A seismic investigation of the Witwatersrand earth tremors
作者： H. A. Oliver , P. G. Gane , A. L. Hales
关键词: Seismology 、 Geology 、 Seismometer
摘要: The results are presented of an investigation the foci Witwatersrand earth tremors by means 5 small mechanical seismographs. Timing accuracy about 0.05 sec. was obtained use synchronous electric clocks at each station, time marks from which were correlated daily radio signals. instruments described, and account locating procedure is given. average velocities for area found to be Vp = 5.40 ± .07 km/sec., Vs 3.19 .03 km/sec. energy in a large tremor estimated order 1018 ergs.
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sci-hub.st 参考文章(4)
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