滑动 AR 谱分析与地震信息处理

MOVING AR SPECTRUM ANALYSIS AND EARTHQUAKE INFORMATION PROCESSING

摘要: 用滑动 AR 谱分析方法对唐山地震前后的张道口短水准资料进行了分析.AR 谱分析参数在唐山地震期间出现异常变化.自1975年1月至1977年1月左右,出现了 T=30天左右的周期,AR 模型拟合最佳阶 Pop6,相应的 FPE 值为高值.

Abstract: The short-base levelling data at Zhangdaou is analysed by the moving AR spectrum analysis. There are some anomalous changes of AR spectrum parameters during the Tangshan earthquake. The period is about T = 30 days appearing from January 1975 till January 1977, meanwhile the optimum order of AR model fitting Pop6, the corresponding FPE value is high.