Abstract In this work, a one-dimensional (1-D) seismic velocity model is proposed for the central portion of the sub-basin of Chalco, located in the southeast (SE) sector of the basin of Mexico. The seismic model was integrated from spectral analysis of the seismic ambient vibrations (microtremors or seismic noise) records, through the methodologies of Modified Spatial Autocorrelation (MSPAC) and H/V spectral ratios. The one-dimensional (1-D) seismic model is the result of the simultaneous inversion of the H/V ratios and the phase-velocity dispersion curves, corresponding with Rayleigh waves and contained in the vertical component of the microtremor records. The scheme used in the inversion process was Monte Carlo. Which allowed us to establish a best fit model configured by four representative lithological units, congruent with the amplitude and dominant periods identified in this sector of the basin of Mexico.

中文翻译：

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墨西哥查尔科盆地一维地震速度模型

摘要 在这项工作中，为位于墨西哥盆地东南 (SE) 部分的 Chalco 子盆地的中心部分提出了一个一维 (1-D) 地震速度模型。通过修正空间自相关 (MSPAC) 和 H/V 谱比的方法，从地震环境振动（微震或地震噪声）记录的谱分析中整合了地震模型。一维 (1-D) 地震模型是 H/V 比和相速度频散曲线同时反演的结果，对应于瑞利波并包含在微震记录的垂直分量中。反演过程中使用的方案是蒙特卡罗。这使我们能够建立由四个代表性岩性单元配置的最佳拟合模型，