Impulse propagation in the nocturnal boundary layer: analysis of the geometric component.


On clear dry nights over flat land, a temperature inversion and stable nocturnal wind jet lead to an acoustic duct in the lowest few hundred meters of the atmosphere. An impulsive signal propagating in such a duct is received at long ranges from the source as an extended wave train consisting of a series of weakly dispersed distinct arrivals followed by a… (More)
DOI: 10.1121/1.3699174