HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) References Citation Map Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by TSAPANOS, T. M. Search for Related Content GeoRef GeoRef Citation

Spatial distribution of the difference between the magnitudes of the main shock and the largest aftershock in the circum-Pacific belt

UNIVERSITY OF THESSALONIKI GEOPHYSICAL LABORATORY, P.O. BOX 352-1, 54006 THESSALONIKI, Greece

Abstract

The distribution of the magnitude difference D₁ between the main shock and the largest aftershock for large circum-Pacific earthquakes is observed to be peaked at 1.2 magnitude units, in accord with Bath's law, but also at 1.8 magnitude units. The peak at 1.8 has been not noted before and is shown here with the T-test to be statistically valid. The observed spatial distribution of the sequences is the basis to suggest that, along circum-Pacific convergent plate boundaries, values of D₁, tend to be larger for earthquake sequences within back-arc areas as compared to sequences closer to the plate interface, although admittedly a good number of exceptions to this generalization are also observed to exist.

This article has been cited by other articles:

				A Modified Form of Bath's Law Bulletin of the Seismological Society of America, October 1, 2004; 94(5): 1968 - 1975.

				K. R. Felzer, R. E. Abercrombie, and G. Ekstrom A Common Origin for Aftershocks, Foreshocks, and Multiplets Bulletin of the Seismological Society of America, February 1, 2004; 94(1): 88 - 98. [Abstract] [Full Text] [PDF]