THE ATMOSPHERIC PRESSURE WAVE GENERATED BY A NUCLEAR EXPLOSION.
Scientific rept. no. 1
MICHIGAN UNIV ANN ARBOR RADIATION LAB
Pagination or Media Count:
The problem of describing the pressure wave that an observer located on the ground will detect at a distance of a few thousand kilometers from a low altitude nuclear explosion is investigated. The result obtained entails the correlation of the theoretical values of the period and amplitude with those deter mined from microbarograph recordings. For the frequency spectrum considered, an isothermal atmospheric temperature model is sufficiently accurate and allows an analytic development of the Greens function. This Greens function makes it possible to express the frequency dependent pressure at an observers position in terms of the pressure generated by a nuclear blast. It is convenient to treat this explosion by using a form of Huygens principle, rather than a point source representation. This configuration permits the determination of the relationship between the energy of the explosion and the amplitude of the theoretical pressure pulse. The final step involves the performing of the inverse Fourier transform in order to determine the time variation of the pressure wave train. Author