High-resolution dielectric profiling of ice cores

Abstract A new method for high-resolution (3 mm) dielectric profiling of ice cores is described. The method measures the capacitance and conductance of the ice at a single frequency (chosen to be 50 kHz in this case). The technique requires only a few minutes per metre of core, and no sophisticated...

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Bibliographic Details
Published in:Journal of Glaciology
Main Author: Moore, J. C.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1993
Subjects:
Earth-Surface Processes
Greenland
GRIP
Journal of Glaciology
Online Access:http://dx.doi.org/10.1017/s0022143000015902
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000015902
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spelling crcambridgeupr:10.1017/s0022143000015902 2024-03-03T08:45:00+00:00 High-resolution dielectric profiling of ice cores Moore, J. C. 1993 http://dx.doi.org/10.1017/s0022143000015902 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000015902 en eng Cambridge University Press (CUP) Journal of Glaciology volume 39, issue 132, page 245-248 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1993 crcambridgeupr https://doi.org/10.1017/s0022143000015902 2024-02-08T08:36:15Z Abstract A new method for high-resolution (3 mm) dielectric profiling of ice cores is described. The method measures the capacitance and conductance of the ice at a single frequency (chosen to be 50 kHz in this case). The technique requires only a few minutes per metre of core, and no sophisticated data analysis. The system is designed to operate on ice cores that have been cut longitudinally, providing one flat and one curved surface. The 50 kHz conductance is dependent on the acid and neutral-salt concentrations in the ice. The new method was tested successfully on the GRIP core from Summit, Greenland, in 1991. It is useful for detecting seasonal variations in impurities in both acidic Holocene ice and in normally alkaline Wisconsin ice. Article in Journal/Newspaper Greenland GRIP Journal of Glaciology Cambridge University Press Greenland Journal of Glaciology 39 132 245 248
institution Open Polar
collection Cambridge University Press
op_collection_id crcambridgeupr
language English
topic Earth-Surface Processes
spellingShingle Earth-Surface Processes
Moore, J. C.
High-resolution dielectric profiling of ice cores
topic_facet Earth-Surface Processes
description Abstract A new method for high-resolution (3 mm) dielectric profiling of ice cores is described. The method measures the capacitance and conductance of the ice at a single frequency (chosen to be 50 kHz in this case). The technique requires only a few minutes per metre of core, and no sophisticated data analysis. The system is designed to operate on ice cores that have been cut longitudinally, providing one flat and one curved surface. The 50 kHz conductance is dependent on the acid and neutral-salt concentrations in the ice. The new method was tested successfully on the GRIP core from Summit, Greenland, in 1991. It is useful for detecting seasonal variations in impurities in both acidic Holocene ice and in normally alkaline Wisconsin ice.
format Article in Journal/Newspaper
author Moore, J. C.
author_facet Moore, J. C.
author_sort Moore, J. C.
title High-resolution dielectric profiling of ice cores
title_short High-resolution dielectric profiling of ice cores
title_full High-resolution dielectric profiling of ice cores
title_fullStr High-resolution dielectric profiling of ice cores
title_full_unstemmed High-resolution dielectric profiling of ice cores
title_sort high-resolution dielectric profiling of ice cores
publisher Cambridge University Press (CUP)
publishDate 1993
url http://dx.doi.org/10.1017/s0022143000015902
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000015902
geographic Greenland
geographic_facet Greenland
genre Greenland
GRIP
Journal of Glaciology
genre_facet Greenland
GRIP
Journal of Glaciology
op_source Journal of Glaciology
volume 39, issue 132, page 245-248
ISSN 0022-1430 1727-5652
op_doi https://doi.org/10.1017/s0022143000015902
container_title Journal of Glaciology
container_volume 39
container_issue 132
container_start_page 245
op_container_end_page 248
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