Observation of L g and S Wave Propagation along the Ultra-Long Range Profile “Quartz”, Russia

Abstract

Seismic records from nuclear explosions recorded by Deep Seismic Sounding profiles provide valuable information about the propagation of regional and teleseismic S waves and L-g phases across a variety of tectonic structures of Northern Eurasia, Using the data from profile "Quartz", we demonstrate that the short-period L-g propagates effectively within the Baltic Shield and is strongly attenuated under the West Siberian Basin, We present an evidence for L-g leakage into the uppermost mantle and also propose multicomponent amplitude measurement and noise correction techniques that facilitate and improve the analysis of secondary phases.