Design, Optimization and Calibration of an Automated Density Gauge for Firn and Ice Cores

A gamma-ray density gauge can provide high-resolution and high-precision density measurements of firn and ice cores. This study describes the design, gamma-ray energy optimization and mass attenuation coefficient calibration of the Maine Automated Density Gauge Experiment (MADGE), a portable, field-...

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Bibliographic Details
Main Authors: Breton, Daniel J., Hamilton, Gordon S., Hess, C. T.
Format: Text
Language:unknown
Published: DigitalCommons@UMaine 2009
Subjects:
Earth Sciences
East Antarctica
Antarc*
Antarctica
Online Access:https://digitalcommons.library.umaine.edu/ers_facpub/28
https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1027&context=ers_facpub
id ftmaineuniv:oai:digitalcommons.library.umaine.edu:ers_facpub-1027
record_format openpolar
spelling ftmaineuniv:oai:digitalcommons.library.umaine.edu:ers_facpub-1027 2023-05-15T13:44:14+02:00 Design, Optimization and Calibration of an Automated Density Gauge for Firn and Ice Cores Breton, Daniel J. Hamilton, Gordon S. Hess, C. T. 2009-01-01T08:00:00Z application/pdf https://digitalcommons.library.umaine.edu/ers_facpub/28 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1027&context=ers_facpub unknown DigitalCommons@UMaine https://digitalcommons.library.umaine.edu/ers_facpub/28 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1027&context=ers_facpub This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s). Earth Science Faculty Scholarship Earth Sciences text 2009 ftmaineuniv 2023-03-12T18:53:56Z A gamma-ray density gauge can provide high-resolution and high-precision density measurements of firn and ice cores. This study describes the design, gamma-ray energy optimization and mass attenuation coefficient calibration of the Maine Automated Density Gauge Experiment (MADGE), a portable, field-operable gamma-ray density gauge used on overland traverses in East Antarctica. The MADGE instrument uses a (241)Am gamma-ray source, a pulse-mode counting system and electronic core diameter calipers to collect high-precision (+/- 0.004 g cm(-3)) density data from 3-8 cm diameter firn and ice cores. The data are collected at a 3.3 mm spatial resolution and an average throughput of 1.5 m h(-1) for 5 cm diameter cores. Text Antarc* Antarctica East Antarctica The University of Maine: DigitalCommons@UMaine East Antarctica
institution Open Polar
collection The University of Maine: DigitalCommons@UMaine
op_collection_id ftmaineuniv
language unknown
topic Earth Sciences
spellingShingle Earth Sciences
Breton, Daniel J.
Hamilton, Gordon S.
Hess, C. T.
Design, Optimization and Calibration of an Automated Density Gauge for Firn and Ice Cores
topic_facet Earth Sciences
description A gamma-ray density gauge can provide high-resolution and high-precision density measurements of firn and ice cores. This study describes the design, gamma-ray energy optimization and mass attenuation coefficient calibration of the Maine Automated Density Gauge Experiment (MADGE), a portable, field-operable gamma-ray density gauge used on overland traverses in East Antarctica. The MADGE instrument uses a (241)Am gamma-ray source, a pulse-mode counting system and electronic core diameter calipers to collect high-precision (+/- 0.004 g cm(-3)) density data from 3-8 cm diameter firn and ice cores. The data are collected at a 3.3 mm spatial resolution and an average throughput of 1.5 m h(-1) for 5 cm diameter cores.
format Text
author Breton, Daniel J.
Hamilton, Gordon S.
Hess, C. T.
author_facet Breton, Daniel J.
Hamilton, Gordon S.
Hess, C. T.
author_sort Breton, Daniel J.
title Design, Optimization and Calibration of an Automated Density Gauge for Firn and Ice Cores
title_short Design, Optimization and Calibration of an Automated Density Gauge for Firn and Ice Cores
title_full Design, Optimization and Calibration of an Automated Density Gauge for Firn and Ice Cores
title_fullStr Design, Optimization and Calibration of an Automated Density Gauge for Firn and Ice Cores
title_full_unstemmed Design, Optimization and Calibration of an Automated Density Gauge for Firn and Ice Cores
title_sort design, optimization and calibration of an automated density gauge for firn and ice cores
publisher DigitalCommons@UMaine
publishDate 2009
url https://digitalcommons.library.umaine.edu/ers_facpub/28
https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1027&context=ers_facpub
geographic East Antarctica
geographic_facet East Antarctica
genre Antarc*
Antarctica
East Antarctica
genre_facet Antarc*
Antarctica
East Antarctica
op_source Earth Science Faculty Scholarship
op_relation https://digitalcommons.library.umaine.edu/ers_facpub/28
https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1027&context=ers_facpub
op_rights This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s).
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