Eight centuries of volcanic signal and climate change at Talos Dome (East Antarctica)
During 1996 PNRA – ITASE traverse two firn cores were retrieved from the Talos Dome area (East Antarctica) at elevations of 2316 m (TD, 89 m long) and 2246 m (ST556, 19 m long). Cores were dated by using seasonal variations in nss SO42- concentrations coupled with the recognition of tritium marker l...
Published in: | Journal of Geophysical Research: Atmospheres |
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Online Access: | http://hdl.handle.net/10278/3536128 https://doi.org/10.1029/2000JD000317 |
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ftuniveneziairis:oai:iris.unive.it:10278/3536128 2024-04-14T08:01:20+00:00 Eight centuries of volcanic signal and climate change at Talos Dome (East Antarctica) STENNI, Barbara Proposito M. Gragnani R. Flora O. Jouzel J. Falourd S. Frezzotti M. Stenni, Barbara Proposito, M. Gragnani, R. Flora, O. Jouzel, J. Falourd, S. Frezzotti M. 2002 http://hdl.handle.net/10278/3536128 https://doi.org/10.1029/2000JD000317 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000178894800002 volume:107 issue:D9 journal:JOURNAL OF GEOPHYSICAL RESEARCH http://hdl.handle.net/10278/3536128 doi:10.1029/2000JD000317 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84933533660 info:eu-repo/semantics/closedAccess Settore GEO/08 - Geochimica e Vulcanologia info:eu-repo/semantics/article 2002 ftuniveneziairis https://doi.org/10.1029/2000JD000317 2024-03-21T18:16:57Z During 1996 PNRA – ITASE traverse two firn cores were retrieved from the Talos Dome area (East Antarctica) at elevations of 2316 m (TD, 89 m long) and 2246 m (ST556, 19 m long). Cores were dated by using seasonal variations in nss SO42- concentrations coupled with the recognition of tritium marker level (1965-66) and nss SO42- spikes due to the most important volcanic events in the past (Pinatubo 1991, Agung 1963, Krakatoa 1883, Tambora 1815, Kuwae 1452, Unknown 1259). The number of annual layers recognised in the TD and ST556 cores were 779 and 97 respectively. The δD record obtained from the TD core has been compared with others East Antarctic isotope ice core records (Dome C EPICA, South Pole, Taylor Dome). These records suggests cooler climate conditions between the middle of 16th and the beginning of 19th centuries, which might be related to the Little Ice Age (LIA) cold period. Due to the high degree of geographical variability, the strongest LIA cooling was not temporally synchronous over East Antarctica and the analysed records do not provide a coherent picture for East Antarctica. The accumulation rate record presented for the TD core shows a decrease during part of the LIA followed by an increment of about 11% in accumulation during the 20th century. At the ST556 site, the accumulation rate observed during the 20th century was quite stable. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica EPICA ice core South pole South pole Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Antarctic East Antarctica South Pole Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) Taylor Dome ENVELOPE(157.667,157.667,-77.667,-77.667) Journal of Geophysical Research: Atmospheres 107 D9 ACL 3-1 ACL 3-13 |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
English |
topic |
Settore GEO/08 - Geochimica e Vulcanologia |
spellingShingle |
Settore GEO/08 - Geochimica e Vulcanologia STENNI, Barbara Proposito M. Gragnani R. Flora O. Jouzel J. Falourd S. Frezzotti M. Eight centuries of volcanic signal and climate change at Talos Dome (East Antarctica) |
topic_facet |
Settore GEO/08 - Geochimica e Vulcanologia |
description |
During 1996 PNRA – ITASE traverse two firn cores were retrieved from the Talos Dome area (East Antarctica) at elevations of 2316 m (TD, 89 m long) and 2246 m (ST556, 19 m long). Cores were dated by using seasonal variations in nss SO42- concentrations coupled with the recognition of tritium marker level (1965-66) and nss SO42- spikes due to the most important volcanic events in the past (Pinatubo 1991, Agung 1963, Krakatoa 1883, Tambora 1815, Kuwae 1452, Unknown 1259). The number of annual layers recognised in the TD and ST556 cores were 779 and 97 respectively. The δD record obtained from the TD core has been compared with others East Antarctic isotope ice core records (Dome C EPICA, South Pole, Taylor Dome). These records suggests cooler climate conditions between the middle of 16th and the beginning of 19th centuries, which might be related to the Little Ice Age (LIA) cold period. Due to the high degree of geographical variability, the strongest LIA cooling was not temporally synchronous over East Antarctica and the analysed records do not provide a coherent picture for East Antarctica. The accumulation rate record presented for the TD core shows a decrease during part of the LIA followed by an increment of about 11% in accumulation during the 20th century. At the ST556 site, the accumulation rate observed during the 20th century was quite stable. |
author2 |
Stenni, Barbara Proposito, M. Gragnani, R. Flora, O. Jouzel, J. Falourd, S. Frezzotti M. |
format |
Article in Journal/Newspaper |
author |
STENNI, Barbara Proposito M. Gragnani R. Flora O. Jouzel J. Falourd S. Frezzotti M. |
author_facet |
STENNI, Barbara Proposito M. Gragnani R. Flora O. Jouzel J. Falourd S. Frezzotti M. |
author_sort |
STENNI, Barbara |
title |
Eight centuries of volcanic signal and climate change at Talos Dome (East Antarctica) |
title_short |
Eight centuries of volcanic signal and climate change at Talos Dome (East Antarctica) |
title_full |
Eight centuries of volcanic signal and climate change at Talos Dome (East Antarctica) |
title_fullStr |
Eight centuries of volcanic signal and climate change at Talos Dome (East Antarctica) |
title_full_unstemmed |
Eight centuries of volcanic signal and climate change at Talos Dome (East Antarctica) |
title_sort |
eight centuries of volcanic signal and climate change at talos dome (east antarctica) |
publishDate |
2002 |
url |
http://hdl.handle.net/10278/3536128 https://doi.org/10.1029/2000JD000317 |
long_lat |
ENVELOPE(158.000,158.000,-73.000,-73.000) ENVELOPE(157.667,157.667,-77.667,-77.667) |
geographic |
Antarctic East Antarctica South Pole Talos Dome Taylor Dome |
geographic_facet |
Antarctic East Antarctica South Pole Talos Dome Taylor Dome |
genre |
Antarc* Antarctic Antarctica East Antarctica EPICA ice core South pole South pole |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica EPICA ice core South pole South pole |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000178894800002 volume:107 issue:D9 journal:JOURNAL OF GEOPHYSICAL RESEARCH http://hdl.handle.net/10278/3536128 doi:10.1029/2000JD000317 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84933533660 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1029/2000JD000317 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
107 |
container_issue |
D9 |
container_start_page |
ACL 3-1 |
op_container_end_page |
ACL 3-13 |
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1796308430555709440 |