Seismic Measurements for the Pre-Dice Throw II-1 (TNT Shot), Pre-Dice Throw II-2 (AN/FO Shot) and Dice Throw Events

During 1975 and 1976 three large chemical explosions of the Pre-Dice Throw and Dice Throw series were detonated on the surface at the White Sands Missile Range, New Mexico. The data for these explosions are given in this report. The report also presents the results of some seismic field measurements over the distance range of 0.91 km (3,000 ft) to 17.7 km (58,000 ft). The P waves and Rayleigh waves from these events are described (travel times and amplitudes) in the report. One of the predominant features of the seismograms was the presence of a very large amplitude, low velocity, fundamental mode Rayleigh wave. This wave had a velocity only slightly greater than the speed of sound in air. The implications of this low phase velocity for the local structure is given by Reinke (1977) and is not treated here. The maximum amplitudes observed for this phase, as well as the amplitudes of the higher mode Rayleigh waves are given.