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中文摘要：
基于分形理论，使用网格法估算了甘孜—玉树断裂东南段断裂系统不同走向、不同区域断层的分维值，借助等值线图对断裂的分形特征做出分析，结合相关资料探究研究区断裂的活动性。研究结果表明：研究区断裂系统在1～10km的标度区间内具有良好的自相似性，整体断裂分维值为1.5443，NW向断层分维值远大于NE向断层，以甘孜—玉树断裂为主的NW向断裂在研究区内具有较强的控制作用；甘孜—玉树断裂SW盘分维值大于NE盘，表现出更强的活动性和更复杂的断裂分布；研究区分维值的大小能有效反映断裂的活动性及其空间分布情况，研究区内甘孜—玉树断裂尚处于发育的活跃阶段，各段均存在较大的发震可能性。
英文摘要：
Based on the fractal theory, the fractal dimension values of the southeast segment of Ganzi-Yushu fault is calculated by grid method, and analysis of the characteristics of fractal and activity is done by the contour map and relevant data. The study shows that the fractal dimension value of the study area is 1. 5443, and there is a good self-similarity in the scale range of 1 to 10 kilometers. The NW fault has higher fractal dimension values than the NE fault, and the NW fault has more powerful control action than the NE fault. The SW side of the Ganzi-Yushu fault has a larger fractal dimension value than the NE side, and it shows that the SW side is more active and more complex on fault distribution than NE side. The fractal dimension values could reflect to the activity and fault distribution well. And the Ganzi-Yushu fault is in the“active” phase, and there is a higher likelihood of earthquake in the study area.
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