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Article: Spatial bias in b-value of the frequency-magnitude relation for the Hong Kong region

TitleSpatial bias in b-value of the frequency-magnitude relation for the Hong Kong region
Authors
KeywordsB-Value
Frequency-Magnitude Relation
Hong Kong
Issue Date2001
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/jseaes
Citation
Journal Of Asian Earth Sciences, 2001, v. 20 n. 1, p. 73-81 How to Cite?
AbstractThe onshore and offshore regions in South Guangdong around Hong Kong exhibit different b-values of the G-R relation. The two regions have yielded b-values of 0.85 and 0.67, respectively, based on the most complete seismic database for the period 1970-1995. Tests on the completeness of the seismic catalogue and dominance of local source zones suggest a fundamentally complete record for M ≥ 3 events and the spatial bias in the b-values cannot be explained entirely in terms of these two factors. The subcatalogue of onshore events with focal depth ≥ 6 km has yielded an essentially identical b-value as that for the offshore region, thus revealing a weak upper crust with diffused seismicity overlying a relatively strong lower crust. The present study shows that spatial bias in the b-value can be resolved by a proper analysis of the seismic data. The interpretation is also consistent with the model that the relative motion between South China and the South China Sea is diffused over a broad fault zone along the coast, with a higher b-value in the upper crust and the lack of a single wrench fault. © 2001 Elsevier Science Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/151069
ISSN
2015 Impact Factor: 2.647
2015 SCImago Journal Rankings: 1.393
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChan, LSen_US
dc.contributor.authorChandler, AMen_US
dc.date.accessioned2012-06-26T06:16:43Z-
dc.date.available2012-06-26T06:16:43Z-
dc.date.issued2001en_US
dc.identifier.citationJournal Of Asian Earth Sciences, 2001, v. 20 n. 1, p. 73-81en_US
dc.identifier.issn1367-9120en_US
dc.identifier.urihttp://hdl.handle.net/10722/151069-
dc.description.abstractThe onshore and offshore regions in South Guangdong around Hong Kong exhibit different b-values of the G-R relation. The two regions have yielded b-values of 0.85 and 0.67, respectively, based on the most complete seismic database for the period 1970-1995. Tests on the completeness of the seismic catalogue and dominance of local source zones suggest a fundamentally complete record for M ≥ 3 events and the spatial bias in the b-values cannot be explained entirely in terms of these two factors. The subcatalogue of onshore events with focal depth ≥ 6 km has yielded an essentially identical b-value as that for the offshore region, thus revealing a weak upper crust with diffused seismicity overlying a relatively strong lower crust. The present study shows that spatial bias in the b-value can be resolved by a proper analysis of the seismic data. The interpretation is also consistent with the model that the relative motion between South China and the South China Sea is diffused over a broad fault zone along the coast, with a higher b-value in the upper crust and the lack of a single wrench fault. © 2001 Elsevier Science Ltd. All rights reserved.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/jseaesen_US
dc.relation.ispartofJournal of Asian Earth Sciencesen_US
dc.subjectB-Valueen_US
dc.subjectFrequency-Magnitude Relationen_US
dc.subjectHong Kongen_US
dc.titleSpatial bias in b-value of the frequency-magnitude relation for the Hong Kong regionen_US
dc.typeArticleen_US
dc.identifier.emailChan, LS:chanls@hku.hken_US
dc.identifier.authorityChan, LS=rp00665en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/S1367-9120(01)00025-6en_US
dc.identifier.scopuseid_2-s2.0-0035192302en_US
dc.identifier.hkuros66486-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035192302&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume20en_US
dc.identifier.issue1en_US
dc.identifier.spage73en_US
dc.identifier.epage81en_US
dc.identifier.isiWOS:000172354800006-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridChan, LS=7403540528en_US
dc.identifier.scopusauthoridChandler, AM=7102635839en_US

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