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...
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Online Access: | http://hdl.handle.net/11368/2626739 https://doi.org/10.1029/2000JD000317 |
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ftunitriestiris:oai:arts.units.it:11368/2626739 2023-05-15T13:53:04+02:00 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/11368/2626739 https://doi.org/10.1029/2000JD000317 eng eng volume:107 issue:D9 firstpage:"-" lastpage:"-" journal:JOURNAL OF GEOPHYSICAL RESEARCH http://hdl.handle.net/11368/2626739 doi:10.1029/2000JD000317 Ice core Antarctica hydrogen isotope sulphate content volcanic eruption paleoclimate snow accumulation rate info:eu-repo/semantics/article 2002 ftunitriestiris https://doi.org/10.1029/2000JD000317 2023-04-09T06:11:12Z 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 degli studi di Trieste: ArTS (Archivio della ricerca di Trieste) 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 degli studi di Trieste: ArTS (Archivio della ricerca di Trieste) |
op_collection_id |
ftunitriestiris |
language |
English |
topic |
Ice core Antarctica hydrogen isotope sulphate content volcanic eruption paleoclimate snow accumulation rate |
spellingShingle |
Ice core Antarctica hydrogen isotope sulphate content volcanic eruption paleoclimate snow accumulation rate 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 |
Ice core Antarctica hydrogen isotope sulphate content volcanic eruption paleoclimate snow accumulation rate |
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/11368/2626739 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 |
volume:107 issue:D9 firstpage:"-" lastpage:"-" journal:JOURNAL OF GEOPHYSICAL RESEARCH http://hdl.handle.net/11368/2626739 doi:10.1029/2000JD000317 |
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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1766258028420530176 |