Document Type

Article

Publication Title

Journal of Glaciology

Rights and Access Note

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).

Publication Date

2009

First Page

1092

Last Page

1100

Issue Number

194

Volume Number

55

Abstract/ Summary

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.

Citation/Publisher Attribution

Breton, DJ, Hamilton, GS, and Hess, CT, 2009, Design, Optimization and Calibration of an Automated Density Gauge for Firn and Ice Cores: Journal of Glaciology, v. 55, p. 1092-1100. Available on publisher's site at: http://www.ingentaconnect.com/content/igsoc/jog/2009/00000055/00000194/art00014

Publisher Statement

© Copyright 2009 by the International Glaciological Society

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In Copyright - Educational Use Permitted.