Journal of Glaciology
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.
Breton, Daniel J.; Hamilton, Gordon S.; and Hess, C. T., "Design, Optimization and Calibration of an Automated Density Gauge for Firn and Ice Cores" (2009). Earth Science Faculty Scholarship. 28.
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
© Copyright 2009 by the International Glaciological Society
publisher's version of the published document