A study of surface seismic waves with the assistance of a new tool ? particle motion records

Abstract

It has been recognised for a long time groundroll has an elliptical, vertically polarised particle motion. Body waves have a rectilinear particle motion. Interference between bodywaves can result in an elliptical type motion. Particle motion records provide a means of identifying these seismic waves and understanding the result of their interference upon particle motion. This is useful when assessing the results of filter techniques based upon either the ellipticity, or phase difference between components, of groundroll motion.