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Triggered Earthquakes and the 1811–1812 New Madrid, Central United States, Earthquake Sequence

Hough, Susan E. (2001) Triggered Earthquakes and the 1811–1812 New Madrid, Central United States, Earthquake Sequence. Bulletin of the Seismological Society of America, 91 (6). pp. 1574-1581. ISSN 0037-1106. https://resolver.caltech.edu/CaltechAUTHORS:20140804-075615515

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Abstract

The 1811–1812 New Madrid, central United States, earthquake sequence included at least three events with magnitudes estimated at well above M 7.0. I discuss evidence that the sequence also produced at least three substantial triggered events well outside the New Madrid Seismic Zone, most likely in the vicinity of Cincinnati, Ohio. The largest of these events is estimated to have a magnitude in the low to mid M 5 range. Events of this size are large enough to cause damage, especially in regions with low levels of preparedness. Remotely triggered earthquakes have been observed in tectonically active regions in recent years, but not previously in stable continental regions. The results of this study suggest, however, that potentially damaging triggered earthquakes may be common following large mainshocks in stable continental regions. Thus, in areas of low seismic activity such as central/eastern North America, the hazard associated with localized source zones might be more far reaching than previously recognized. The results also provide additional evidence that intraplate crust is critically stressed, such that small stress changes are especially effective at triggering earthquakes.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1785/0120000259DOIArticle
http://bssa.geoscienceworld.org/content/91/6/1574.abstractPublisherArticle
Additional Information:© 2001 Seismological Society of America. Manuscript received 12 October 2000. I thank Joan Gomberg, Aron Meltzner, Emily Brodsky, Nano Seeber, Hiroo Kanamori, and an anonymous reviewer for reviews and discussions that greatly improved this manuscript; Jerry Hough for advice regarding archival information; and the staff of the Filson Club for their assistance.
Issue or Number:6
Record Number:CaltechAUTHORS:20140804-075615515
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140804-075615515
Official Citation:Susan E. Hough Triggered Earthquakes and the 1811–1812 New Madrid, Central United States, Earthquake Sequence Bulletin of the Seismological Society of America, December 2001, v. 91, p. 1574-1581, doi:10.1785/0120000259
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47865
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:04 Aug 2014 17:20
Last Modified:03 Oct 2019 06:57

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