Assessment of thermobaric state and change of the mass balance in the subgkacial Lake Vostok after drilling-in
Estimation of temperature and pressure conditions in the subglacial reservoirs is one of the most important tasks of modern subglacial research, since it provides an adequate tool for predicting the process of their accessing. This paper presents the estimation of pressure in the subglacial reservoi...
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ftdoajarticles:oai:doaj.org/article:2f9cb916fd2b4445b7fbf64bb376f6e4 2023-05-15T16:41:12+02:00 Assessment of thermobaric state and change of the mass balance in the subgkacial Lake Vostok after drilling-in A. N. Markov P. G. Talalay 2015-03-01T00:00:00Z https://doi.org/10.15356/2076-6734-2014-1-20-26 https://doaj.org/article/2f9cb916fd2b4445b7fbf64bb376f6e4 RU rus Nauka https://ice-snow.igras.ru/jour/article/view/20 https://doaj.org/toc/2076-6734 https://doaj.org/toc/2412-3765 2076-6734 2412-3765 doi:10.15356/2076-6734-2014-1-20-26 https://doaj.org/article/2f9cb916fd2b4445b7fbf64bb376f6e4 Лëд и снег, Vol 54, Iss 1, Pp 20-26 (2015) антарктида баланс массы льда бурение во льду подледниковые озера Science Q article 2015 ftdoajarticles https://doi.org/10.15356/2076-6734-2014-1-20-26 2023-03-19T01:40:13Z Estimation of temperature and pressure conditions in the subglacial reservoirs is one of the most important tasks of modern subglacial research, since it provides an adequate tool for predicting the process of their accessing. This paper presents the estimation of pressure in the subglacial reservoirs for different baric system statuses. Opening of isolated subglacial reservoirs is attended by disturbance of their thermobaric equilibrium, thus the conditions of phase transition are changed on the entire surface of the ice-water contact. At the same time reducing the pressure in the subglacial reservoirs leads to «lowering» of the phase transition of ice-water boundary and to the growth of additional layer of congelation ice on the entire bottom surface of the ice sheet contact with water. Realized accessing of Lake Vostok and technology re-entry involves water rise into the borehole from the lake as one of the steps to prevent pollution of relict water system. With the use of this technology the reliability of estimate the pressure in Lake Vostok is extremely important and, consequently, the value of the differential pressure when the borehole accesses with lake. The paper presents analysis of the possible consequences of incorrect estimation of the pressure in isolated water system of Lake Vostok, when the borehole accesses in conditions of incomplete compensation of subglacial water pressure by hydrostatic pressure of the drilling fluid column. Article in Journal/Newspaper Ice Sheet Антарктида Directory of Open Access Journals: DOAJ Articles Lake Vostok ENVELOPE(106.000,106.000,-77.500,-77.500) Ice and Snow 125 1 20 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Russian |
topic |
антарктида баланс массы льда бурение во льду подледниковые озера Science Q |
spellingShingle |
антарктида баланс массы льда бурение во льду подледниковые озера Science Q A. N. Markov P. G. Talalay Assessment of thermobaric state and change of the mass balance in the subgkacial Lake Vostok after drilling-in |
topic_facet |
антарктида баланс массы льда бурение во льду подледниковые озера Science Q |
description |
Estimation of temperature and pressure conditions in the subglacial reservoirs is one of the most important tasks of modern subglacial research, since it provides an adequate tool for predicting the process of their accessing. This paper presents the estimation of pressure in the subglacial reservoirs for different baric system statuses. Opening of isolated subglacial reservoirs is attended by disturbance of their thermobaric equilibrium, thus the conditions of phase transition are changed on the entire surface of the ice-water contact. At the same time reducing the pressure in the subglacial reservoirs leads to «lowering» of the phase transition of ice-water boundary and to the growth of additional layer of congelation ice on the entire bottom surface of the ice sheet contact with water. Realized accessing of Lake Vostok and technology re-entry involves water rise into the borehole from the lake as one of the steps to prevent pollution of relict water system. With the use of this technology the reliability of estimate the pressure in Lake Vostok is extremely important and, consequently, the value of the differential pressure when the borehole accesses with lake. The paper presents analysis of the possible consequences of incorrect estimation of the pressure in isolated water system of Lake Vostok, when the borehole accesses in conditions of incomplete compensation of subglacial water pressure by hydrostatic pressure of the drilling fluid column. |
format |
Article in Journal/Newspaper |
author |
A. N. Markov P. G. Talalay |
author_facet |
A. N. Markov P. G. Talalay |
author_sort |
A. N. Markov |
title |
Assessment of thermobaric state and change of the mass balance in the subgkacial Lake Vostok after drilling-in |
title_short |
Assessment of thermobaric state and change of the mass balance in the subgkacial Lake Vostok after drilling-in |
title_full |
Assessment of thermobaric state and change of the mass balance in the subgkacial Lake Vostok after drilling-in |
title_fullStr |
Assessment of thermobaric state and change of the mass balance in the subgkacial Lake Vostok after drilling-in |
title_full_unstemmed |
Assessment of thermobaric state and change of the mass balance in the subgkacial Lake Vostok after drilling-in |
title_sort |
assessment of thermobaric state and change of the mass balance in the subgkacial lake vostok after drilling-in |
publisher |
Nauka |
publishDate |
2015 |
url |
https://doi.org/10.15356/2076-6734-2014-1-20-26 https://doaj.org/article/2f9cb916fd2b4445b7fbf64bb376f6e4 |
long_lat |
ENVELOPE(106.000,106.000,-77.500,-77.500) |
geographic |
Lake Vostok |
geographic_facet |
Lake Vostok |
genre |
Ice Sheet Антарктида |
genre_facet |
Ice Sheet Антарктида |
op_source |
Лëд и снег, Vol 54, Iss 1, Pp 20-26 (2015) |
op_relation |
https://ice-snow.igras.ru/jour/article/view/20 https://doaj.org/toc/2076-6734 https://doaj.org/toc/2412-3765 2076-6734 2412-3765 doi:10.15356/2076-6734-2014-1-20-26 https://doaj.org/article/2f9cb916fd2b4445b7fbf64bb376f6e4 |
op_doi |
https://doi.org/10.15356/2076-6734-2014-1-20-26 |
container_title |
Ice and Snow |
container_volume |
125 |
container_issue |
1 |
container_start_page |
20 |
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1766031637078867968 |