Improvement of the Present Earthquake Early Warning System for Japanese Railways

Shunwku YAMAMOTO; Naoyasu IWATA; Hiroyuki MYAKOSHI; Seiji TSUNO

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Improvement of the Present Earthquake Early Warning System for Japanese Railways

机译：日本铁路现行地震预警系统的改进

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The present earthquake early warning system for Japanese highspeed railways has functions of a S-wave warning that is issued by the threshold excess of a seismic acceleration and a P-wave warning that is issued by analyzing the P-wave initial phase, so as to stop trains as soon as possible during earthquakes. Though the system has been worked well for the recent large earthquakes, further enhancement of its performance is expected for higher safety. Here we proposed upgraded P-wave warning algorithms and an effective usage of ocean bottom seismometers which are installed by public organizations, in order to improve accuracy and rapidity of the system.

机译：当前的日本高速铁路地震预警系统具有通过地震加速度的阈值超出而发出的S波警告和通过分析P波初始相位而发出的P波警告的功能，从而在地震中尽快停止火车。尽管该系统在最近的大地震中运行良好，但仍有望进一步提高性能以提高安全性。在这里，我们提出了升级的P波警告算法，并有效利用了公共组织安装的海底地震仪，以提高系统的准确性和速度。

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《Japanese railway engineering》 |2015年第4期|1-4|共4页
作者
Shunwku YAMAMOTO; Naoyasu IWATA; Hiroyuki MYAKOSHI; Seiji TSUNO;
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作者单位

Seismic Data Analysis Center for Railway Earthquake Engineering Research Railway Technical Research Institute;

Seismic Data Analysis Center for Railway Earthquake Engineering Research Railway Technical Research Institute;

Disaster Prevention Research Laboratory Research and Development Center of JR East Group East Japan Railway Company;

Seismic Data Analysis Center for Railway Earthquake Engineering Research Railway Technical Research Institute;

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Improvement of the Present Earthquake Early Warning System for Japanese Railways

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