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首页> 外文会议>International Conference on Civil Engineering and Transportation >An Improved Magnitude Estimation Method using Combination of Predominant Period and Peak Amplitude for Earthquake Early Warning
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An Improved Magnitude Estimation Method using Combination of Predominant Period and Peak Amplitude for Earthquake Early Warning

机译：一种改进的幅度估计方法，使用主要时段和峰值幅度的组合进行地震预警

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摘要

The critical technology of Earthquake Early Warning (EEW) is determining the size of an earthquake and the predicted ground motion at given site, from the first few seconds of the P wave arrivals. Currently, there were two different approaches to the EEW magnitude estimation, the predominant period method and the peak amplitude method. However, both methods mentioned above had some disadvantages, such as significant uncertainty and saturation at great magnitude. To improve the results of magnitude estimation, a combined method using predominant period τc and peak amplitude of acceleration Pmax was introduced. Compared with the predominant period method and the peak amplitude method, the estimation standard deviation level of the combined method is 0.42 using NSMP strong motion data. The magnitude estimation results of the first three seconds P wave indicate that, the estimation precision of combined method is higher than those of the two methods, the predominant period method and the peak amplitude method, and the saturation at great magnitude is improved.
机译：地震预警（EEW）的临界技术是从P波到来的前几秒钟确定地震和预测地面运动的尺寸。目前，有两种不同的做法EEW幅度估计，卓越周期法和峰值法。然而，上面提到的两种方法具有一些缺点，例如具有大幅度的显着不确定性和饱和度。为了提高幅度估计的结果，介绍了使用主要时段τc和加速度Pmax峰值幅度的组合方法。与主要方法和峰值幅度方法相比，组合方法的估计标准偏差水平使用NSMP强运动数据为0.42。前三秒钟P波的幅度估计结果表明，组合方法的估计精度高于两种方法，主要方法和峰值幅度方法的估计精度，并且提高了大幅度的饱和度。

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