[1]SUN Qikai,HE Qinglong,LI Layue.Evolution Characteristics of the Crust Vertical Deformation and the Faults Activity Analysis in the Northern Area of North China[J].Journal of Seismological Research,2018,41(03):438-445.
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Evolution Characteristics of the Crust Vertical Deformation and the Faults Activity Analysis in the Northern Area of North China
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
41
Number of periods:
2018 03
Page number:
438-445
Column:
Public date:
2018-08-20
- Title:
- Evolution Characteristics of the Crust Vertical Deformation and the Faults Activity Analysis in the Northern Area of North China
- Keywords:
- vertical deformation; fault activity; high gradient; seismic activity; in the northern area of North China
- CLC:
- P315.725
- DOI:
- -
- Abstract:
- Based on the repeated measurement data and cross-fault data in the northern area of North China,we calculate the vertical strain rate during 1985-2015 for several periods.The results reflect deformation characteristics and seismicity by contour line and gradient of vertical deformation.Combining the observation data of cross-fault deformation,the activity of the main faults in the region is analyzed.Then we identify the overall trend of deformation,and to require critical attention in the region and areas.The results show that the northern part of North China is dominated by the succession movement,at the same time the west of the Taihang Mountain front tectonic zone is generally raising,and the North China plain subsidence and the Yanshan block is steady.The overall activity of the western section of the Zhangjiakou-Bohai tectonic belt is low,and the main faults in the middle northern section of the Shanxi fault depression zone mainly present as normal fault activity.The interlaced area of the two fault phase is a high gradient concentrated area with high vertical deformation and the frequency of moderate strong earthquakes is high,and these areas need sustained and focused attention in the future.
- References:
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Last Update:
2018-07-20