On the Effect of Weak Attenuation of Acoustic Waves from High-Altitude Explosions

Autor:	N. D. Tsybulskaya, Otto Chkhetiani, S. I. Kosyakov, Sergey Kulichkov
Rok vydání:	2019
Předmět:	010302 applied physics Absorption (acoustics) Acoustics and Ultrasonics Wave packet Attenuation Acoustics Acoustic wave Effects of high altitude on humans 01 natural sciences Atmosphere 0103 physical sciences 010301 acoustics Energy (signal processing) Blast wave Geology
Zdroj:	Acoustical Physics. 65:731-741
ISSN:	1562-6865 1063-7710
Popis:	The article analyzes difficult to explain experimental data on acoustic signals recorded from explosions and injections of matter at heights of 120–150 km. It is noted that a significant part of the acoustic energy of high-altitude explosions reaches the Earth’s surface without significant absorption. Based on an analysis of a nonlocal three-flux gas-dynamic model, transformation of a strong blast wave in air into a continuous disturbance, a hypothesis is proffered about the sequential decay of a wave from a high-altitude explosion into wave packets (wave trains). A significant fraction of the blast energy should be transferred by such wave packets during their motion from top to bottom throughout the atmosphere, which should be virtually “transparent” to such acoustic disturbances.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f4ae2adbb895f6e506a051c7806124f6 https://doi.org/10.1134/s106377101906006x Zobrazit plný text záznamu Plný text ve formátu PDF