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- W2374317043 abstract "We first studied Earth′s free torsional oscillation using observed data of JCZ-1 seismometer.JCZ-1 seismometer at the Wuhan Observation Station has observed the Earth′s free oscillations excited by the great 2011 Japan earthquake,the great 2010 Chile earthquake and the great 2005 Indonesia earthquake,we detected the eigen periods of basic and first mode: 0 T2~0 T67 and 1 T2~1 T50,and error ratio is less than 0.5% by comparing with the PREM theoretical eigenvalues.We also complemented some modes: 0 T11,0 T15,0 T19,1 T4,1 T5,1 T14,which are not mentioned in PREM,and observed the multi-peak phenomenon of 0 T2,0 T6,0 T7 和0 T8.The results show that JCZ-1 seismometer can precisely observe ultralow frequency and long period free oscillations of the Earth." @default.
- W2374317043 created "2016-06-24" @default.
- W2374317043 creator A5087603987 @default.
- W2374317043 date "2012-01-01" @default.
- W2374317043 modified "2023-10-18" @default.
- W2374317043 title "Free Torsional Oscillations of the Earth Observed by the JCZ-1 Seismometer" @default.
- W2374317043 hasPublicationYear "2012" @default.
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