[1]FANG Ying,JIANG Zai-sen,GU Guo-hua.Oscillation Analysis of GPS Horizontal Time Series before the Wenchuan Earthquake[J].Journal of Seismological Research,2010,33(02):125-130.
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Oscillation Analysis of GPS Horizontal Time Series before the Wenchuan Earthquake
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
33
Number of periods:
2010 02
Page number:
125-130
Column:
Public date:
2010-02-01
- Title:
- Oscillation Analysis of GPS Horizontal Time Series before the Wenchuan Earthquake
- Keywords:
- GPS; wavelet; Qinghai-Tibet Plateau; Wenchuan earthquake
- CLC:
- P315.72+5
- DOI:
- -
- Abstract:
- The article analyzed multi-time scale characteristics and seasonal changes of horizontal time series of GPS fiducial stations in Mainland China by complex wavelet analysis techniques.The results showed that,from early 2007 to the Wenchuan earthquake,a quasi-synchronous annual cycle abnormal oscillation occurred in north-south components in GPS stations of Tibet Plateau.The northward amplitudes were significantly higher than their accelerations of large-scale trends in north-east movement after the great Sumatra earthquake in Indonesia.The phenomenon was explained as follows.The great Sumatra earthquake in Indonesia might be an important trigger factor leading to the breakdown of Longmenshan locked segments.This cycle of Oscillation before the Wenchuan earthquake concentrated in between 355 days and 375 days(with the earth around the sun very consistent cycle),leading to the reasons for this change is unclear,pending further in-depth study.
- References:
- -
- Similar References:
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Last Update:
2010-02-23