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Complements to Magnitudes of large shallow earthquakes from 1904 to 1980



Complements to Magnitudes of large shallow earthquakes from 1904 to 1980



Physics of the Earth and Planetary Interiors 34(1-2): 17-23



In the previous paper, magnitudes of large earthquakes of the world were determined on a very uniform basis and catalogued. In order to arrive at a more homogeneous catalog for a study of global seismicity, some complements are presented. The major complements are as follows: (1) The M (sub s) values for the period 1904-1909 in the previous paper were overestimated, in the extreme case by 0.5 magnitude units. (2) The m (sub B) values for the period 1904-1908 in the previous paper were overestimated. (3) The magnitudes of deep and intermediate shocks which are listed in Seismicity of the Earth by Gutenberg and Richter are found to be approximated by m (sub B) + (m (sub B) -7)/4. (4) The catalogs of m (sub B) for shallow, intermediate and deep shocks are continued for the period up to 1980.

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Accession: 018595537

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DOI: 10.1016/0031-9201(84)90081-5


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