%0 Journal Article
%T Microzonation of the Linares, Northeast Mexico area, based on geology and shear-wave velocity measurements
%A J. C. Montalvo-Arrieta
%A Y. Quintanilla
%A A. Tamez
%A M. Meneses
%J Geof¨ªsica internacional
%D 2005
%I Universidad Nacional Aut¨®noma de M¨¦xico
%X We determined the velocity structure of S-wave (VS), P-wave (VP) and the average shear velocity to 30 meters depth (Vs30) at 30 locations in the Linares, Nuevo Le¨®n area. VS and VP measurements were made from seismic refraction profiles. Four different lithologic units were defined in the upper 30 m: silts with 338 m/s and 221 m/s for VP and VS respectively, which correspond to the lowest velocities measured in the area; Quaternary deposits with 957 m/s and 559 m/s for VP and VS; Tertiary conglomerates with 2471 m/s and 1220 m/s for VP and VS; and shales of the Upper Cretaceous Mendez Formation with 3195 m/s and 2149 m/s for VP and VS. Sites of class C (Vs30 < 760 m/s) are dominant in the area, corresponding to maximum thicknesses of less than 16 m of soft sediments.
%K Borehole data
%K travel time curves
%K seismic velocity structure
%K seismicity
%K site effects
%K seismic refraction profiles
%U http://www.geofisica.unam.mx/unid_apoyo/editorial/publicaciones/investigacion/geofisica_internacional/anteriores/2005/04/Montalvo.pdf