[1]ZHANG Xi,FANG Wei,QIN Shanlan.Characteristics of Crustal Deformation Anomalies before the Hutubi MS6.2 and Jinghe MS6.6 Earthquakes[J].Journal of Seismological Research,2020,43(02):253-261.
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Characteristics of Crustal Deformation Anomalies before the Hutubi MS6.2 and Jinghe MS6.6 Earthquakes
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
43
Number of periods:
2020 02
Page number:
253-261
Column:
Public date:
2020-06-10
- Title:
- Characteristics of Crustal Deformation Anomalies before the Hutubi MS6.2 and Jinghe MS6.6 Earthquakes
- Keywords:
- North Tianshan area; the Hutubi earthquake; the Jinghe earquake; GPS; index of cross-fault deformation; grey relativity index
- CLC:
- P315.72
- DOI:
- -
- Abstract:
- Using the observational data of mobile cross-fault leveling during 2012-2018,the trend accumulation rate and grey relativity index of fault deformation in North Tianshan area are extracted for the first time.Combined with the GPS velocity field result during 2009-2017,the characteristics of crustal deformation anomalies before the Hutubi MS6.2 and Jinghe MS6.6 earthquakes are comprehensively analyzed.The results show that:(1)The Hutubi earthquake was located at the edge of the highest value area of GPS compressive variation; observational lines with larger trend accumulation of fault deformation were relatively concentrated near the seismic area.The Jinghe earthquake was located in the higher compressive strain area and the enhancing area,there were also high thrust trend accumulation background abnormities such as Bayingou and Yining near the seismic area.(2)Among these two earthquakes,the Jinghe earthquake with larger magnitude had relatively obvious medium-short-term and short-term “thrust accelerating” anomalies in the range of 200 km,300 km and 500 km from the epicenter; and the nearer to the epicenter,the greater the anomaly amplitude.
- References:
- -
- Similar References:
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Last Update:
2020-06-10