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dc.contributor.authorallBounif, M. ou A.; CRAAG and USTHB, Institut des Sciences de la Terre, Alger, Algérieen
dc.contributor.authorallDorbath, C.; ORSTOM, Paris, Franceen
dc.description.abstractLocal earthquake travel-time data were inverted to obtain a three dimensional tomographic image of the region centered on the 1985 Constantine earthquake. The resulting velocity model was then used to relocate the events. The tomographic data set consisted of P and S waves travel-times from 653 carefully selected aftershocks of this moderate size earthquake, recorded at 10 temporary stations. A three-dimensional P-wave velocity image to a depth of 12 km was obtained by Thurber's method. At shallower depth, the velocity contrasts reflected the differences in tectonic units. Velocities lower than 4 km/s corresponded to recent deposits, velocities higher than 5 km/s to the Constantine Neritic and the Tellian nappes. The relocation of the aftershocks indicates that most of the seismicity occured where the velocity exceeded 5.5 km/s. The aftershock distribution accurately defined the three segments involved in the main shock and led to a better understanding of the rupture process.en
dc.format.extent3788704 bytesen
dc.relation.ispartofseries1/41 (1998)en
dc.subjectlocal earthquake tomographyen
dc.subjectaftershock studyen
dc.subjectTellian Atlasen
dc.titleThree dimensional velocity structure and relocated aftershocks for the 1985 Constantine, Algeria (MS = 5.9) earthquakeen
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropyen
dc.description.journalTypeJCR Journalen
dc.contributor.authorBounif, M. ou A.en
dc.contributor.authorDorbath, C.en
dc.contributor.departmentCRAAG and USTHB, Institut des Sciences de la Terre, Alger, Algérieen
dc.contributor.departmentORSTOM, Paris, Franceen
item.fulltextWith Fulltext-
crisitem.classification.parent04. Solid Earth-, Département ESS, Bouzaréah, Algiers, Algeria-è de Strasburg, IPGS-EOST-
Appears in Collections:Annals of Geophysics
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