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Title: Strong motion duration and earthquake magnitude relationships

Abstract

Earthquake duration is the total time of ground shaking from the arrival of seismic waves until the return to ambient conditions. Much of this time is at relatively low shaking levels which have little effect on seismic structural response and on earthquake damage potential. As a result, a parameter termed ``strong motion duration`` has been defined by a number of investigators to be used for the purpose of evaluating seismic response and assessing the potential for structural damage due to earthquakes. This report presents methods for determining strong motion duration and a time history envelope function appropriate for various evaluation purposes, for earthquake magnitude and distance, and for site soil properties. There are numerous definitions of strong motion duration. For most of these definitions, empirical studies have been completed which relate duration to earthquake magnitude and distance and to site soil properties. Each of these definitions recognizes that only the portion of an earthquake record which has sufficiently high acceleration amplitude, energy content, or some other parameters significantly affects seismic response. Studies have been performed which indicate that the portion of an earthquake record in which the power (average rate of energy input) is maximum correlates most closely with potentialmore » damage to stiff nuclear power plant structures. Hence, this report will concentrate on energy based strong motion duration definitions.« less

Authors:
;  [1];  [2]
  1. EQE International, Inc., San Francisco, CA (United States)
  2. RPK Structural Mechanics Consulting, Yorba Linda, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (United States); EQE International, Inc., San Francisco, CA (United States); RPK Structural Mechanics Consulting, Yorba Linda, CA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
67453
Report Number(s):
UCRL-CR-117769
ON: DE95010685; TRN: 95:015213
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Jun 1992
Country of Publication:
United States
Language:
English
Subject:
22 NUCLEAR REACTOR TECHNOLOGY; 58 GEOSCIENCES; GROUND MOTION; ACCELERATION; NUCLEAR POWER PLANTS; SEISMIC EFFECTS; DESIGN BASIS ACCIDENTS; TIME MEASUREMENT; CORRELATIONS; RESPONSE FUNCTIONS; MECHANICAL STRUCTURES; SOIL MECHANICS; MATHEMATICAL MODELS; US NRC; EVALUATED DATA; EARTHQUAKE MAGNITUDE

Citation Formats

Salmon, M.W., Short, S.A., and Kennedy, R.P. Strong motion duration and earthquake magnitude relationships. United States: N. p., 1992. Web. doi:10.2172/67453.
Salmon, M.W., Short, S.A., & Kennedy, R.P. Strong motion duration and earthquake magnitude relationships. United States. doi:10.2172/67453.
Salmon, M.W., Short, S.A., and Kennedy, R.P. Mon . "Strong motion duration and earthquake magnitude relationships". United States. doi:10.2172/67453. https://www.osti.gov/servlets/purl/67453.
@article{osti_67453,
title = {Strong motion duration and earthquake magnitude relationships},
author = {Salmon, M.W. and Short, S.A. and Kennedy, R.P.},
abstractNote = {Earthquake duration is the total time of ground shaking from the arrival of seismic waves until the return to ambient conditions. Much of this time is at relatively low shaking levels which have little effect on seismic structural response and on earthquake damage potential. As a result, a parameter termed ``strong motion duration`` has been defined by a number of investigators to be used for the purpose of evaluating seismic response and assessing the potential for structural damage due to earthquakes. This report presents methods for determining strong motion duration and a time history envelope function appropriate for various evaluation purposes, for earthquake magnitude and distance, and for site soil properties. There are numerous definitions of strong motion duration. For most of these definitions, empirical studies have been completed which relate duration to earthquake magnitude and distance and to site soil properties. Each of these definitions recognizes that only the portion of an earthquake record which has sufficiently high acceleration amplitude, energy content, or some other parameters significantly affects seismic response. Studies have been performed which indicate that the portion of an earthquake record in which the power (average rate of energy input) is maximum correlates most closely with potential damage to stiff nuclear power plant structures. Hence, this report will concentrate on energy based strong motion duration definitions.},
doi = {10.2172/67453},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {6}
}