[1]ZHAO Huiqin,YUN Meng,SU Shupeng,et al.Lithospheric Magnetic Field Variation and Pre-seismic Anomaly Characteristics in North China Area from 2015 to 2016[J].Journal of Seismological Research,2017,40(03):368-371.
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Lithospheric Magnetic Field Variation and Pre-seismic Anomaly Characteristics in North China Area from 2015 to 2016
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
40
Number of periods:
2017 03
Page number:
368-371
Column:
流动地磁专栏
Public date:
2017-07-23
- Title:
- Lithospheric Magnetic Field Variation and Pre-seismic Anomaly Characteristics in North China Area from 2015 to 2016
- Keywords:
- North China; geomagnetism vector observation; lithosphere magnetic field; magnetic anomaly characteristics
- CLC:
- P318
- DOI:
- -
- Abstract:
- Using the mobile geomagnetism vectors of 260 observation points in North China from 2015 to 2016,and combing with the M4.0 earthquake in Shangyi,Hebei as well as M4.0 earthquake in Tangshan,we analyzes the accessibly adjacent lithospheric magnetic field variation.The results indicate that the horizontal vector H changed direction near the M4.0 earthquake of Shangyi,and it is on the zero value line of the variation of the magnetic declination D,while the variation of magnetic inclination I and the total intensity F have no evident local anomaly features.The M4.0 earthquake epicenter in Tangshan is located in the horizontal vector H,where a variation of sudden diminution in it's magnitude from south to north; meanwhile,it is on the edge of high gradient zone of magnetic declination D's negative value,and is also located at the junction of positive and negative values of magnetic inclination I's variation.However,the total intensity F has no evident local anomaly features.
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Last Update:
2017-07-20