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The seismogram below is vertical earth motion from the 1992 May 21 Lop Nor
PRC 700-1800 kiloton underground nuclear test. It was recorded from a
short period borehole seismometer at 748 meters depth at the OGS Observatory
near Leonard. A direct P arival plus reflected PP and PKKP are marked.
More information on this nuclear blast and seismogram
The seismogram below is vertical earth motion from the 1992 May 21 Lop Nor PRC 700-1800 kiloton underground nuclear test. It was recorded from a short period borehole seismometer at 748 meters depth at the OGS Observatory near Leonard. A direct P arival plus reflected PP and PKKP are marked. More information on this nuclear blast and seismogram