【摘要】 运用小波变换方法分析了跨断层形变观测资料不同尺度的小波变换的细节信号变化特征。研究结果表明:1)不同尺度小波变换分解的细节信号显示出不同的时变特征。当尺度为1时,日均值的细节信号主要为噪声;尺度为2、4时,日均值细节信号主要为非平稳信号;尺度为5、6时,细节信号主要为平稳周期信号;2)每月观测一次和每4月观测一次的跨断层形变资料在尺度为3时的细节信号有较好的年周期特征;3)关中地区垂直形变小波处理结果与测点附近200 km左右范围内的中强地震有较好的对应关系,口镇—关山断裂2005年最新资料显示异常,应给予关注。更多还原

【Abstract】 The signal features of wavelet change of different scaling vectors of cross-fault deformation are analyzed,using wavelet transformation.The results are: 1) the detail signals of different wavelet transformation show different time varying features.When the scaling vector is 1,the detail signal is noise;when the scaling vector is 2 or 4,the signal is unstable;when 5 or 6,it is stable periodic signal;2) the monthly and quadra monthly deformation data show good annual periodic features when the scaling vector is 3;3) the wavelet results of vertical deformation in Guanzhong area correspond with medium and strong earthquakes in 200km distances.The 2005 data of Kouzhen-Guanshan show anomaly and deserve people’s concern.更多还原