Propagation of near-infrasound over long ranges
Abstract
This paper describes the results of basic research on the physics of infrasonic propagation, both for predictive purposes and signal interpretation. The following aspects were considered: (1) attenuation, (2) seasonal effects, (3) wave effects, (4) average velocity, (5) azimuth deviations, (6) coherence, and (7) surface effects. The primary region of interest was approximately 0.1 to Hz with corresponding wavelengths of 3000 to 30 meters.
- Publication:
-
Presented at the Atmospheric and Meteorological Effects on Low-frequency
- Pub Date:
- 1986
- Bibcode:
- 1986amel.rept.....M
- Keywords:
-
- Infrasonic Frequencies;
- Nuclear Explosions;
- Signal Detection;
- Signal Fading;
- Surface Properties;
- Wave Propagation;
- Annual Variations;
- Earth Surface;
- Sound Waves;
- Velocity;
- Acoustics