Characterization of Acoustic Ground Impedance at Blossom Point Research Facility

Report No. ARL-TR-5352
Authors: W. C. Kirkpatrick Alberts, II, Mark A. Coleman, and John M. Noble
Date/Pages: September 2010; 24 pages
Abstract: The propagation of sound in the atmosphere is greatly influenced by the acoustic impedance of the ground surface. As part of a recent urban acoustics study (Alberts, et al. J. Acoust. Soc. Am. 2008, 124 (2)), and as part of the revision of American National Standards Institute (ANSI) standard S1:18-1999: Template Method for Ground Impedance, the ground impedance was measured at three sites at the U.S. Army Research Laboratory's (ARL) Blossom Point Research Facility: a grass field, an asphalt road, and a gravel road. This report describes the measurements and results at each of the three sites.
Distribution: Approved for public release
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Last Update / Reviewed: September 1, 2010