[1]PENG Guanling,ZHAO Xiaoyan,LIU Zifeng,et al.Temporal and Spatial Characteristics of Apparent Stress before Yunnan Tonghai MS5.0 Earthquake in 2018[J].Journal of Seismological Research,2018,41(04):487-493.
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Temporal and Spatial Characteristics of Apparent Stress before Yunnan Tonghai MS5.0 Earthquake in 2018
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
41
Number of periods:
2018 04
Page number:
487-493
Column:
Public date:
2018-10-20
- Title:
- Temporal and Spatial Characteristics of Apparent Stress before Yunnan Tonghai MS5.0 Earthquake in 2018
- CLC:
- P315.727
- DOI:
- -
- Abstract:
- Based on data of the Yunnan Digital Seismic Network,we calculated the focal parameters of 3.0≤ML<5.0 earthquakes within a 100 km radius of the epicenter from Jan.1,2008 to Aug.13,2018,and obtained several scaling law among the parameters.In order to deduct the effect of magnitude on apparent stress,we obtain the image of temporal process and spatial distribution by using the normalized apparent stress.The results show that the Pearson correlation coefficients between apparent stress and magnitude and seismic moment are 0.63 and 0.37,respectively,which may indicate that the correlation between apparent stress and seismic moment is not significant,and the characteristics of apparent stress scale rate conform to regional tectonic characteristics.During the 15.6 months before the Tonghai MS5.0 earthquake on Aug.13,2018,both of the apparent stress and normalized apparent stress appeared high value anomalies.The high value anomaly area appeared 46 km away from the epicenter,which indicated that the high apparent stress value in this area showed certain indication significance for the occurrence of M≥5.0 earthquakes.
- References:
- -
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Last Update:
2018-10-30