首页 | 本学科首页   官方微博 | 高级检索  
     


Ground Motion Zoning of Santiago de Cuba: An Approach by SH Waves Modelling
Authors:Leonardo Alvarez  Julio García  Franco Vaccari  Giuliano F. Panza  Bertha González  Carmen Reyes  Bárbara Fernández  Ramón Pico  José A. Zapata  Enrique Arango
Affiliation:(1) Centro Nacional de Investigaciones Sismológicas, Cuba (CENAIS);(2) The Abdus Salam International Centre for Theoretical Physics, Italia (ICTP);(3) Istituto Nazionale di Geofisica e Vulcanologia - Osservatorio Vesuviano, Naples, Italy (INGV-OV);(4) Dipartimento di Scienze della Terra, Università di Trieste, Italia (DST);(5) Instituto de Cibernética, Matemática y Física, Cuba (ICIMAF)
Abstract:— The expected ground motion in Santiago de Cuba basin from earthquakes which occurred in the Oriente fault zone is studied. Synthetic SH-waves seismograms have been calculated along four profiles in the basin by the hybrid approach (modal summation for the path source-profile and finite differences for the profile) for a maximum frequency of 1 Hz. The response spectra ratio (RSR) has been determined in 49 sites, distributed along all considered profiles with a spacing of 900 m. The corresponding RSR versus frequency curves have been classified using a logical-combinatorial algorithm. The results of the classification, in combination with the uppermost geological setting (geotechnical information and geological geometry of the subsoil) are used for the seismic zoning of the city. Three different main zones are identified, and a small sector characterized by major resonance effects, due to the particular structural conditions. Each zone is characterized in terms of its expected ground motion parameters for the most probable strong earthquake (MS=7), and for the maximum possible (MS=8).
Keywords:Synthetic seismograms  surface waves  zoning  Santiago de Cuba
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号