Abstract
In this paper, first discussing briefly the instantaneous spectrum theory. Then, the instantnaeous spectra and Fourier spectra of three seismic sequences are calculated, and comparing them to explain the superior characteristics of instantaneous spectrum. Finally, the earthquake tendency of North China is estimated by using the instantaneous spectrum theory. The results show that not only the occurrence time of the coming large earthquake, but also its magnitude instantaneous can be estimated by using instantaneous spectrum of the seismic sequence.
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The Chinese version of this paper appeared in the Chinese edition ofActa seismologica Sinica,15, 68–75, 1993.
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Zheng, ZZ., Hu, JB. Instantaneous spectrum analysis and its application in estimation of earthquake tendency. Acta Seismologica Sinica 6, 465–473 (1993). https://doi.org/10.1007/BF02650959
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DOI: https://doi.org/10.1007/BF02650959