As is well known, sound propagation over long distances is greatly influenced by the land surface and weather conditions.
Sound velocity varies with weather conditions, primarily air temperature and wind velocity.
Schomer et al. presented a rather coarse statistical analysis of C-weighted sound exposure levels from blast sounds propagated over distances along the ground ranging from 3.2 to 24 km in a 1978 article in J. Acoust. The present article contains an improved statistical presentation of the 1978 data. All rights reserved. But use of the information for resale or commercial purposes is not permitted. Return to the NCEJ cumulative index .