LABORATORY SIMULATION OF WAVES GENERATED BY UNDERWATER NUCLEAR EXPLOSIONS.
NAVAL CIVIL ENGINEERING LAB PORT HUENEME CALIF
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The kinematics of surface gravity waves produced in water 2.5 feet deep in a basin 90 feet square by a sudden, localized disturbance was studied through measurements of height and period. The waves were generated by the quick withdrawal or immersion, or combinations of these actions, of a 14-foot-diameter half-paraboloid plunger located near the mid-point of one wall of the basin. Smaller plungers of diverse shapes were also used. Measurements were made both in the constant-depth portion of the basin and over a beach with a uniform slope of 113.6, which was directly opposite the plunger. At the shoreline about 80 feet from the plunger, waves produced by a sudden withdrawal, for example, were 3 inches high, with a maximum period of 3 seconds. The waves compare adequately with those predicted by the theory of Kranzer and Keller, although they were 40 smaller and 20 shorter. By extrapolation, it was found that waves were produced which adequately simulated those from the actual underwater detonation of a high-energy explosive 5 tons TNT and a nuclear device 20 kt equivalent. It is concluded that with proper scaling the plunger can be used to simulate waves from such causes. Author