Accession Number : AD0484191

Title :   THE EARLY EFFECT OF AN EXPLOSION IN A MULTI-LAYERED MEDIUM,

Corporate Author : CALIFORNIA UNIV BERKELEY

Personal Author(s) : Pinney, Edmund

Report Date : 1965

Pagination or Media Count : 30

Abstract : When an explosion occurs on or in a sheet water overlying a geological formation consisting of horizontal strata, the earliest impulses reaching an observer consist of dilational waves only. This makes it possible to neglect distortional waves and to consider the medium as being acoustic in nature with velocity of propagation that of the dilational waves. Except quite near the explosion, linear acoustic theory may be used with the actual explosion source replaced by an equivalent linear singularity. The general multi-layer theory is developed. The theory of the initial pulse is completed for the case in which the medium below the water is homogeneous without stratification. The result is specialized to the case of an exponential type source.

Descriptors :   (*EXPLOSION EFFECTS, DETONATION WAVES), SHOCK WAVES, WATER, GEOLOGY, STRUCTURAL GEOLOGY, VELOCITY, PRESSURE, DENSITY, SOUND TRANSMISSION, INTEGRALS, BAROMETRIC PRESSURE, MATHEMATICAL ANALYSIS, STRATIGRAPHY.

Subject Categories : Explosions
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE