Observed high-altitude pressure waves from an underground and a surface explosion

摘要: Measurements of high-altitude pressure waves from underground and surface explosions are interest, as these can affect ionospheric electron density be a source infrasonic signals. Canisters, equipped with parachutes, were dropped aircraft to determine time histories radiated by the ground above an nuclear explosion chemical explosion. These canisters contained transducers document acceleration well transmitter relay information receiver stations. We found observed consistent calculated motion records. The peak blast wave overpressures agreed predicted scaled values. Observed histories, however, had shorter positive phase duration than scaling.