Abstract

The 19 October, 1985 Ardsley, New York magnitude 4.0 mainshock can be characterized as the superposition of three sub-events. Aftershocks of the 31 March, 1982 Miramichi, New Brunswick magnitude 5.0 earthquake occur at nearly the same depth as the mainshock, approximately 3 km, and at least one aftershock is resolvably deeper by several kilometers. These results are interpreted from observations of digital recordings of near-regional seismograms.

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