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跨断层位移测量,是研究地壳运动、地震孕育及发生的可靠手段。作者利用跨断层流动水准及定点水准资料,研究区域断层位移速率的时空演化过程,进而探讨前兆信息与地震孕育过程的内在联系。本文选用华北地区跨断层流动水准点44处,定点水准点9处;南北地震带北段流动水准点38处及南段川、滇地区流动水准点22处,定点水准点1处;东南沿海地震带流动水准测点14处,定点水准2处(图1)。并结合七个震例,初步探讨了震前断层垂直位移速率的动态演化特征及断层群体速率合成与地震孕育过程的关
Cross-fault displacement measurement is a reliable means of studying the crustal movement, earthquake breeding and occurrence. Using the cross-fault flow and fixed-point data, the authors study the temporal and spatial evolution of regional fault displacement velocity and then explore the intrinsic relationship between precursor information and earthquake breeding process. In this paper, there are 44 cross-fault flow levels in North China, 9 fixed-point levels, 38 flow levels in the northern section of the North-South Seismic Belt and 22 flow-level points in the Sichuan-Yunnan section of the South Section with 1 fixed-point point. The southeast coast earthquake With mobile leveling point 14, fixed-point level 2 (Figure 1). Combined with seven earthquake cases, the dynamic evolution characteristics of the vertical displacement velocity before the earthquake and the relationship between the rate of fault group assemblage and the earthquake breeding process are discussed preliminarily