The Dielectric Properties of Antarctic Ice
Abstract Two 0.5 m cores from "Byrd" station, Antarctica have been studied in the laboratory, one from a shallow depth (155 m) and the other from the zone where recrystallization has given a vertical c -axis fabric, and the air in situ is thought to be in clathrate form (1 424 m). The diel...
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crcambridgeupr:10.1017/s0022143000034250 2024-03-03T08:38:27+00:00 The Dielectric Properties of Antarctic Ice Fitzgerald, W. J. Paren, J. G. 1975 http://dx.doi.org/10.1017/s0022143000034250 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000034250 en eng Cambridge University Press (CUP) Journal of Glaciology volume 15, issue 73, page 39-48 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1975 crcambridgeupr https://doi.org/10.1017/s0022143000034250 2024-02-08T08:39:08Z Abstract Two 0.5 m cores from "Byrd" station, Antarctica have been studied in the laboratory, one from a shallow depth (155 m) and the other from the zone where recrystallization has given a vertical c -axis fabric, and the air in situ is thought to be in clathrate form (1 424 m). The dielectric response has been studied in the frequency range 60 Hz to 10 kHz, and in the temperature range — 6° C to —6o° C. The behaviour observed is markedly different from that of "pure" polycrystalline ice such as may be made by slowly freezing distilled de-ionized water and is thus at variance with the conclusions of Rogers (unpublished) who deduced, from measurements of the admittance of a dipole probe lowered through the fluid-filled drill hole at "Byrd", that the ice surrounding the hole had a dielectric response similar to that of "pure" ice. The Antarctic ice is shown to have properties similar to those of the ice from "Camp Century" and "Site 2" in Greenland studied by Paren (1973). In an attempt to discover what factors determine the difference in electrical behaviour between polar ice and pure ice, some samples were melted and subsequently refrozen slowly. Their dielectric response was similar to that of pure polycrystalline ice. These results are discussed in connection with the impurity content and growth conditions of the ices. Article in Journal/Newspaper Antarc* Antarctic Antarctica Greenland Journal of Glaciology Cambridge University Press Antarctic The Antarctic Greenland Byrd Byrd Station ENVELOPE(-119.533,-119.533,-80.017,-80.017) Paren’ ENVELOPE(163.156,163.156,62.416,62.416) Journal of Glaciology 15 73 39 48 |
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Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Fitzgerald, W. J. Paren, J. G. The Dielectric Properties of Antarctic Ice |
topic_facet |
Earth-Surface Processes |
description |
Abstract Two 0.5 m cores from "Byrd" station, Antarctica have been studied in the laboratory, one from a shallow depth (155 m) and the other from the zone where recrystallization has given a vertical c -axis fabric, and the air in situ is thought to be in clathrate form (1 424 m). The dielectric response has been studied in the frequency range 60 Hz to 10 kHz, and in the temperature range — 6° C to —6o° C. The behaviour observed is markedly different from that of "pure" polycrystalline ice such as may be made by slowly freezing distilled de-ionized water and is thus at variance with the conclusions of Rogers (unpublished) who deduced, from measurements of the admittance of a dipole probe lowered through the fluid-filled drill hole at "Byrd", that the ice surrounding the hole had a dielectric response similar to that of "pure" ice. The Antarctic ice is shown to have properties similar to those of the ice from "Camp Century" and "Site 2" in Greenland studied by Paren (1973). In an attempt to discover what factors determine the difference in electrical behaviour between polar ice and pure ice, some samples were melted and subsequently refrozen slowly. Their dielectric response was similar to that of pure polycrystalline ice. These results are discussed in connection with the impurity content and growth conditions of the ices. |
format |
Article in Journal/Newspaper |
author |
Fitzgerald, W. J. Paren, J. G. |
author_facet |
Fitzgerald, W. J. Paren, J. G. |
author_sort |
Fitzgerald, W. J. |
title |
The Dielectric Properties of Antarctic Ice |
title_short |
The Dielectric Properties of Antarctic Ice |
title_full |
The Dielectric Properties of Antarctic Ice |
title_fullStr |
The Dielectric Properties of Antarctic Ice |
title_full_unstemmed |
The Dielectric Properties of Antarctic Ice |
title_sort |
dielectric properties of antarctic ice |
publisher |
Cambridge University Press (CUP) |
publishDate |
1975 |
url |
http://dx.doi.org/10.1017/s0022143000034250 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000034250 |
long_lat |
ENVELOPE(-119.533,-119.533,-80.017,-80.017) ENVELOPE(163.156,163.156,62.416,62.416) |
geographic |
Antarctic The Antarctic Greenland Byrd Byrd Station Paren’ |
geographic_facet |
Antarctic The Antarctic Greenland Byrd Byrd Station Paren’ |
genre |
Antarc* Antarctic Antarctica Greenland Journal of Glaciology |
genre_facet |
Antarc* Antarctic Antarctica Greenland Journal of Glaciology |
op_source |
Journal of Glaciology volume 15, issue 73, page 39-48 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000034250 |
container_title |
Journal of Glaciology |
container_volume |
15 |
container_issue |
73 |
container_start_page |
39 |
op_container_end_page |
48 |
_version_ |
1792506839775051776 |