地理研究 ›› 1998, Vol. 17 ›› Issue (1): 23-30.doi: 10.11821/yj1998010005

• 论文 • 上一篇    下一篇

外营力地貌作用随机特性和分形布朗地貌的稳定性*

艾南山, 朱治军, 李后强   

  1. 四川联合大学物理系 成都 610064
  • 收稿日期:1997-04-18 修回日期:1997-12-30 出版日期:1998-03-15 发布日期:1998-03-15
  • 作者简介:艾南山,男,1939年5月生,四川联合大学资源环境研究所和物理系教授。主要从事理论地理学和理论地貌学的研究。发表论文200余篇。
  • 基金资助:
    *国家自然科学基金资助项目(49671005)

ON THE STOCHASTIC NATURE OF EXOGENIC PROCESSES AND THE STABILITY OF FRACTIONAL BROWNIAN LANDSCAPE

Ai Nanshan, Zhu Zhijun, Li Houqian   

  1. Department of Physics, Sichuan University, Chengdu 610064
  • Received:1997-04-18 Revised:1997-12-30 Online:1998-03-15 Published:1998-03-15

摘要: 通过建立外营力地貌作用的分形模型,揭示了外营力在微观上塑造地表不平的动力机制。外营力在宏观和微观上具有各自的表现,可能预示地貌空间尺度的差异,使演化具有不同的独特规律。

关键词: 外力过程, 分形布朗运动, 分维

Abstract: According to Scheidegger's "Instability Principle", the development of landforms, controlled by exogenic processes which are essentially random, is unstable.But the instabilities cannot grow indefinetely, there is a certain size limitation present.To discover the behaviour of the exogenic processes, a fractional Brownian model of exogenic morphological evolution is proposed.There are two kinds of landform evalution.

Key words: exogenic process, fractional Brownian motion, fractal dimension

PACS: 

  • P931