Earthquake Magnitude Estimation Using a Total Noise Enhanced Optimization Model

In this paper, a heterodyne laser interferometer, which is used as a sensor for high-precision displacement measurement, is introduced to measure ground vibration and seismic waves as a seismometer. The seismic wave is measured precisely through the displacement variation obtained by the heterodyne...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2019-03, Vol.19 (6), p.1454
Main Authors: Lee, Kyunghyun, Oh, Jinhwan, Lee, Hyukwoo, You, Kwanho
Format: Article
Language:English
Subjects:
Acceleration
Accuracy
Algorithms
Computer simulation
Displacement measurement
earthquake magnitude
Earthquake prediction
Earthquakes
Fourier transforms
Ground motion
heterodyne laser interferometer
Lasers
magnitude estimation
Optimization models
Palladium
Seismic waves
Seismographs
Sensors
total noise enhanced optimization
Vibration measurement
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Summary:In this paper, a heterodyne laser interferometer, which is used as a sensor for high-precision displacement measurement, is introduced to measure ground vibration and seismic waves as a seismometer. The seismic wave is measured precisely through the displacement variation obtained by the heterodyne laser interferometer. The earthquake magnitude is estimated using only the P-wave magnitudes for the first 3 s through the total noise enhanced optimization (TNEO) model. We use data from southern California to investigate the relationship between peak acceleration amplitude ( P d ) and the earthquake magnitude ( M g ). For precise prediction of the earthquake magnitude using only the P d value, the TNEO model derives the relation equation between P d and the magnitude, considering the noise present in each measured seismic data. The optimal solution is obtained from the TNEO model based objective function. We proved the performance of the proposed method through simulation and experimental results.
ISSN:1424-8220
1424-8220
DOI:10.3390/s19061454