New synthetic seismogram technique with application to coal measures of the central city basin

Abstract

The effect of shallow coal seams on recording seismic reflections from deeper beds is examined by means of synthetic seismograms. An expression based on acoustic impedance permits the calculation of reflection coefficient, as a function of frequency, and synthetic seismograms, with or without surface multiples. Results indicate that using lower frequencies (5?25 Hertz) would permit recording below the coal measures encountered in a particular hole in the Central Sydney Basin.