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Transition Probabilities between Seismic Regions

Authors :
Cinna Lomnitz
Source :
Geophysical Journal International. 13:387-391
Publication Year :
1967
Publisher :
Oxford University Press (OUP), 1967.

Abstract

Summary Earlier work on preferred patterns of transition of earthquake activity between seismic regions has been inconclusive. The problem is restated in terms of 51 seismic regions. A series of 4164 earthquakes covering the period 1904-1954 is analyzed for randomness of transition between consecutive events. Using the multinomial distribution as a null hypothesis, contingency tables are derived for the sequence of events M ≥ 6.5 and M ≥ 7.0. It is found that the hypothesis of randomness is rejected for both sequences at the 0.975 significance level. This result is attributed to the presence of aftershocks.

Details

ISSN :
1365246X and 0956540X
Volume :
13
Database :
OpenAIRE
Journal :
Geophysical Journal International
Accession number :
edsair.doi...........3cbd4fd5c86f35165099cbe0b57409dc
Full Text :
https://doi.org/10.1111/j.1365-246x.1967.tb03136.x