首页 | 本学科首页   官方微博 | 高级检索  
     

唐山地震引起北京地区烈度异常区的原因分析
引用本文:高振寰. 唐山地震引起北京地区烈度异常区的原因分析[J]. 地震地质, 1979, 1(2): 74
作者姓名:高振寰
摘    要:唐山地震导致北京地区出现烈度异常区的主要地质因素是砂土液化、断层和潜山。砂土液化分布于地势低洼、新近沉积的饱和砂层地区,并位于地下水埋藏浅和迳流滞缓地区。断层控制异常区呈带状分布。潜山的影响主要在于其形态引起的地震动“放大”作用。几次地震对某些地区的影响,常重复出现烈度异常,反映在该地区具有长期起作用的地质因素

关 键 词:烈度异常  唐山地震  异常带  夏垫断裂  北京地区  异常区  喷水冒砂  西集一郎府  古河道  砂土液化

ON DISTRIBUTION OF INTENSITY ANOMALIES IN THE BEIJING REGION CAUSED BY THE TANGSHAN EARTHQUAKE
Abstract:This paper deals with the geological factors affecting the distribution of seismic intensity in the Beijing region during the Tangshan earthquake. It is suggested that the geological factors leading to the intensity anomalies in the Beijing region include mainly liquefaction of sandy soil, faults and buried hills. As the liquefaction of saturated sandy soil caused by the earthquake is related with the permeability of groundwater, earthquakes tend to build up easily the pressure in the region wit
Keywords:
本文献已被 CNKI 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号