Morishita播散指数在滑坡时空分布特征研究中的应用  

APPLICATION OF MORISHITA SPREAD INDEX TO THE STUDY OF THE TIME AND SPATIAL DISTRIBUTION CHARACTERISTICS OF LANDSLIDES

作　　者：罗文强[1] 晏同珍[1] 龚珏[1] 

机构地区：[1]中国地质大学,武汉430074

出　　处：《地质科技情报》1996年第2期95-98,共4页Geological Science and Technology Information

摘　　要：介绍了Morishita播散指数I_δ的原理和方法及在滑坡时空分布中的应用。以陕南、陇南地区为例,计算了该区大干10~5m^3不稳定滑坡I_δ(1)和I_δ(t)值。表明该区滑坡的空间形态呈非随机的丛集分布,曲线的"峰"和"谷"为滑坡的多发年份。In this paper,the principle and application of Morishita spread index I_δ to the time and spatial distribution of landslides are introduced. As an example,the values I_δ(l) and I_δ (t) of more than 10~5m^3 instability landslides in south Shanxi Province and Ganshu Province are calculated. The results show that the spatial distribution pattern of landslides in this region features instochastic cluster distribution. The 'peak' and 'valley' of the curve I_δ(t) point to the years when landslides occurred frequently.

关 键 词：Morishita播散指数 滑坡 时空分布 丛集性 

分 类 号：P642.22[天文地球—工程地质学]