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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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 |
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The University of Maine: DigitalCommons@UMaine |
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ftmaineuniv |
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Earth Sciences |
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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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