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New magnitude proxy for earthquake early warning based on initial time series and frequency
  • +2
  • Yanwei Wang,
  • Xiaojun LI,
  • Zifa Wang,
  • Li Li,
  • Jingyan lan
Yanwei Wang
Guilin University of Technology
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Xiaojun LI
Institute of Geophysics, CEA
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Zifa Wang
Institute of Engineering Mechanics, China Earthquake Administration

Corresponding Author:zifa@iem.ac.cn

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Li Li
Guilin University of Technology
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Jingyan lan
Guilin University of Technology
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A new characteristic parameter max or peak displacement Pd. The comparison results show that for magnitude between 4.0-7.3, S has better correlation with magnitude and higher estimate accuracy than either τpmax or Pd. Hypocentral distance is not required when using S, but it can be used to further improve the accuracy of magnitude estimate. These results confirm that S can significantly improve the accuracy and timeliness of continuous magnitude estimation in an EEW system.
01 Jan 2022Published in Seismological Research Letters volume 93 issue 1 on pages 216-225. 10.1785/0220210106