Accession Number : AD0616969

Title :   AIR-BLAST COUPLING TO PROGRADE AND RETROGRADE SURFACE WAVES.

Descriptive Note : Rev. ed.,

Corporate Author : SUFFIELD EXPERIMENTAL STATION RALSTON (ALBERTA)

Personal Author(s) : Jones,G. H. S. ; Maureau,G. T. ; Cyganik,S. A.

Report Date : 12 JUN 1963

Pagination or Media Count : 10

Abstract : It is shown that on the Suffield test site surface-burst changes of TNT generate a dispersed surface wave directly in the ground, which may be either prograde or retrograde, and, at the same time, an approximately constant-frequency air-coupled wave. The phase relationship between the aircoupled wave and the dispersed wave is sensitive to slight changes in the dispersive properties of the layered mediums. Comparison is made with the prograde and retrograde pulses generated by buried charges, and the seismograms from the large charge series are supplemented by synthetic seismograms produced by adding the air-coupled train from small surface-burst charges to the dispersed train produced by small contained charges. (Author)

Descriptors :   (*AIRBURST, SEISMIC WAVES), (*SEISMIC WAVES, PROPAGATION), SEISMOGRAPHS, STRATIGRAPHY, MECHANICAL WAVES, SHOCK WAVES, SURFACE BURST, UNDERGROUND EXPLOSIONS

Distribution Statement : APPROVED FOR PUBLIC RELEASE