[1]MA Zhen,SU Weigang.Precursory Anomalies of Fixed Point Deformation before Qinghai Menyuan MS6.4 Earthquake in 2016[J].Journal of Seismological Research,2016,39(增刊):112-116.
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Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
39
Number of periods:
2016 Supplementary
Page number:
112-116
Column:
Public date:
2016-11-20
- Title:
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Precursory Anomalies of Fixed Point Deformation before Qinghai Menyuan MS6.4 Earthquake in 2016
- Author(s):
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MA Zhen; SU Weigang
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Earthquake Administration of Qinghai Province,Xining 810001,Qinghai,China
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- Keywords:
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Menyuan MS6.4 earthquake; tilt; borehole strain; deformation anomalies
- CLC:
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P315.725
- DOI:
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- Abstract:
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Based on the deformation observation data of fixed points in Qinghai area,we analyze the precursor anomalies of digital deformation and the anomalies reliability before Menyuan MS6.4 earthquake on Jan.21,2016. The results showed that there existed medium-short-term anomalies with high reliability in part of tilt and strain observation data in Qinghai area before the earthquake. The precursor anomalies mainly presented broken annual variation and tendency change in 5 months to 1 year before earthquake.