Abstract
InfraMatics is an international peer-reviewed journal dedicated to presenting observational and theoretical stud- ies of atmospheric infrasound generation, propagation, and reception that address outstanding problems in basic and applied research.
Highlights
Infrasound is generated by a large number of man-made sources including nuclear and chemical explosions, rockets and supersonic aircraft. These long-period sound waves were of great interest in the 1950’s and 1960’s during the era of atmospheric nuclear testing
The global network is enhanced in some regions by other infrasound arrays and, notably, in the United States by the Transportable Array [1] that comprises 400 combined seismic and acoustic stations on a Cartesian grid spanning 2,000,000 km2
There have been some noteworthy events recorded recently by these stations including the meteor that entered the Earth’s atmosphere above Chelyabinsk Russia in February, 2013. Signals from this event were recorded by infrasound arrays after circling the globe twice [2] and by the Transportable Array
Summary
In 1883, the Krakatoa volcano awakened the world to the existence of sub audible sound waves in the atmosphere. We know that a wide variety of other naturally-occurring phenomena such as tornadoes, landslides, earthquakes, meteors, aurora, atmospheric turbulence, and interacting waves on the surface of the ocean generate infrasound. Infrasound is generated by a large number of man-made sources including nuclear and chemical explosions, rockets and supersonic aircraft.
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