摘要
根据强约束匀阻化椭圆形震源简化模型及震源参数计算原理,建立了一种由构造、介质、物理环境和驱动背景等条件估计地震能量和地震效率的构造物理方法,并针对我国28例6级以上地震进行了初步的验算。其结果表明:地震效率η为0.008～0.050;由本方法所得地震能量推算的震级,与各震例原定震级相比较,78.6％的震例震级偏差不超出±0.5级。
A tectonophysical method for estimating seismic energy and efficiency from the data on tectonic features, geological media, physical environment and driving background is established on the basis of a simplified elliptical hypocenter model, which considers strong constraint from hypocentral surroundings and uniformization of sliding resistance, and the calculation of hypocentral parameters. The method is examined by means of calculations of data of 28 strong earthquakes with magnitudes greater than 6.0. The results show that the seismic efficiencies, η, ranges from 0.008 to 0.050 and deviation of the estimated magnitudes from those determined previously by conventional seismological methods is within ±0.5 for 78.6% of the earthquakes examined.
出处
《地震地质》
EI
CSCD
北大核心
1992年第4期325-332,共8页
Seismology and Geology
基金
地震科学联合基金(87134)
关键词
地震
能量
效率
震级
构造物理
Seismic efficiency, Seismic energy, earthquake magnitude, Tectonophysics
