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沂沭断裂带近期断层形变特征分析
Analysis of Characteristics of Cross-Fault Deformation of YISHU Fault Zone Recently
- DOI:
- 作者:
- 冯志军
Feng Zhijun
- 作者单位:
- 山东省地震局
Seismological Bureau of Shandong Province
- 关键词:
- 山东；沂沭断裂带；垂直形变；水平形变；断层
Shandong, Yishu-fault zone, vertical deformation, level deformation，fault
- 摘要:
- 利用最佳逼近一般多项式曲线拟合和速率合成方法分析了沂沭断裂带近期断层形变特征，结果显示：沂沭断裂带及其北西向断层近期的垂直和水平形变速率均较小，没有明显的速率异常；同一断层具有分段活动特征，且不同时间段的活动速率存在着差异; 同一断层的水平形变速率大于垂直形变速率。
This article analyzed the characteristics of the recent fault deformation of Yishu fault zone with the best approximate general polynomial curve fitting and rate synthesis method. The result shows: The vertical and the horizontal deformation rates of Yishu fault zone and its northwestern fracture were relatively small. There was no obvious abnormal rate.Same fracture had the segmented movement character and there were some differences of the movement rates at different time intervals.For the same facture, the horizontal deformation rate was greater than the vertical deformation rate.
