Depth-age and temperature prediction at Dome Fuji station, East Antarctica
The geophysical metronome (Milankovitch components of the past surface temperature variations) and the isotope-temperature transfer function deduced from the borehole temperature profile at Vostok station, Antarctica, are applied to date the 2500 m deep ice core from Dome Fuji station, Antarctica, a...
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ftneicon:oai:rour.neicon.ru:rour/130773 2023-05-15T13:29:11+02:00 Depth-age and temperature prediction at Dome Fuji station, East Antarctica Hondoh T. Shoji H. Watanabe O. Salamatin A. Lipenkov V. 2002 https://openrepository.ru/article?id=130773 unknown Annals of Glaciology 384 35 0260-3055 https://openrepository.ru/article?id=130773 SCOPUS02603055-2002-35-SID0036968588 Article 2002 ftneicon 2020-07-21T11:47:33Z The geophysical metronome (Milankovitch components of the past surface temperature variations) and the isotope-temperature transfer function deduced from the borehole temperature profile at Vostok station, Antarctica, are applied to date the 2500 m deep ice core from Dome Fuji station, Antarctica, and to reconstruct paleoclimatic conditions at the drilling site on the basis of the local δ18O isotope record. Special attention is paid to consistency of this depth-age relation with the mass-balance reconstruction and predictions of ice-flow modeling. The present-day ice mass-balance rate at Dome Fuji is estimated as 3.2 cm a-1. The ice age at the borehole bottom (590 m above the bedrock) is around 335 ± 4.5 kyr and may reach 2000 kyr at about 3000 m depth. The difference in the ice-sheet surface temperatures between Holocene optimum and Last Glacial Maximum is found to be 17.8°C at the temporal isotope/temperature slope, about 30% lower than the modern geographical estimates. A good agreement between modeled and measured (preliminary data) borehole temperatures is obtained at the geothermal flux 0.059 W m-2 and ice-fusion temperature (-2°C) at the ice-rock interface with minimum (zero) melt rates. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctica East Antarctica ice core Ice Sheet NORA (National aggregator of open repositories of Russian universities) Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) Dome Fuji Station ENVELOPE(39.703,39.703,-77.317,-77.317) East Antarctica Vostok Station ENVELOPE(106.837,106.837,-78.464,-78.464) |
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Open Polar |
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NORA (National aggregator of open repositories of Russian universities) |
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ftneicon |
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unknown |
description |
The geophysical metronome (Milankovitch components of the past surface temperature variations) and the isotope-temperature transfer function deduced from the borehole temperature profile at Vostok station, Antarctica, are applied to date the 2500 m deep ice core from Dome Fuji station, Antarctica, and to reconstruct paleoclimatic conditions at the drilling site on the basis of the local δ18O isotope record. Special attention is paid to consistency of this depth-age relation with the mass-balance reconstruction and predictions of ice-flow modeling. The present-day ice mass-balance rate at Dome Fuji is estimated as 3.2 cm a-1. The ice age at the borehole bottom (590 m above the bedrock) is around 335 ± 4.5 kyr and may reach 2000 kyr at about 3000 m depth. The difference in the ice-sheet surface temperatures between Holocene optimum and Last Glacial Maximum is found to be 17.8°C at the temporal isotope/temperature slope, about 30% lower than the modern geographical estimates. A good agreement between modeled and measured (preliminary data) borehole temperatures is obtained at the geothermal flux 0.059 W m-2 and ice-fusion temperature (-2°C) at the ice-rock interface with minimum (zero) melt rates. |
format |
Article in Journal/Newspaper |
author |
Hondoh T. Shoji H. Watanabe O. Salamatin A. Lipenkov V. |
spellingShingle |
Hondoh T. Shoji H. Watanabe O. Salamatin A. Lipenkov V. Depth-age and temperature prediction at Dome Fuji station, East Antarctica |
author_facet |
Hondoh T. Shoji H. Watanabe O. Salamatin A. Lipenkov V. |
author_sort |
Hondoh T. |
title |
Depth-age and temperature prediction at Dome Fuji station, East Antarctica |
title_short |
Depth-age and temperature prediction at Dome Fuji station, East Antarctica |
title_full |
Depth-age and temperature prediction at Dome Fuji station, East Antarctica |
title_fullStr |
Depth-age and temperature prediction at Dome Fuji station, East Antarctica |
title_full_unstemmed |
Depth-age and temperature prediction at Dome Fuji station, East Antarctica |
title_sort |
depth-age and temperature prediction at dome fuji station, east antarctica |
publishDate |
2002 |
url |
https://openrepository.ru/article?id=130773 |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) ENVELOPE(39.703,39.703,-77.317,-77.317) ENVELOPE(106.837,106.837,-78.464,-78.464) |
geographic |
Dome Fuji Dome Fuji Station East Antarctica Vostok Station |
geographic_facet |
Dome Fuji Dome Fuji Station East Antarctica Vostok Station |
genre |
Annals of Glaciology Antarc* Antarctica East Antarctica ice core Ice Sheet |
genre_facet |
Annals of Glaciology Antarc* Antarctica East Antarctica ice core Ice Sheet |
op_source |
SCOPUS02603055-2002-35-SID0036968588 |
op_relation |
Annals of Glaciology 384 35 0260-3055 https://openrepository.ru/article?id=130773 |
_version_ |
1765999140512202752 |