PRESSURE-TIME MEASUREMENTS IN DEEP WATER
OFFICE OF NAVAL RESEARCH ARLINGTON VA ARLINGTON United States
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The objectives of Project 6.7a were 1 to obtain the pressure-time history of the underwater pressures as a function of range in deep water from the Mike shot of Operation Ivy and 2 to attempt a correlation of these data with the basic problem of air-earth-water coupling of blast waves and possible effects to be expected on underwater ordnance. At the conclusion of the Mike shot, none of the instrumentation was recovered. Therefore no positive results are available. The following possible explanations of the loss of the instrumentation are presented 1 The water column thrown up from the Mike shot assuming a 10-Mt yield over a free water surface would have had a radius of 9160 ft. The accompanying inward motion of the water in the adjacent area would extend considerably farther out. The tuna can and may have gone up the spout. Discussions with authorities in this field have led the Project Officer to believe that this is the most plausible explanation for the loss of equipment. 2 The underwater pressures were so great at the ranges in question that the tuna cans were ruptured below the water line and sank.
- Nuclear Weapons
- Physical and Dynamic Oceanography
- Fluid Mechanics