Investigation of a deep ice core from the Elbrus western plateau, the Caucasus, Russia
International audience A 182 m ice core was recovered from a borehole drilled into bedrock on the western plateau of Mt. Elbrus (43 • 20 53.9 N, 42 • 25 36.0 E; 5115 m a.s.l.) in the Cauca-sus, Russia, in 2009. This is the first ice core in the region that represents a paleoclimate record that is pr...
Published in: | The Cryosphere |
---|---|
Main Authors: | , , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2015
|
Subjects: | |
Online Access: | https://insu.hal.science/insu-01349498 https://insu.hal.science/insu-01349498/document https://insu.hal.science/insu-01349498/file/CRYOSPHERE%20-%20%20Investigation%20of%20a%20deep%20ice%20core%20from%20the%20Elbrus%20western%20plateau%20the%20Caucasus%20Russia.pdf https://doi.org/10.5194/tc-9-2253-2015 |
id |
ftunigrenoble:oai:HAL:insu-01349498v1 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
Université Grenoble Alpes: HAL |
op_collection_id |
ftunigrenoble |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Mikhalenko, V Sokratov, S Kutuzov, S Ginot, P Legrand, Michel Preunkert, S Lavrentiev, I Kozachek, A Ekaykin, A Faïn, X Lim, S Schotterer, U Lipenkov, V Toropov, P Investigation of a deep ice core from the Elbrus western plateau, the Caucasus, Russia |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience A 182 m ice core was recovered from a borehole drilled into bedrock on the western plateau of Mt. Elbrus (43 • 20 53.9 N, 42 • 25 36.0 E; 5115 m a.s.l.) in the Cauca-sus, Russia, in 2009. This is the first ice core in the region that represents a paleoclimate record that is practically undisturbed by seasonal melting. Relatively high snow accumulation rates at the drilling site enabled the analysis of the intraseasonal variability in climate proxies. Borehole temperatures ranged from −17 • C at 10 m depth to −2.4 • C at 182 m. A detailed radio-echo sounding survey showed that the glacier thickness ranged from 45 m near the marginal zone of the plateau up to 255 m at the glacier center. The ice core has been analyzed for stable isotopes (δ 18 O and δD), major ions (K + , Na + , Ca 2+ , Mg 2+ , NH + 4 , SO 2− 4 , NO − 3 , Cl − , F −), succinic acid (HOOCCH 2 COOH), and tritium content. The mean annual net accumulation rate of 1455 mm w.e. for the last 140 years was estimated from distinct annual oscillations of δ 18 O, δD, succinic acid, and NH + 4. Annual layer counting also helped date the ice core, agreeing with the absolute markers of the tritium 1963 bomb horizon located at the core depth of 50.7 m w.e. and the sulfate peak of the Katmai eruption (1912) at 87.7 m w.e. According to mathematical modeling results, the ice age at the maximum glacier depth is predicted to be ∼ 660 years BP. The 2009 borehole is located downstream from this point, resulting in an estimated basal ice age of less than 350–400 years BP at the drilling site. The glaciological and initial chemical analyses from the Elbrus ice core help reconstruct the atmospheric history of the European region. |
author2 |
Institute of Geography Russian Academy of Sciences Moscow (RAS) Arctic Environment Laboratory Lomonosov Moscow State University (MSU) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Arctic and Antarctic Research Institute (AARI) Russian Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet) Climate and Environmental Physics Bern (CEP) Physikalisches Institut Bern Universität Bern = University of Bern = Université de Berne (UNIBE)-Universität Bern = University of Bern = Université de Berne (UNIBE) |
format |
Article in Journal/Newspaper |
author |
Mikhalenko, V Sokratov, S Kutuzov, S Ginot, P Legrand, Michel Preunkert, S Lavrentiev, I Kozachek, A Ekaykin, A Faïn, X Lim, S Schotterer, U Lipenkov, V Toropov, P |
author_facet |
Mikhalenko, V Sokratov, S Kutuzov, S Ginot, P Legrand, Michel Preunkert, S Lavrentiev, I Kozachek, A Ekaykin, A Faïn, X Lim, S Schotterer, U Lipenkov, V Toropov, P |
author_sort |
Mikhalenko, V |
title |
Investigation of a deep ice core from the Elbrus western plateau, the Caucasus, Russia |
title_short |
Investigation of a deep ice core from the Elbrus western plateau, the Caucasus, Russia |
title_full |
Investigation of a deep ice core from the Elbrus western plateau, the Caucasus, Russia |
title_fullStr |
Investigation of a deep ice core from the Elbrus western plateau, the Caucasus, Russia |
title_full_unstemmed |
Investigation of a deep ice core from the Elbrus western plateau, the Caucasus, Russia |
title_sort |
investigation of a deep ice core from the elbrus western plateau, the caucasus, russia |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://insu.hal.science/insu-01349498 https://insu.hal.science/insu-01349498/document https://insu.hal.science/insu-01349498/file/CRYOSPHERE%20-%20%20Investigation%20of%20a%20deep%20ice%20core%20from%20the%20Elbrus%20western%20plateau%20the%20Caucasus%20Russia.pdf https://doi.org/10.5194/tc-9-2253-2015 |
