In this paper an attempt has been made to analyse the World shallow focus earth-quakes by the method ofGutenberg andRichter. Frequency-magnitude analysis of various earthquakes indicate that in the relation logN=a−b M, the ratio (b/a)−1 satisfies fairly well the seismicity of a region and it is felt that this ratio may be used as a measure of seismicity for a given region.
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Chouhan, R.S., Singh, C.L. & Singh, R.D. A new measure of seismicity. PAGEOPH 70, 47–60 (1968). https://doi.org/10.1007/BF00875140
- Shallow Focus