确定裂陷盆地伸展量的分数维法

FRACTAL METHOD FOR ESTIMATING EXTENSION AMOUNT OF FAULT BASIN

脆性断层群落的位移具有分数维特征，此特征可以用于建立一种裂陷盆地伸展量估算的新方法，即分数维法。这种方法可以用于确定在地震反射剖面上不可测定的小型断层之上滑移造成的伸展量大小，计算结果可以弥合不同计算方法之间的差异，阐明小型断层在区域裂陷作用变形过程中的重要意义。以二连断陷盆地群伸展量的确定为例，详细地介绍了这种方法的使用原理和步骤。

Studies of displacement distributions of brittle fault populations argue that they are fractally distributed.The fractal nature of faults may be used to estimate the contribution of small faults(those beyond the resolution of the sampling technique)to the total extension in fault basins.The discrepancy between different extension estimates can be resolved by accounting for the extension due to slip on small faults.In the paper the Erlian fault basin group,China is used as an example to state in details the principle and procedure of fractal method for extension estimate.