genre |
ice core The Cryosphere |
genre_facet |
ice core The Cryosphere |
op_source |
ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://insu.hal.science/insu-01349498 The Cryosphere, 2015, 9, pp.2253-2270. ⟨10.5194/tc-9-2253-2015⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-9-2253-2015 insu-01349498 https://insu.hal.science/insu-01349498 https://insu.hal.science/insu-01349498/document https://insu.hal.science/insu-01349498/file/CRYOSPHERE%20-%20%20Investigation%20of%20a%20deep%20ice%20core%20from%20the%20Elbrus%20western%20plateau%20the%20Caucasus%20Russia.pdf doi:10.5194/tc-9-2253-2015 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/tc-9-2253-2015 |
container_title |
The Cryosphere |
container_volume |
9 |
container_issue |
6 |
container_start_page |
2253 |
op_container_end_page |
2270 |
_version_ |
1810449442710487040 |
spelling |
ftunigrenoble:oai:HAL:insu-01349498v1 2024-09-15T18:11:52+00:00 Investigation of a deep ice core from the Elbrus western plateau, the Caucasus, Russia Mikhalenko, V Sokratov, S Kutuzov, S Ginot, P Legrand, Michel Preunkert, S Lavrentiev, I Kozachek, A Ekaykin, A Faïn, X Lim, S Schotterer, U Lipenkov, V Toropov, P Institute of Geography Russian Academy of Sciences Moscow (RAS) Arctic Environment Laboratory Lomonosov Moscow State University (MSU) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Arctic and Antarctic Research Institute (AARI) Russian Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet) Climate and Environmental Physics Bern (CEP) Physikalisches Institut Bern Universität Bern = University of Bern = Université de Berne (UNIBE)-Universität Bern = University of Bern = Université de Berne (UNIBE) 2015-12 https://insu.hal.science/insu-01349498 https://insu.hal.science/insu-01349498/document https://insu.hal.science/insu-01349498/file/CRYOSPHERE%20-%20%20Investigation%20of%20a%20deep%20ice%20core%20from%20the%20Elbrus%20western%20plateau%20the%20Caucasus%20Russia.pdf https://doi.org/10.5194/tc-9-2253-2015 en eng HAL CCSD Copernicus info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-9-2253-2015 insu-01349498 https://insu.hal.science/insu-01349498 https://insu.hal.science/insu-01349498/document https://insu.hal.science/insu-01349498/file/CRYOSPHERE%20-%20%20Investigation%20of%20a%20deep%20ice%20core%20from%20the%20Elbrus%20western%20plateau%20the%20Caucasus%20Russia.pdf doi:10.5194/tc-9-2253-2015 info:eu-repo/semantics/OpenAccess ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://insu.hal.science/insu-01349498 The Cryosphere, 2015, 9, pp.2253-2270. ⟨10.5194/tc-9-2253-2015⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2015 ftunigrenoble https://doi.org/10.5194/tc-9-2253-2015 2024-07-29T23:39:57Z International audience A 182 m ice core was recovered from a borehole drilled into bedrock on the western plateau of Mt. Elbrus (43 • 20 53.9 N, 42 • 25 36.0 E; 5115 m a.s.l.) in the Cauca-sus, Russia, in 2009. This is the first ice core in the region that represents a paleoclimate record that is practically undisturbed by seasonal melting. Relatively high snow accumulation rates at the drilling site enabled the analysis of the intraseasonal variability in climate proxies. Borehole temperatures ranged from −17 • C at 10 m depth to −2.4 • C at 182 m. A detailed radio-echo sounding survey showed that the glacier thickness ranged from 45 m near the marginal zone of the plateau up to 255 m at the glacier center. The ice core has been analyzed for stable isotopes (δ 18 O and δD), major ions (K + , Na + , Ca 2+ , Mg 2+ , NH + 4 , SO 2− 4 , NO − 3 , Cl − , F −), succinic acid (HOOCCH 2 COOH), and tritium content. The mean annual net accumulation rate of 1455 mm w.e. for the last 140 years was estimated from distinct annual oscillations of δ 18 O, δD, succinic acid, and NH + 4. Annual layer counting also helped date the ice core, agreeing with the absolute markers of the tritium 1963 bomb horizon located at the core depth of 50.7 m w.e. and the sulfate peak of the Katmai eruption (1912) at 87.7 m w.e. According to mathematical modeling results, the ice age at the maximum glacier depth is predicted to be ∼ 660 years BP. The 2009 borehole is located downstream from this point, resulting in an estimated basal ice age of less than 350–400 years BP at the drilling site. The glaciological and initial chemical analyses from the Elbrus ice core help reconstruct the atmospheric history of the European region. Article in Journal/Newspaper ice core The Cryosphere Université Grenoble Alpes: HAL The Cryosphere 9 6 2253 2270 |