[1]LI Yong-zhen.Using the Primary Component Analysis Earthquake Parameters Reduction[J].Journal of Seismological Research,2010,33(02):164-169.
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Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
33
Number of periods:
2010 02
Page number:
164-169
Column:
Public date:
2010-02-01
- Title:
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Using the Primary Component Analysis Earthquake Parameters Reduction
- Author(s):
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LI Yong-zhen
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(Earthquake Administration of Liaoning Province,Shenyang 110034,Liaoning,China)Abstract
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- Keywords:
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primary component analysis method; relativity; eigenvector; contribution rate
- CLC:
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P315.7
- DOI:
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- Abstract:
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Abstract:the primary component analysis is made using 6 seismicity parameters of earthquake frequency N(ML≥3.0),b,η,A(b),Mf,Ac,which had relation to the earthquake strenth,it was achieved to reduce the above-metioned parameters effectively.There were some relativities among the 6 parameters and each one was different in distinct stages,but the earthquake intensity synthetic index W can be gained by the primary component analysis.W value showed obvious anomalies before 14 shadow earthquakes occurred in the Northeast China area and returned to normal after that.It showed that the synthetic index W can reflect the anomalous characteristics of the seismicity.