Accession Number : AD0357953

Title :   Underwater Pressures From Underwater Bursts,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS

Personal Author(s) : Swift, E., Jr. ; Bampfield, J. F. ; Ingram, L. ; Kirkland, E. R. ; Newton, V. S.

Report Date : 15 AUG 1960

Pagination or Media Count : 100

Abstract : Free-field underwater pressures were measured during Shots Wahoo and Umbrella in order to provide basic data for the determination of critical damaging ranges and safe delivery distances of submarines and surface vessels in the vicinity of underwater nuclear detonations. Pressures were recorded on magnetic tape from piezoelectric and electromechanical pickups in the water; the electronic recording equipment was self-contained and operated automatically. Backup was provided by mechanical gages; both self-contained pressure-time gages and ballcrusher peak-pressure gages were used. A ground wave of unexpectedly lof amplitude appeared on all records except at the 500-foot station; its apparent velocity was 99,300 ft/sec. Shock-wave pressures decreased near the bottom at all distances; pressures very close to the surface also were low. (Author)

Descriptors :   *UNDERWATER EXPLOSIONS, BLAST.

Subject Categories : Nuclear Weapons
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE