A SEISMOGRAPH CALIBRATION TECHNIQUE AND PREDICTION OF SEISMOMETER PARAMETERS.

Abstract : A seismograph calibration and seismometer parameter prediction technique using a calibration function constructed from a given set of amplitude and phase spectra is discussed in this report. The amplitude response of the seismograph is determined by comparing the spectral content of the input calibration function with the spectral content of its transformed output. For field personnel, where data processing hardware is not available, a method for predicting the amplitude response of the seismograph from the output calibration function is discussed. The possibility of predicting the seismometer free period and damping parameters is also suggested. (Author)