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首页> 外文期刊>Geofisica internacional >Estimation of source; path and site effects at MASE array stations: a comprehensive study
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Estimation of source; path and site effects at MASE array stations: a comprehensive study

机译：估算来源; MASE阵列站的路径和站点影响：全面研究

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Abstract:A parameterized source and path effects inversion method based on the use of global optimization techniques is presented. We applied this method on velocity data from various seismic events collected between August, 2005 and April, 2007 in Mexico by the regional MesoAmerican Subduction Experiment (MASE) seismic network and other stations from the permanent Mexican Seismological Survey Network (SSN). The source, path and site parameters corresponding to the S wave amplitude spectra of 219 velocity seismic records (162 from MASE and 57 from SSN) were estimated by means of a generalized inversion approach. The simultaneously inverted parameters from the records of 55 stations shows a significant agreement between the observed and calculated spectra, which supports their realiability. Nakamura’s method was used to compute an initial guess for the generalized inversion. Comparisons between Nakamura’s technique and parameterized source and path effects inversion by using simulated annealing method were also established. Finally, a frecuency dependent attenuation relationship for the study area was computed by using a genetic algorithm inversion approach.
机译：摘要：提出了一种基于全局优化技术的参数化源和路径效应反演方法。我们将这种方法应用于2005年8月至2007年4月在墨西哥通过区域中美俯冲实验（MASE）地震网络和来自墨西哥永久地震勘探网络（SSN）的其他站点收集的各种地震事件的速度数据。利用广义反演方法估算了对应于219个速度地震记录的S波振幅谱（来自MASE的162和来自SSN的57）的震源，路径和站点参数。来自55个台站的记录中同时倒置的参数表明，观测到的频谱与计算出的频谱之间存在显着一致性，这支持了它们的可实现性。 Nakamura的方法用于计算广义反演的初始猜测。还建立了中村技术与通过模拟退火方法进行参数化源和路径效应反演的比较。最后，使用遗传算法反演方法计算了研究区域的频率相关衰减关系。

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