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{{#category_index:A|airwave}} 1. Energy that is sometimes seen on seismic records that travels in the air at the velocity of sound: V≈1051+1.1 F ft/s, where F=Fahrenheit temperature, or V≈331.5+0.607 C m/s, where C=Celsius temperature. 2. Audible sounds like distant thunder associated with the arrival of P-waves from nearby earthquakes.