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In situ acoustic attenuation measurements in glacial ice

Westphal, James A. (1965) In situ acoustic attenuation measurements in glacial ice. Journal of Geophysical Research, 70 (8). pp. 1849-1853. ISSN 0148-0227. doi:10.1029/JZ070i008p01849.

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The attenuation coefficient of ice in a temperate valley glacier was measured by spectral analysis of the pressure pulse, directly transmitted through the ice from a small explosion. Values varied from 0.014±.002/m at 2.5 kc/s to 0.215±.002/m at 15 kc/s. The attenuation function follows a form α = A + Bƒ^4 closely, suggesting Rayleigh-type scattering as the dominant source of attenuation of high-frequency acoustic waves in glacial ice. Scattering from ice crystal boundaries is compatible with the observed scattering coefficient.

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Additional Information:Copyright 1965 by the American Geophysical Union. (Manuscript received November 28, 1964; revised January 20, 1965.) I would like to thank Drs. H. Dix, B. Murray, and D. Anderson for valuable discussions and Dr. C. Allen for help with part of the field work. This research was supported by NSF grant GP-745. Contribution 1293.
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Caltech Division of Geological Sciences1293
Issue or Number:8
Record Number:CaltechAUTHORS:20141110-103819651
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Official Citation:Westphal, J. A. (1965), In situ acoustic attenuation measurements in glacial ice, J. Geophys. Res., 70(8), 1849–1853, doi:10.1029/JZ070i008p01849.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51499
Deposited By: George Porter
Deposited On:10 Nov 2014 19:00
Last Modified:10 Nov 2021 19:11

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