中国大陆7级以上地震前能量对数迁移参量“V值”变化特征

THE VARIATION FEATURES OF ENERGY LOGARITHM MIGRATION PARAMETER V VALUE BEFORE M≥7 EARTHQUAKES IN CHINA

摘要:

提出了一个与地震时空分布图象有关的特征量——能量对数迁移参量"V值".通过对V值的时空扫描,发现在中国大陆地区7级以上地震前V值随时间呈现正常波动趋势下降至最低点趋势回升的过程,地震发生在V值回升过程中或回升以后.有8次强震发生在最低值结束后的2年之内,占总数(11次)的72.7%.

Abstract:

A new characteristic quantity-energy logarithm migrating parameter V value which relates time-space seismicity patterns is put forward.On the basis of time-space scanning results,V value shows an abnormal process which is normal fluctuation-tendency going down-the lowest value-tendency going up-earthquake occurring with time.Earthquakes occur during or after V value-tendency going up.Eight strong earthquakes which form 72.7 percent in total events took place during 1~24 months after the lowest V value ending.