摘要
用多项式拟合方法,分离出观测资料中的高频部分和低频部分,再用最小二乘法求出低频部分的直线方程。用VB编程:①检索出高频信号的超限时间、幅度、次数、超限率等;②计算出低频部分每日偏离直线均值。给定正常变化指标,从而逐项自动诊断,判定是否出现短临异常现象,为震情跟踪提供短临异常的快速识别处理软件。
It is isolated from the high frequency part and low frequency part of the observation data by polyno- mial fitting method, and got the equation of the straight line of the low frequency part. And the results by the VB programming as following： （ 1 ） It can retrieve the high frequency signal of the overrun time, amplitude, frequency, overrun rate, etc. ; （2） It can calculate the low frequency part of the dairy average deviates from tile straight line. Given normal change index, the software can automatic check items and determine the short- term and impending anomalies for earthquake prediction.
出处
《高原地震》
2013年第3期40-44,共5页
Plateau Earthquake Research
关键词
形变资料
短临异常
异常指标
自动检索
Deformation data
Short -impending anomaly
Anomaly index
Automatically retrieve
