Accession Number : AD0693132

Title :   ON THE APPLICATION OF AIR-COUPLED SEISMIC WAVES.

Descriptive Note : Environmental research papers no. 302,

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : Crowley,Francis A. ; Ossing,Henry A.

Report Date : JUL 1969

Pagination or Media Count : 43

Abstract : Seismic measurements taken on Rogers Lake Playa, Edwards AFB, California, were prompted by a concern that ground vibrations excited by F-1 rocket engines might affect the role of playa cracking. These measurements relate to other Air Force interests. Specifically, the note characterizes seismic waves excited by F-1 rockets, sonic booms, and atmospheric explosions to: (1) Playa landing areas; (2) Ground conditions affecting sonic booms and rocket firings sensed in buildings; (3) Detection of accoustic sources using seismic systems; (4) The playa's selective distortion of acoustic wave characteristics; and (5) Consideration of a playa seismic alarm system. (Author)

Descriptors :   (*ROCKET ENGINE NOISE, *SEISMIC WAVES), (*SEISMIC WAVES, SOILS), (*LANDING FIELDS, CRACK PROPAGATION), PLAYAS, CRACKS, SONIC BOOM, AIRBURST, LANDING FIELDS, SOIL MECHANICS

Subject Categories : Soil Mechanics
      Seismology
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE