ETHER WAVES FROM EXPLOSIONS

Relative Location of Explosions Using Surface Waves

A method of relative location for explosions using Rayleigh waves is developed and tested. It involves cross correlating a wavetrain with a previously recorded signal from the same source region and &?.t&mining a relative "travel-time" from the peak in the -ross correlation trace. Locations are fairly accurate, but do not compare with the precision obtained with body waves and relative travel-t...

Sfort-pbriod Propagation Op Inprasonic Waves Prom Nuclear Explosions

Anomalous surface waves from Lop Nor nuclear explosions: Observations and numerical modeling

Surface waves from the Chinese test site of Lop Nor are analyzed using long-period and broadband stations located at regional and teleseismic distances and at different azimuths. For most azimuths, strong Love waves between 0.02 and 0.04S Hz are observed with an amplitude of up to 10 times that of the Rayleigh waves. In addition, an anomalous early Rayleigh wave train is observed at some statio...

Craters from Impacts and Explosions

Supernova Explosions: Lessons from Spectropolarimetry

Supernova can be polarized by an asymmetry in the explosion process, an off-center source of illumination, scattering in an envelope distorted by rotation or a binary companion, or scattering by the circumstellar dust. Careful polarimetry is the most powerful tool to study the 3-D geometry of supernovae. A deep understanding of the 3-D geometry of SNe is essential in using them as calibrated di...