The Microbarographic Oscillations Produced by the Explosions of Hydrogen Bombs in the Marshall Islands *

Abstract

Concerning the pressure oscillations due to the hydrogen-bomb explosions in the Marshall Islands, the records of routine barographs at the fourteen stations in the Pacific territory were examined and the following facts were found: (1) No trace of the oscillation could be detected on the barograms at the stations located nearly to the west of the explosion site in spite of the comparatively close distance. (2) Speed of the wave propagating eastwards was higher than that of the westward wave by about 50 m/sec.