Study of Acoustic-Gravity Wave Generation by Nuclear Detonations
Semi-annual technical rept. 16 Feb-31 Aug 1971
MOUNT AUBURN RESEARCH ASSOCIATES INC NEWTON UPPER FALLS MA
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Three different acoustic phenomena relevant to nuclear test detection and diagnostics are discussed in this report 1 The generation of long period 3-10 minute acoustic-gravity waves is analyzed in terms of a Lamb mode propagation theory. One result of the analysis is that yield-amplitude proportionality is predicted to break down for very large yield detonations. 2 The generation and propagation of short period 1-60 seconds acoustic pulses is treated by means of weak shock theory. Yield and height of burst scaling laws are derived for the far-field period. The dependence of period on atmospheric conditions and propagation path is also discussed. 3 The variation of long range Rayleigh wave amplitude with yield and height of burst is discussed for detonations at lower altitudes than previously treated.
- Atmospheric Physics