Abstract

Six short-period seismometers of different makes and models, which are in common use, were used to record several underground nuclear detonations at teleseismic distances. A comparison of the seismograms obtained showed no clear superiority of one type seismometer over another. However, arrival times for a given phase recorded by the various seismometers showed discrepancies which could introduce errors in crustal and upper mantle structural determinations.

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