Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/695
DC Field | Value | Language |
---|---|---|
dc.contributor.authorall | Abdel-Fattah, A. K.; National Research Institute of Astronomy and Geophysics,Helwan,Cairo,Egypt | en |
dc.date.accessioned | 2006-02-14T09:29:07Z | en |
dc.date.available | 2006-02-14T09:29:07Z | en |
dc.date.issued | 2002 | en |
dc.identifier.uri | http://hdl.handle.net/2122/695 | en |
dc.description.abstract | The rupture process of a moderate earthquake (M 4.9)on 28th January 1999 was analyzed using velocity records at local distances less than 80 km.The characterization of the rupture process was obtained from studying aftershocks distribution,azimuthal variations of Relative Source Time Functions (RSTFs),and a set of spatio-temporal slip models.RSTFs were retrieved by deconvolution of small aftershock records from those of the mainshock.In addition,velocity P -wave records of the respective event were inverted to recover slip distribution on the fault plane using the records of aftershocks as Empirical Green Functions (EGFs).The waveform inversion was adopted using three EGFs.In the inversion,the rupture propagation velocity was fixed and assumed to be eight-tenths of the local shear wave velocity.The total seismic moment was estimated to range from 0.011 E +18 Nm (Mw =4.6) to 0.017 E +18 Nm (Mw =4.8).The hypocentral distribution of the aftershocks,azimuthal variations of RSTFs, and the set of slip distribution models were exhibited bilateral rupture propagation along the strike and dip of the fault plane.The presence of two to three high slip patches on the fault plane suggested that a complex rupture pattern is detectable for a moderate size earthquake.However,the so-called nucleation phase was invisible in the present analysis. | en |
dc.format.extent | 764292 bytes | en |
dc.format.mimetype | application/pdf | en |
dc.language.iso | English | en |
dc.publisher.name | INGV | en |
dc.relation.ispartof | Annals of Geophysics | en |
dc.relation.ispartofseries | 5/45 (2002) | en |
dc.subject | empirical Green's function | en |
dc.subject | aftershocks distribution | en |
dc.subject | relative source time function | en |
dc.subject | spatio-temporal slip models | en |
dc.title | Source characteristics of a moderate earthquake (M 4.9)using empirical Green s function technique | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.04. Ground motion | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.09. Waves and wave analysis | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | open | en |
dc.contributor.author | Abdel-Fattah, A. K. | en |
dc.contributor.department | National Research Institute of Astronomy and Geophysics,Helwan,Cairo,Egypt | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | National Research Institute of Astronomy and Geophysics,Helwan,Cairo,Egypt | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
Appears in Collections: | Annals of Geophysics |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
575_586 Abdel Fattah.pdf | 746.38 kB | Adobe PDF | View/Open |
Page view(s)
133
checked on Apr 20, 2024
Download(s) 20
292
checked on Apr 20, 2024