Entropic "sound" in the atmosphere

1996/06/09 by B. -F. Apostol, B.-F. Apostol, Apostol, B. -F. +5
Earth and Planetary Sciences · Engineering · Environmental Science · Physics and Astronomy · #Acoustic Wave Phenomena Research #Atmospheric and Oceanic Physics (physics.ao-ph) #FOS: Physical sciences #Underwater Acoustics Research #Wind and Air Flow Studies #ao-sci #physics.ao-ph

paper · pdf · doi:10.48550/arxiv.ao-sci/9606001

5 pages, latex, no figures; distinction made more clear between entropic "sound" velocity and wind velocity

openalex publication_date 1996/06/09 · arxiv created 1996/06/30 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

It is shown that small, local disturbances of entropy in the atmosphere may give rise to "sound" waves propagating with a velocity which depends on the amplitude ratio of the local relative variations of temperature and volume. This velocity is much smaller than the mean molecular velocity and the usual, adiabatic sound velocity.

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