High-resolution dielectric profiling of ice cores

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 anal...

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Bibliographic Details
Published in:Journal of Glaciology
Main Author: Moore, J.C.
Format: Article in Journal/Newspaper
Language:unknown
Published: International Glaciological Society 1993
Subjects:
Electronics
Engineering and Technology
Greenland
GRIP
Journal of Glaciology
Online Access:http://nora.nerc.ac.uk/id/eprint/517911/
https://doi.org/10.3189/S0022143000015902
id ftnerc:oai:nora.nerc.ac.uk:517911
record_format openpolar
spelling ftnerc:oai:nora.nerc.ac.uk:517911 2023-05-15T16:28:37+02:00 High-resolution dielectric profiling of ice cores Moore, J.C. 1993 http://nora.nerc.ac.uk/id/eprint/517911/ https://doi.org/10.3189/S0022143000015902 unknown International Glaciological Society Moore, J.C. 1993 High-resolution dielectric profiling of ice cores. Journal of Glaciology, 39 (132). 245-248. https://doi.org/10.3189/S0022143000015902 <https://doi.org/10.3189/S0022143000015902> Electronics Engineering and Technology Publication - Article PeerReviewed 1993 ftnerc https://doi.org/10.3189/S0022143000015902 2023-02-04T19:45:24Z 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 Natural Environment Research Council: NERC Open Research Archive Greenland Journal of Glaciology 39 132 245 248
institution Open Polar
collection Natural Environment Research Council: NERC Open Research Archive
op_collection_id ftnerc
language unknown
topic Electronics
Engineering and Technology
spellingShingle Electronics
Engineering and Technology
Moore, J.C.
High-resolution dielectric profiling of ice cores
topic_facet Electronics
Engineering and Technology
description 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 International Glaciological Society
publishDate 1993
url http://nora.nerc.ac.uk/id/eprint/517911/
https://doi.org/10.3189/S0022143000015902
geographic Greenland
geographic_facet Greenland
genre Greenland
GRIP
Journal of Glaciology
genre_facet Greenland
GRIP
Journal of Glaciology
op_relation Moore, J.C. 1993 High-resolution dielectric profiling of ice cores. Journal of Glaciology, 39 (132). 245-248. https://doi.org/10.3189/S0022143000015902 <https://doi.org/10.3189/S0022143000015902>
op_doi https://doi.org/10.3189/S0022143000015902
container_title Journal of Glaciology
container_volume 39
container_issue 132
container_start_page 245
op_container_end_page 248
_version_ 1766018285186318336

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