作用于南海北部地壳岩体的外场力  

THE EXTERNAL FIELD STRESS ACTED ON ROCK MASS OF EARTH CRUST IN THE NORTH OF SOUTH CHINA SEA

作　　者：颜玉定[1] 王振才[1] 

机构地区：[1]广东省地震局,广州510070

出　　处：《华南地震》1998年第3期64-67,共4页South China Journal of Seismology

基　　金：地震科学联合基金资助课题(197097)

摘　　要：用光弹等色线与地震震中密集程度对照法,得到本研究区等效外场力的主要特点为:(1)非匀布荷载;(2)方向大致为:东—中部在N13～79°之间;西北部为SN向;西部在N51～78°之间;西南部在N25～69°E之间。According to the method comparing photoelastic fringe pattern with intensive level of epicenter, the characteristic of the equivalent external field stress in our research region is as follows:(1) load is non - uniform;(2) the directions are about N13-79°W in the east and central section, SN in the northwest, N51-78°E in the east, N25-69°E in the southeast.

关 键 词：光弹性实验 外场力 地壳岩体 地震预报 

分 类 号：P315.7[天文地球—地震学] P553[天文地球—固体地球物理学]