作者: S. W. Stewart , L. C. Pakiser
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摘要: The GNOME underground nuclear explosion was recorded at 11 locations ranging from 31 to 431 km north of ground zero near Carlsbad, New Mexico. seismograms are characterized by the arrival many phases within a few seconds first arrivals. Interpretation arrivals and more prominent later indicates that earth's crust is about 50 thick in eastern Several were tentatively identified as reflections crustal layers base crust. A mantle shear phase with velocity 4.45 km/sec. (auth)