Climate variability along latitudinal and longitudinal transects in East Antarctica
In the framework of the International Trans-Antarctic Scientific Expedition (ITASE) programme, France and Italy carried out a traverse along one west-east and two north-south transects in East Antarctica from November 2001 to January 2002. Eighteen shallow snow-firn cores were drilled, and surface s...
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ftunivroma3iris:oai:iris.uniroma3.it:11590/353616 2024-02-27T08:33:35+00:00 Climate variability along latitudinal and longitudinal transects in East Antarctica Magand O. Frezzotti M. Pourchet M. Stenni B. Genoni L. Fily M. Magand, O. Frezzotti, M. Pourchet, M. Stenni, B. Genoni, L. Fily, M. 2004 http://hdl.handle.net/11590/353616 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000232368400053 volume:39 firstpage:351 lastpage:358 numberofpages:8 journal:ANNALS OF GLACIOLOGY http://hdl.handle.net/11590/353616 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-23844524105 info:eu-repo/semantics/article 2004 ftunivroma3iris 2024-01-31T17:41:11Z In the framework of the International Trans-Antarctic Scientific Expedition (ITASE) programme, France and Italy carried out a traverse along one west-east and two north-south transects in East Antarctica from November 2001 to January 2002. Eighteen shallow snow-firn cores were drilled, and surface snow samples were collected every 5 km along the traverse. Firn temperatures were measured in boreholes down to 30 m. The cores were analyzed for β radioactivity to obtain snow accumulation-rate data. The surface snow samples were analyzed for δ 18O to correlate isotopic values with borehole temperatures. Multiple regression analysis shows a global near-dry-adiabatic lapse rate and a latitudinal lapse rate of 1.05°C (° lat. S) -1, in the Dome C drainage area. Analysis of firn temperatures reveals a super-adiabatic lapse rate along the ice divide between Talos Dome and the Southern Ocean coast, and in some sectors along the ice divide between the Astrolabe Basin and D59. Snow accumulation rates and firn temperatures show warmer temperatures and higher accumulation values close to the ice divides extending from Talos Dome and Dome C to the Southern Ocean. The spatial pattern of data is linked with a katabatic-wind-source basin and moisture-source region. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Southern Ocean Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) Antarctic Southern Ocean East Antarctica Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) Astrolabe ENVELOPE(140.000,140.000,-66.733,-66.733) |
institution |
Open Polar |
collection |
Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) |
op_collection_id |
ftunivroma3iris |
language |
English |
description |
In the framework of the International Trans-Antarctic Scientific Expedition (ITASE) programme, France and Italy carried out a traverse along one west-east and two north-south transects in East Antarctica from November 2001 to January 2002. Eighteen shallow snow-firn cores were drilled, and surface snow samples were collected every 5 km along the traverse. Firn temperatures were measured in boreholes down to 30 m. The cores were analyzed for β radioactivity to obtain snow accumulation-rate data. The surface snow samples were analyzed for δ 18O to correlate isotopic values with borehole temperatures. Multiple regression analysis shows a global near-dry-adiabatic lapse rate and a latitudinal lapse rate of 1.05°C (° lat. S) -1, in the Dome C drainage area. Analysis of firn temperatures reveals a super-adiabatic lapse rate along the ice divide between Talos Dome and the Southern Ocean coast, and in some sectors along the ice divide between the Astrolabe Basin and D59. Snow accumulation rates and firn temperatures show warmer temperatures and higher accumulation values close to the ice divides extending from Talos Dome and Dome C to the Southern Ocean. The spatial pattern of data is linked with a katabatic-wind-source basin and moisture-source region. |
author2 |
Magand, O. Frezzotti, M. Pourchet, M. Stenni, B. Genoni, L. Fily, M. |
format |
Article in Journal/Newspaper |
author |
Magand O. Frezzotti M. Pourchet M. Stenni B. Genoni L. Fily M. |
spellingShingle |
Magand O. Frezzotti M. Pourchet M. Stenni B. Genoni L. Fily M. Climate variability along latitudinal and longitudinal transects in East Antarctica |
author_facet |
Magand O. Frezzotti M. Pourchet M. Stenni B. Genoni L. Fily M. |
author_sort |
Magand O. |
title |
Climate variability along latitudinal and longitudinal transects in East Antarctica |
title_short |
Climate variability along latitudinal and longitudinal transects in East Antarctica |
title_full |
Climate variability along latitudinal and longitudinal transects in East Antarctica |
title_fullStr |
Climate variability along latitudinal and longitudinal transects in East Antarctica |
title_full_unstemmed |
Climate variability along latitudinal and longitudinal transects in East Antarctica |
title_sort |
climate variability along latitudinal and longitudinal transects in east antarctica |
publishDate |
2004 |
url |
http://hdl.handle.net/11590/353616 |
long_lat |
ENVELOPE(158.000,158.000,-73.000,-73.000) ENVELOPE(140.000,140.000,-66.733,-66.733) |
geographic |
Antarctic Southern Ocean East Antarctica Talos Dome Astrolabe |
geographic_facet |
Antarctic Southern Ocean East Antarctica Talos Dome Astrolabe |
genre |
Antarc* Antarctic Antarctica East Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Southern Ocean |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000232368400053 volume:39 firstpage:351 lastpage:358 numberofpages:8 journal:ANNALS OF GLACIOLOGY http://hdl.handle.net/11590/353616 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-23844524105 |
_version_ |
1792046428263022592 |