炭山地震観測室における地震観測 -局所地震の Particle Motion の性質について-

Abstract

Ground particle motions of seismic waves observed at the Sumiyama Seismic Station fromlocal small earthquakes occuring in and around Kyoto are analyzed to discuss site effects.Particle motion diagrams of both P and S waves have good linearity and give the directionof wave propagations and the apparent angles of incidence of P and SV waves with goodaccurary. The relations of apparent angles of incidence of P and SV waves and the polariza-tion of S waves in the horizontal plane are discussed.