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Seismic Decoupling Experiment: A Comparison of Seismic Measurements Taken in the Diamond Dust, Diamond Mine, and Mine Dust HE Series of Events
ENVIRONMENTAL RESEARCH INST OF MICHIGAN ANN ARBOR
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The MINE DUST HE shot of May 10, 1972 was recorded at a number of seismograph stations operated by the University of Michigan, the U. S. Geological Survey, and by the NOAA Special Projects Group. The recordings obtained at the close-in University of Michigan stations disclosed that this shot was a factor of 1.30 larger than the previous HE shot of this series, based on particle velocity measurements. The geometric means of an energy ratio measure indicated that MINE DUST HE was 1.23 times larger than DIAMOND MINE HE that DIAMOND DUST was 5.67 times larger than MINE DUST HE that DIAMOND MINE was 6.32 times larger than DIAMOND DUST. Modified author abstract
APPROVED FOR PUBLIC RELEASE