滦县地区微震震源参数的研究  

A STUDY ON THE SOURCE PARAMETERS OF MICROEARTHQUAKES IN LUANXIAN REGION

作　　者：樊计昌[1] 李松林[1] 

机构地区：[1]国家地震局地球物理勘探大队

出　　处：《华北地震科学》1990年第1期19-29,共11页North China Earthquake Sciences

摘　　要：利用频谱分析方法处理了我大队在唐山地震区取得的高精度的数字地震记录资料。求得了该地区1.5～3.9级地震的等效圆位错震源半径、地震矩、应力降等震源参数。震源半径的取值范围为0.07～0.21公里。地震应力降随震级的不同有较大的变化,其取值范围为几十万帕到一千多万帕。The high-precision digital seismic data for the Tangshan earthquake region were processed by the spectrum method. We have obtained the source parameters (including equivalent circular dislocation radii, seismic moments, stress drops and so on)for those earthquakes with magnitudes from 1.5 to 3.9 in this area. The values of source radii range from 0.07 to 0 21Km. The seismic stress drops vary with magnitude strongly, which are from several hundred thousand Pa to more than ten million Pa.

关 键 词：震源参数 震级 微震 

分 类 号：P315.1[天文地球—地震学]