摘要
本文根据灰色系统中的聚类原理,提出了有关复测网区内地壳活动区的灰色划分方法,即根据动态平差得到的观测值速率和关联度这两个灰类指标,对观测值按不同的灰类进行灰色聚类,从而划分地壳的相对活动区。文中给出了重力网重复观测值的灰色关联度、聚类权以及灰类白化函数的计算方法,并用一个复测重力网资料进行了计算,结果表明:用该方法所划出的相对活动区与实际情况比较符合。
According to the conception of grey cluster, this paper gives a grey divisional method of the crustal relative active area in which the repeated observation occurred. Based on the grey relatively de grees and the dynamic rates of the observations, the grey cluster for each observation can be worked out. So that the relatively active area can be obtained in the way of finding the grey classification that a observation belongs to. As an example, the formulations for calculating the grey relative degree, weight and the whitened function of grey classifications of the repeated gravity abservations are given. The method is tested by a repeated gravity network. The results indicate that the relatively active area divided by this method are corresponded to the fact.
出处
《地壳形变与地震》
CSCD
1993年第1期99-105,共7页
Crustal Deformation and Earthquake
关键词
地壳
活动区
地震
观测
灰色聚类
relatively active area
grey cluster
whitened function
