SEDAN LONG RANGE BLAST PROPAGATION

摘要

Microbarograph records of air-blast waves from the Sedan shot were made at eight stations in California and Nevada at ranges from 100 to 230 miles. A 1.2-ton high-explosive calibration shot was fired at Sedan minus2 minutes to estab¬lish propagation conditions for bursts in air. Comparison of recorded signals indicated that Sedan blast-wave amplitudes averaged 20 percent of amplitudes which would have been transmitted had the Sedan yield been free-air burst. In¬dividual transmissivity values ranged from 5 to 35 percent. Variations around the average are probably caused by atmospheric turbulence.