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| 基于信息熵理论的泥石流沟谷危险度评价 | |
| 引用本文： | 铁永波,唐川,周春花. 基于信息熵理论的泥石流沟谷危险度评价[J]. 灾害学, 2005, 20(4): 43-46 |
| 作者姓名： | 铁永波 唐川 周春花 |
| 作者单位： | 1. 云南师范大学,旅游与地理科学学院,云南,昆明,650092 2. 成都理工大学,地质灾害防治与地质环境保护国家专业实验室,四川,成都610059 3. 云南大学,资源环境与地球科学学院,云南,昆明,650091 |
| 摘 要： | 泥石流沟谷是一个复杂的地貌系统,有其发生、发展和衰退的过程.文章从系统科学和地貌学的角度出发,运用了能综合表述地貌演化特征的因子-地貌系统信息熵对泥石流沟谷进行危险度评价,研究以昆明市东川城区后山深沟、石羊沟和尼姑拉沟为试点,对各泥石流沟的信息熵进行了计算.结果表明,深沟和石羊沟的地貌信息熵值分别为0.124和0.174,泥石流沟谷正由发育的中年末期向老年期演化;尼古拉沟的信息熵值为0.246,正处于沟谷发育的旺盛时期,计算结果与当地实际情况有较好的一致性. |
| 关 键 词： | 信息熵 泥石流沟谷 危险度评价 |
| 文章编号： | 1000-811X（2005）04-0043-04 |
| 收稿时间： | 2005-04-11 |
| 修稿时间： | 2005-04-11 |
Information Entropy-based Hazard Assessment of Debris Flow Gully |
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| TIE Yong-bo,TANG Chuan,ZHOU Chun-hua. Information Entropy-based Hazard Assessment of Debris Flow Gully[J]. Journal of Catastrophology, 2005, 20(4): 43-46 | |
| Authors: | TIE Yong-bo TANG Chuan ZHOU Chun-hua |
| Affiliation: | 1. The College of Tourism and Geographical Science of Yunnan Normal University, Kunming 650092, China ; 2. National Specialty Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu 610059, China; 3. Science of Resource Environment and Earth Science of Yunnan University, Kunming 650091, China |
| Abstract: | Debris flow gully is a complex geomorphic system. It usually go through the young stage, mature stage and old stage. This paper, in light of the system science and geomorphology, uses geomorphic information entropy which can be used to indict the characteristics of evolution of landforms to study debris flow gully and make risk assessment of debris flow gully. Taking three debris flow gullys of Dongchuan as cases, their information entropies are calculated. The results show that the information entropies of Shengou Gully and Shiyang Gully are respectively 0. 124 and 0. 174. They both are in the transitional period between mature stage and old stage. The information entropy of Nigula Gully is 0. 246 and it is in the mature stage. All these calculations are high consistent with the local condition. |
| Keywords: | information entropy debris flow gully risk assessment |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |