地震波資料のファイリングと自動処理

Abstract

Basic 4 stages of interpretation of seismic waves are outlined and methods for editing andpreliminary processing of seismic data are examined.Seismic data are filed on magnetic library tape and index-files for libraries are provided ondisk.pack for searching proper data according to various conditions for detailed interpretations.Using the data libraries methods for automated detection and identification of seismic wavesfrom local small earthquakes are developed as follows 1) determination of initial parts of P waveswith time varing spectra, 2) determination of P onset using amplitudes, directions and rectilinearitiesof particle motions and 3) identification of S phases from non-linear process based on the abovequantities of particle motions.