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Reproducing the supershear portion of the 2002 Denali earthquake rupture in laboratory

Mello, M. and Bhat, H. S. and Rosakis, A. J. and Kanamori, H. (2014) Reproducing the supershear portion of the 2002 Denali earthquake rupture in laboratory. Earth and Planetary Science Letters, 387 . pp. 89-96. ISSN 0012-821X. https://resolver.caltech.edu/CaltechAUTHORS:20140313-082925394

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Abstract

A notable feature of the 2002 View the M_w 7.9 Denali, Alaska, earthquake was that a unique set of near-field seismic ground motion records, at Pump Station 10 (PS10), captured the passage of a supershear rupture followed by what was surmised to be a secondary slip pulse, ‘Trailing Rayleigh Pulse’ (Dunham and Archuleta, 2004 and Mello et al., 2010). Motivated by the unique features contained in these near-field ground motion records, which were obtained only 3 km away from the fault, a series of scaled laboratory earthquake experiments was conducted in an attempt to replicate the dominant features of the PS10 ground motion signatures. Particle velocity records bearing a striking similarity to the Denali ground motion records are presented and discussed. The success of the comparison opens up the possibility of routinely generating near source ground motion records in a scaled and controlled laboratory setting that could be of great societal interest towards assessing seismic hazard from large and potentially devastating earthquakes.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/j.epsl.2013.11.030DOIArticle
ORCID:
AuthorORCID
Mello, M.0000-0003-2129-9235
Rosakis, A. J.0000-0003-0559-0794
Kanamori, H.0000-0001-8219-9428
Additional Information:© 2013 Elsevier B. V. Received 7 June 2013; Received in revised form 12 November 2013; Accepted 13 November 2013; Available online 5 December 2013. The authors gratefully acknowledge the National Science Foundation for the research grant (Award No. EAS-0911723) provided under the American Recovery and Reinvestment Act (ARRA) of 2009 (Public Law 111-5). H.S.B. thanks Amaury Vallage for help provided in preparing Fig. 1. The authors are grateful to Eric Dunham and one anonymous reviewer for their helpful comments.
Group:GALCIT
Funders:
Funding AgencyGrant Number
NSFEAS-0911723
2009 American Recovery and Reinvestment Act (ARRA)UNSPECIFIED
Subject Keywords:supershear earthquake; laboratory earthquakes; trailing Rayleigh pulse; dynamic rupture
Record Number:CaltechAUTHORS:20140313-082925394
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140313-082925394
Official Citation:M. Mello, H.S. Bhat, A.J. Rosakis, H. Kanamori, Reproducing the supershear portion of the 2002 Denali earthquake rupture in laboratory, Earth and Planetary Science Letters, Volume 387, 1 February 2014, Pages 89-96, ISSN 0012-821X, http://dx.doi.org/10.1016/j.epsl.2013.11.030. (http://www.sciencedirect.com/science/article/pii/S0012821X1300664X)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44289
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:13 Mar 2014 22:04
Last Modified:13 Jul 2020 21:47

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