Earth Motion and Stress Measurements, Project LN 302, Operation Dial Pack.
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS
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The objectives of this study were to measure and to analyze the earth motions and stresses produced by the Dial Pack 500-ton TNT detonation. Particle acceleration, particle velocity, and soil stress gages were installed to measure the ground motions and stresses in the 1,500- to 50-psi predicted air-blast overpressure region 83 to 540 feet from ground zero at depths below the ground surface of 1.5 to 30 feet. Time histories of all successful measurments are included in Appendixes A and B. Ground shock arrival time data indicated the occurrence of outrunning ground motion at the ground surface at a distance of about 600 feet from ground zero, or the 35-psi pressure level. Modified author abstract
- Soil Mechanics