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GPS constraints on M 7-8 earthquake recurrence times for the New Madrid seismic zone

Seismological Research Letters

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Abstract

Newman et al. (1999) estimate the time interval between the 1811-1812 earthquake sequence near New Madrid, Missouri and a future similar sequence to be at least 2,500 years, an interval significantly longer than other recently published estimates. To calculate the recurrence time, they assume that slip on a vertical half-plane at depth contributes to the current interseismic motion of GPS benchmarks. Compared to other plausible fault models, the half-plane model gives nearly the maximum rate of ground motion for the same interseismic slip rate. Alternative models with smaller interseismic fault slip area can satisfy the present GPS data by having higher slip rate and thus can have earthquake recurrence times much less than 2,500 years.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
GPS constraints on M 7-8 earthquake recurrence times for the New Madrid seismic zone
Series title:
Seismological Research Letters
Volume
72
Issue:
6
Year Published:
2001
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Seismological Research Letters
First page:
745
Last page:
753