| 不同类型地貌的各向异性分形与多重分形特征研究 |
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| 关键词:Tianshan landform self-affine fractal multifractal dynamic geomorphology |
| 基金项目:新疆地震科学基金资助项目(200007) |
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| 摘要: |
| On Fractal and Multifractal Properties for Different Types of Landforms |
| By using the standard deviation method,the scaling properties described by the local fractal dimension D and crossover length tc of 48 measured landform profiles in different direction of 6 different studied landform sections in Tianshan area are calculated. After that, the multifractal spectra D q-q are computed by fixed-mass method. The results show that in the studied scaling range different types of landscapes and profiles in different directions perform different fractal properties,that is,the D value and crossover length tc decrease in turns with the landform type from high-moutain,mid-low mountain to basin,and the profile parallel to wear grooves often has lower D values than those perpendicular to wear grooves does in the same section. Furthermore, the shapes and va-lue ranges of profile multifarctal D q in different landform types and in different directions of the same sections perform different properties and anisotrpies. It can be concluded that the landscape fractal properties depends closely on the intensity, manner and inhomoge-nity of exogenic and inogenic processess,and with the properties, we can study quantatively the dynamic geomorphic process. |
| LI Meng,ZHU Ling-ren,LONG Hai-ying.2003.On Fractal and Multifractal Properties for Different Types of Landforms[J].Acta Geoscientica Sinica,24(3):237-242. |
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