Crustal structure of south-central Mexico estimated from the inversion of surface-wave dispersion curves using genetic and simulated annealing algorithms

نویسندگان

  • A. Iglesias
  • V. M. Cruz-Atienza
  • N. M. Shapiro
  • S. K. Singh
  • J. F. Pacheco
چکیده

RESUMEN A partir de catorce sismos de subducción, agrupados en dos trayectorias (una perpendicular y otra paralela a la línea de costa), se calculó un apilado sobre las curvas de dispersión de velocidad de grupo. Estas curvas promedio fueron invertidas usando, por separado, los métodos de algoritmos genéticos y recristalización simulada. Los resultados muestran fuertes diferencias entre ambos modelos corticales, sobre todo, en los parámetros de la capa más somera y en la localización del Moho. Estas diferencias pueden ser explicadas debido a que la primera trayectoria atraviesa el terreno tectonoestratigráfico “Guerrero” y la segunda el “Oaxaca”. La inversión con algoritmos genéticos (GA) probó ser considerablemente más rápida que aquélla con recristalización simulada (SA). Por otro lado SA requiere una pequeña cantidad de memoria y alcanza un desajuste menor que G.A.

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تاریخ انتشار 2001