaeoenvironemental records: The last glacial-interglacial cycle (140 ka) Belmecheri, Soumaya von Grafenstein, Ulrich Namiotko, T. Robert, C.M. Andersen, N. Danielopol, Dan L. Caron, Benoît Bordon, A. Regnier, D. Mazaud, A. Sulpizio, R. Zanchetta, Giovanni 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)) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) University of Gdańsk (UG) Karl-Franzens-Universität Graz Institut des Sciences de la Terre de Paris (iSTeP) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) Climat et Magnétisme (CLIMAG) CIRISIVU Dpto Geomineralogico Università degli studi di Bari Aldo Moro = University of Bari Aldo Moro (UNIBA) Dipartimiento di Scienze della Terra University of Pisa - Università di Pisa San Diego, United States 2009 https://hal.science/hal-02899303 en eng HAL CCSD hal-02899303 https://hal.science/hal-02899303 AGU Fall Meeting https://hal.science/hal-02899303 AGU Fall Meeting, 2009, San Diego, United States [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/conferenceObject Conference poster 2009 ftceafr 2024-05-16T14:55:00Z International audience Lake Ohrid (Albania, Macedonia) is probably the oldest and one of the deepest lakes in Europe. It potentially provides a continuous palaeoenvironmental record over the entire Quaternary. In 2004, a 10-m-long sediment record (JO2004-1) was recovered from the south-western part of the lake from a depth of 100 m (40°55.000 N, 20°40.297 E). The record is a composite of two series of consecutive 3-m-long sections taken from two sites within 5 m lateral distance using a modified Streif-Livingston piston corer (UWITEC, Austria). On the basis of seven AMS radiocarbon dating, five tephras layers and derived accumulation rate model, the Ohrid sequence extends back to 140 ka. It covers the last glacial-interglacial cycle with nearly continuous sedimentation (0.075 mm/yr, on average), except for a major hiatus (at 532.4 cm) of roughly 12,000 years between 102.75 and 89.90 ka. We evaluate the potential of using the oxygen and carbon isotope signature of the calcite of the benthic ostracod valves deposited in Lake Ohrid sediments as a palaeoclimate proxy. Twelve ostracod species, which are all endemic to Lake Ohrid, were preserved only during the interglacial phases. Their absence during full glacial periods is most likely due to calcium carbonate under-saturation of the lake water, when permafrost prohibited infiltration of atmospheric water into the limestone complexes in the lake drainage basin. For periods with ostracod preservation, the oxygen isotope signature of ostracod calcite is a reliable measure of the oxygen isotope composition of past lake water. However, the climatic interpretation of this record is strongly biased by water balance variations and by varying contribution of different vapour sources. The carbon isotope record of ostracods responds more consistently to climatic changes, and is a potentially quantifiable proxy for vegetation cover and soil build-up. Ostracod preservation and oxygen and carbon isotopes both record a succession of glacial-interglacial cycles and are therefore ... Conference Object permafrost HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |