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Download the Paper (325 K, PDF file) - January 28, 2007 Tell a colleague about it. Printing Tips: Select 'print as image' in the Acrobat print dialog if you have trouble printing.

ABSTRACT:
We introduce the use of prototype point patterns to characterize the behavior of a typical aftershock sequence from the global Harvard earthquake catalog. These prototypes are used not only for data description and summary but also to identify outliers and to classify sequences into groups exhibiting similar aftershock behavior. We find that a typical shallow earthquake of magnitude between 7.5 and 8.0 has five aftershocks of magnitude at least 5.5, and these aftershocks are roughly evenly distributed in logtime between 0.113 days and 2.0 years after the mainshock. The relative magnitudes and distances from the mainshock for the typical aftershock sequence are characterized as well.

SUGGESTED CITATION:
Frederic P. Schoenberg and Katherine Tranbarger, "Description of earthquake aftershock sequences using prototype point patterns" (January 28, 2007). Department of Statistics, UCLA. Department of Statistics Papers. Paper 2007010107.
http://repositories.cdlib.org/uclastat/papers/2007010107