Seismic intensity for inslab earthquakes in the southeast of the Mexican Volcanic Belt

L. F. Pérez-Moreno, J. Horta-Rangel, Carlos A. Rivas-Nieto, Stephanie Velázquez-Aguilar, I. F. Arjona-Catzim
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Abstract

In this paper the seismic intensity of 5 inslab earthquakes with magnitude 6.0 ≤ Mw ≤ 7.3 and epicenter in the southeast of the Mexican Volcanic Belt is analyzed in terms of spatial distribution of the peak ground acceleration recorded by seismological stations located in Mexico. Based on the available instrumental data, intensity maps were generated using a Kriging interpolation and site effects for some seismological stations were estimated by a Horizontal-to-Vertical Spectral Ratio analysis. Results show the crucial role that distribution of seismic instrumentation and site characteristics have in the determination of expected ground motion and reflect the importance of having an appropriate instrumentation coverage to improve seismic engineering analyses.
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墨西哥火山带东南部板内地震的地震烈度
本文根据墨西哥地震台记录的地面加速度峰值空间分布,分析了墨西哥火山带东南部5次震级为6.0≤Mw≤7.3的地震烈度。在现有仪器资料的基础上,利用Kriging插值生成了强度图,并利用水平-垂直谱比分析估算了一些地震台站的场点效应。结果表明,地震仪器的分布和场地特征在确定预期的地面运动中起着至关重要的作用,并反映了适当的仪器覆盖范围对提高地震工程分析的重要性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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