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Strong ground motion attenuation relationships for subduction zone earthquakes

R. R. Youngs, S. J. Chiou, W. J. Silva and J. R. Humphrey
Strong ground motion attenuation relationships for subduction zone earthquakes
Seismological Research Letters (February 1997) 68 (1): 58-73

Abstract

We present attenuation relationships for peak ground acceleration and response spectral acceleration for subduction zone interface and intraslab earthquakes of moment magnitude M 5 and greater and for distances of 10 to 500 km. The relationships were developed by regression analysis using a random effects regression model that addresses criticism of earlier regression analyses of subduction zone earthquake motions. We find that the rate of attenuation of peak motions from subduction zone earthquakes is lower than that for shallow crustal earthquakes in active tectonic areas. This difference is significant primarily for very large earthquakes. The peak motions increase with earthquake depth and intraslab earthquakes produce peak motions that are about 50 percent larger than interface earthquakes.


ISSN: 0895-0695
EISSN: 1938-2057
Coden: EAQNAT
Serial Title: Seismological Research Letters
Serial Volume: 68
Serial Issue: 1
Title: Strong ground motion attenuation relationships for subduction zone earthquakes
Affiliation: Geomatrix Consultants, San Francisco, CA, United States
Pages: 58-73
Published: 199702
Text Language: English
Publisher: Seismological Society of America, Eastern Section, [El Cerrito, CA], United States
References: 27
Accession Number: 1997-033088
Categories: Seismology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 3 tables
Secondary Affiliation: Pacific Engineering and Analysis, USA, United StatesLahontan GeoScience, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute.
Update Code: 199711
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