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Algorithm M8 (Keilis-Borok and Kossobokov, 1984, 1987,
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1990) was designed by retroactive analysis of
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seismic
dynamics preceding the greatest (M³8)
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earthquakes
worldwide, as well as the MSc
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algorithm for
reducing the area of alarm
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(Kossobokov,Keilis-Borok, Smith, 1990)
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The National
Earthquake Information Center Global
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Hypocenters
Data Base (US GS/NEIC GHDB, 1989) is
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sufficiently
complete since 1963.
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This allows a
systematic application of M8 and MSc
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algorithm since 1985.
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