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Scaling differences between large interplate and intraplate earthquakes

Scholz, C. H. and Aviles, C. A. and Wesnousky, S. G. (1986) Scaling differences between large interplate and intraplate earthquakes. Bulletin of the Seismological Society of America, 76 (1). pp. 65-70. ISSN 0037-1106. https://resolver.caltech.edu/CaltechAUTHORS:20140813-141242321

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Abstract

A study of large intraplate earthquakes with well-determined source parameters shows that these earthquakes obey a scaling law similar to large interplate earthquakes, in which M_0 ∝ L^2 or u = αL, where L is rupture length and u is slip. In contrast to interplate earthquakes, for which α ≈ 1 × 10^(−5), for for the intraplate events α ≈ 6 × 10^(−5), which implies that these earthquakes have stress drops about 6 times higher than interplate events. This result is independent of focal mechanism type. This implies that intraplate faults have a higher frictional strength than do plate boundaries, and hence that faults are velocity or slip weakening in their behavior. This factor may be important in producing the concentrated deformation that creates and maintains plate boundaries.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://bssa.geoscienceworld.org/content/76/1/65.abstractPublisherArticle
Additional Information:© 1986, by the Seismological Society of America. Manuscript received 29 July 1985. This work was supported by the National Aeronautics and Space Administration under Grant NAG 5-446. We thank L. R. Sykes and D. W. Simpson for critical reviews.
Funders:
Funding AgencyGrant Number
NASANAG 5-446
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Lamont-Doherty Geological Laboratory3908
Issue or Number:1
Record Number:CaltechAUTHORS:20140813-141242321
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140813-141242321
Official Citation:C. H. Scholz, C. A. Aviles, and S. G. Wesnousky Scaling differences between large interplate and intraplate earthquakes Bulletin of the Seismological Society of America, February 1986, v. 76, p. 65-70
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48528
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:13 Aug 2014 21:27
Last Modified:03 Oct 2019 07:04

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