摘要
本文主要从宏观角度讨论了川滇地区地震滑坡的空间分布格局与环境条件的关系。地震滑坡灾害在空间上可分为四种不同程度的地区。地震滑坡不但受到地震强度、频度的控制,而且与各震区所处的环境条件密切相关。川滇地区的滑坡生成环境可分成三类。在这些环境因素的制约下,形成了自北而南地震滑坡灾害逐渐递降的发育趋势。从时间分布的讨论中可见,川滇地震滑坡自1870—1976年的百年内为高潮期。
In this paper, from a macroscopic point the relationship between the spatial distribution and environmental condition of seismic landslide in Sichuan and Yunnan is discussed. Spatially, 4 regions with different degree landslide disasters are confined. The seismic landslides are not only controlled by earthquake size and frequency, but also related closely to the environmental conditions in each seismic area. There arc three kinds of controlled environments in Sichuan and Yunnan, under which the landslide hazard is decreasing gradually from north to south. From the temporal distribution it is seen that the time span from 1870 to 1976 would be the hightide of seismic landslide in Sichuan and Yunnan.
出处
《地震研究》
CSCD
北大核心
1992年第4期411-417,共7页
Journal of Seismological Research
关键词
川滇地区
地震
滑坡
分布规律
Seismic landslide
Distributive regulation
Spatial distribution, Controlled environment
Sichuan and Yunnan Area
