Analysis of Lifetime of a Tubular Research Structure on Antarctica
Isolated at the centre of the Southern Hemisphere lies the world’s coldest, driest and windiest continent: Antarctica. Antarctica has no aboriginal population but since the beginning of the 18th century the continent attracted many adventurers and scientists who dedicate their studies to a wide rang...
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fttudelft:oai:tudelft.nl:uuid:de0d5a4a-7c46-4be2-b50d-2cbe806b0ade 2023-07-30T03:55:50+02:00 Analysis of Lifetime of a Tubular Research Structure on Antarctica Saltner, C. (author) Keij, W.D. (author) 2002-06-01 http://resolver.tudelft.nl/uuid:de0d5a4a-7c46-4be2-b50d-2cbe806b0ade en eng http://resolver.tudelft.nl/uuid:de0d5a4a-7c46-4be2-b50d-2cbe806b0ade (c) 2002 Saltner, C.; Keij, W.D. polar engineering tube deformation modelling snow master thesis Text 2002 fttudelft 2023-07-08T20:24:35Z Isolated at the centre of the Southern Hemisphere lies the world’s coldest, driest and windiest continent: Antarctica. Antarctica has no aboriginal population but since the beginning of the 18th century the continent attracted many adventurers and scientists who dedicate their studies to a wide range of research fields. The wish to conduct research and other activities on such a cold and remote place has to be responded with structures that withstand the extreme polar conditions. The German Alfred-Wegener-Institute (AWI), Foundation for Polar and Marine Research, has conducted research on Antarctica since 1981 and operates several bases on the Antarctic continent. The first German station, Georg von Neumayer (GvN), was a basis for four scientists conducting geophysical, meteorological and chemical research as well as for five personnel staff. The present study focuses on the Neumayer Station, built in 1992 after Georg von Neumayer had to be abandoned because of large deformations of the base’s outer hull. Like its predecessor, Neumayer Station is a subsurface research base erected on the Ekström Ice Shelf. Due to its location in an ice shelf the base suffers from a limited lifetime. Within the scope of this project a numerical model is developed to come to a more precise prediction of the lifetime of such a base. The snow-covered Neumayer Station is located in a 200 m thick ice shelf. The base consists of two parallel steel tubes, each of which is 8.40 m in diameter and around 90 m long, in which containers are inserted to accommodate living and working quarters. A numerical model has been developed to estimate the deformations of the tubes. The deformations observed result from the widening horizontal dimensions and shortening of the vertical dimensions as well as from the (unequal) settlements of the tubes. The output of the model shows that in an average (50%) accumulation case, the earliest moment of deformation larger than the acceptable maximum will be in the year 2009. Values have been given for larger ... Master Thesis Alfred Wegener Institute Antarc* Antarctic Antarctica Ice Shelf Delft University of Technology: Institutional Repository Antarctic Ekström Ice Shelf ENVELOPE(-8.000,-8.000,-71.000,-71.000) Neumayer Neumayer Station The Antarctic |
institution |
Open Polar |
collection |
Delft University of Technology: Institutional Repository |
op_collection_id |
fttudelft |
language |
English |
topic |
polar engineering tube deformation modelling snow |
spellingShingle |
polar engineering tube deformation modelling snow Saltner, C. (author) Keij, W.D. (author) Analysis of Lifetime of a Tubular Research Structure on Antarctica |
topic_facet |
polar engineering tube deformation modelling snow |
description |
Isolated at the centre of the Southern Hemisphere lies the world’s coldest, driest and windiest continent: Antarctica. Antarctica has no aboriginal population but since the beginning of the 18th century the continent attracted many adventurers and scientists who dedicate their studies to a wide range of research fields. The wish to conduct research and other activities on such a cold and remote place has to be responded with structures that withstand the extreme polar conditions. The German Alfred-Wegener-Institute (AWI), Foundation for Polar and Marine Research, has conducted research on Antarctica since 1981 and operates several bases on the Antarctic continent. The first German station, Georg von Neumayer (GvN), was a basis for four scientists conducting geophysical, meteorological and chemical research as well as for five personnel staff. The present study focuses on the Neumayer Station, built in 1992 after Georg von Neumayer had to be abandoned because of large deformations of the base’s outer hull. Like its predecessor, Neumayer Station is a subsurface research base erected on the Ekström Ice Shelf. Due to its location in an ice shelf the base suffers from a limited lifetime. Within the scope of this project a numerical model is developed to come to a more precise prediction of the lifetime of such a base. The snow-covered Neumayer Station is located in a 200 m thick ice shelf. The base consists of two parallel steel tubes, each of which is 8.40 m in diameter and around 90 m long, in which containers are inserted to accommodate living and working quarters. A numerical model has been developed to estimate the deformations of the tubes. The deformations observed result from the widening horizontal dimensions and shortening of the vertical dimensions as well as from the (unequal) settlements of the tubes. The output of the model shows that in an average (50%) accumulation case, the earliest moment of deformation larger than the acceptable maximum will be in the year 2009. Values have been given for larger ... |
format |
Master Thesis |
author |
Saltner, C. (author) Keij, W.D. (author) |
author_facet |
Saltner, C. (author) Keij, W.D. (author) |
author_sort |
Saltner, C. (author) |
title |
Analysis of Lifetime of a Tubular Research Structure on Antarctica |
title_short |
Analysis of Lifetime of a Tubular Research Structure on Antarctica |
title_full |
Analysis of Lifetime of a Tubular Research Structure on Antarctica |
title_fullStr |
Analysis of Lifetime of a Tubular Research Structure on Antarctica |
title_full_unstemmed |
Analysis of Lifetime of a Tubular Research Structure on Antarctica |
title_sort |
analysis of lifetime of a tubular research structure on antarctica |
publishDate |
2002 |
url |
http://resolver.tudelft.nl/uuid:de0d5a4a-7c46-4be2-b50d-2cbe806b0ade |
long_lat |
ENVELOPE(-8.000,-8.000,-71.000,-71.000) |
geographic |
Antarctic Ekström Ice Shelf Neumayer Neumayer Station The Antarctic |
geographic_facet |
Antarctic Ekström Ice Shelf Neumayer Neumayer Station The Antarctic |
genre |
Alfred Wegener Institute Antarc* Antarctic Antarctica Ice Shelf |
genre_facet |
Alfred Wegener Institute Antarc* Antarctic Antarctica Ice Shelf |
op_relation |
http://resolver.tudelft.nl/uuid:de0d5a4a-7c46-4be2-b50d-2cbe806b0ade |
op_rights |
(c) 2002 Saltner, C.; Keij, W.D. |
_version_ |
1772809902344896512 |