Некоторые результаты применения шкаяы интенсивности землетрясений на сейсмических станциях СССР

Summary

The magnitude of an earthquake (M) introduced by C. F. Richter and B. Gutenberg is determined in the USSR on the basis of surface waves only. It has been found that expressions (3) and (6) are more suitable for use than formula (1). Equation (7) gives the statistical correlation between these two methods of magnitude determination. No corrections toM are used; it is probably the main reason for the systematic discrepancy between the values ofM published in Soviet bulletins and in bulletins of other countries. It has been found that the stations of the Pacific Ocean coast when compared with other stations of the country give too small values ofM for the Pacific earthquakes, especially for those of Kamchatka-Japan region. In the case of continental earthquakes the difference between two ranges of magnitude values has in general opposite sign.