拉张盆地伸展量的分形分析——以渤海盆地为例

研究表明脆性断层的位移分布具有自相似结构，并且服从幂指数定律，即具有分形特征。该特征提供了一种计算拉张盆地伸展量的方法（即分数维法）。以此来阐明小断层的滑移对冲伸展量的贡献，从而弥补了由平衡复原法计算伸展量时产生的差值。以渤海盆地为例，本文详细介绍这种方法的原理及操作，取得了较好的拟合效果。

Fractal Analysis of Extensional Quantity of the Extensional Basin

Study shows that the displacement distribution of brittle fault population exhibits self-similarity and has the power-law relationship between displacement and accumulation. In other words, brittle fault population follows the fractal size distribution. The extensional quantity of a basin can be estimated based on this result (fractal method), which demonstrates the contribution of cumulative extension of a small fault to the whole one, and accounts for the discrepancy between the plain spastic restoration and the other methods. Taking the Bohai basin as an example, the principle and procedures of this method are introduced in detail and good fits have been obtained in the study area.