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Article: Near-surface Attenuation Modelling based on Rock Shear-Wave Velocity Profile

TitleNear-surface Attenuation Modelling based on Rock Shear-Wave Velocity Profile
Authors
KeywordsUpper-crust
Near-surface attenuation
Shear wave velocity
Kappa
Issue Date2006
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/soildyn
Citation
Soil Dynamics and Earthquake Engineering, 2006, v. 26 n. 11, p. 1004-1014 How to Cite?
AbstractIn a previous study published in this journal, the authors developed a comprehensive methodology for modelling the shear wave velocity profile in crustal rock, for purposes of seismic hazard assessment. The derived shear wave velocity profile was used to estimate the amplification and attenuation mechanisms in the transmission of seismic waves. The ability to conduct seismic hazard assessments in regions of low and moderate seismicity is greatly enhanced by this new modelling approach, given that developing a local attenuation model based on curve-fitting strong motion data is generally not feasible under such conditions. This paper reports a follow-up study conducted to evaluate the significance of near-surface attenuation in bedrock (as distinct from attenuation in unconsolidated soft soil sediments). The κ parameter is used to characterize the extent of this attenuation mechanism. Empirical correlations of κ with two forms of near-surface shear wave velocity parameter in crustal rock have been developed, employing information obtained from global sources in conjunction with that from local studies. The resulting development of two simple equations to predict median values of κ as functions of readily available shear wave velocity parameters represents the key outcome of this study. Applications of the proposed empirical approaches to determine κ have been provided, taking Hong Kong and Melbourne as case studies to illustrate different aspects of the proposed methodology. Consistency between the results obtained by the two recommended approaches has thereby been demonstrated.
Persistent Identifierhttp://hdl.handle.net/10722/54267
ISSN
2015 Impact Factor: 1.481
2015 SCImago Journal Rankings: 1.516
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChandler, AMen_HK
dc.contributor.authorLam, NTKen_HK
dc.contributor.authorTsang, HHen_HK
dc.date.accessioned2009-04-03T07:41:36Z-
dc.date.available2009-04-03T07:41:36Z-
dc.date.issued2006en_HK
dc.identifier.citationSoil Dynamics and Earthquake Engineering, 2006, v. 26 n. 11, p. 1004-1014en_HK
dc.identifier.issn0267-7261en_HK
dc.identifier.urihttp://hdl.handle.net/10722/54267-
dc.description.abstractIn a previous study published in this journal, the authors developed a comprehensive methodology for modelling the shear wave velocity profile in crustal rock, for purposes of seismic hazard assessment. The derived shear wave velocity profile was used to estimate the amplification and attenuation mechanisms in the transmission of seismic waves. The ability to conduct seismic hazard assessments in regions of low and moderate seismicity is greatly enhanced by this new modelling approach, given that developing a local attenuation model based on curve-fitting strong motion data is generally not feasible under such conditions. This paper reports a follow-up study conducted to evaluate the significance of near-surface attenuation in bedrock (as distinct from attenuation in unconsolidated soft soil sediments). The κ parameter is used to characterize the extent of this attenuation mechanism. Empirical correlations of κ with two forms of near-surface shear wave velocity parameter in crustal rock have been developed, employing information obtained from global sources in conjunction with that from local studies. The resulting development of two simple equations to predict median values of κ as functions of readily available shear wave velocity parameters represents the key outcome of this study. Applications of the proposed empirical approaches to determine κ have been provided, taking Hong Kong and Melbourne as case studies to illustrate different aspects of the proposed methodology. Consistency between the results obtained by the two recommended approaches has thereby been demonstrated.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/soildynen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectUpper-crusten_HK
dc.subjectNear-surface attenuationen_HK
dc.subjectShear wave velocityen_HK
dc.subjectKappaen_HK
dc.titleNear-surface Attenuation Modelling based on Rock Shear-Wave Velocity Profileen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0267-7261&volume=26&issue=11&spage=1004&epage=1014&date=2006&atitle=Near-surface+Attenuation+Modelling+based+on+Rock+Shear-Wave+Velocity+Profileen_HK
dc.identifier.emailTsang, HH: h.h.tsang@graduate.hku.hken_HK
dc.description.naturepostprinten_HK
dc.identifier.doi10.1016/j.soildyn.2006.02.010en_HK
dc.identifier.scopuseid_2-s2.0-33746800298-
dc.identifier.hkuros137843-
dc.identifier.isiWOS:000241235900003-

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