太行山山前断裂带倾斜潮汐因子动态组合分析  

Analysis of Dynamic Combination in Piedmont Fault Zone of Taihang Mountain

作　　者：张肖[1] 佘雅文[2] 齐玉妍[2] 云萌[1] ZHANG Xiao;SHE Yawen;QI Yuyan;YUN Meng(Xiong’an Earthquake Disaster Prevention Center,Hebei Earthquake Agency,1 Aowei Road,Xiong’an New Area 071700,China;Mobile Survey Team of Hebei Earthquake Agency,206 Mid-Tianwei Road,Baoding 071030,China)

机构地区：[1]河北省地震局雄安新区震灾预防中心,雄安新区071700 [2]河北省地震局流动测量队,保定市071030

出　　处：《大地测量与地球动力学》2019年第10期1017-1021,共5页Journal of Geodesy and Geodynamics

基　　金：河北省地震局地震科技星火计划(DZ20160407039,DZ20170510054)~~

摘　　要：利用Venedikov调和分析方法计算太行山山前断裂带地倾斜观测台站2002~2017年EW和NS分量的固体潮潮汐因子,获取潮汐因子异常与动态组合的3种特征量(扩容膨胀、剪切应变、介质的各向异性)时间序列,并分析其与太行山山前断裂带附近中等地震的关系。结果表明:1)断裂带上地倾斜潮汐因子受海潮负荷影响较小,潮汐因子并未因纬度的改变而表现出明显的规律性变化,其差异可能是因为受地壳横向不均匀变化的影响;2)地倾斜固体潮潮汐因子动态组合特征量与观测站点周边350 km范围内发生的M L4.0以上地震有较好的对应关系。We use the Venedikov harmonic analysis method to calculate the tidal factor of solid tide of the EW and NS components of the ground tilting observatory station on the Taihang mountain piedmont fault zone from 2002 to 2017.Further,the time series of three characteristic quantities(expansion,shear strain,anisotropy of the medium)of the tidal factorΔγanomaly and dynamic combination are obtained.The relationship between the three dynamic combination features and the moderate earthquake near the Taihang mountain piedmont fault zone is analyzed.The results show:1)Tilting factors are less affected by the ocean tide load,and do not show obvious regular changes caused by the change of latitude.The variation of tidal factors may be affected by the change of lateral inhomogeneity of the crust.2)The dynamic combination feature of the tidal factor has a good correspondence with the M L4.0 earthquakes in the range of 350 km around the observation stations.

关 键 词：太行山山前断裂带 地倾斜 潮汐因子 地震 

分 类 号：P315[天文地球—地震学]