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| 滑坡频度-降雨量的分形关系 | |
| 引用本文： | 李长江,麻土华,李炜,郑爱平,朱兴盛.滑坡频度-降雨量的分形关系[J].中国地质灾害与防治学报,2010,21(1):87-93. |
| 作者姓名： | 李长江 麻土华 李炜 郑爱平 朱兴盛 |
| 作者单位： | 1. 浙江省国土资源厅信息中心,浙江杭州,310007 2. 浙江省国土资源厅地质环境处,浙江杭州,310007 3. 浙江大学地球科学系,浙江杭州,310027 |
| 摘 要： | 降雨-滑坡关系是对降雨引发的滑坡进行预报的一个重要基础。本文根据中国浙江省1990～2003年期间有明确日期和坐标记录的1414个滑坡数据和基本覆盖浙江全部陆地区域的1257个雨量站记录的日降雨量数据,研究了滑坡频度-降雨关系。研究结果表明,降雨引发滑坡的频度与降雨量之间遵循分形的幂指数关系,并且在两个尺度的降雨量范围内具有不同的标度指数。按照幂指数关系拟合的两条滑坡累计频度-降雨关系线交点(拐点)处的降雨量(Rin)指出了引发75%左右滑坡的累计降雨阀值的上边界(以THCR表示)。对1d、4d、6d和11d这4个累计降雨时段的研究表明,引发75%左右滑坡的累计降雨阀值分别为205mm(1d)、273mm(4d)、294mm(6d)、315mm(11d)。 |
| 关 键 词： | 滑坡频度 降雨阈值 幂指数分布 分形 浙江省 |
Fractal relation of landslide frequency and rainfall |
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| LI Chang-jiang,MA Tu-hua,LI Wei,ZHENG Ai-ping,ZHU Xing-sheng.Fractal relation of landslide frequency and rainfall[J].The Chinese Journal of Geological Hazard and Control,2010,21(1):87-93. | |
| Authors: | LI Chang-jiang MA Tu-hua LI Wei ZHENG Ai-ping ZHU Xing-sheng |
| Institution: | LI Chang-jiang1,MA Tu-hua1,LI Wei2,ZHENG Ai-ping3,ZHU Xing-sheng1(1.Zhejiang Information Center of Land and Resources,Hangzhou 310007,China,2.Zhejiang Provincial Department of Land & Mineral Resources,3.Department of Earth Sciences,Zhejiang University,Hangzhou 310027,China) |
| Abstract: | This paper studied the relationship between the landslide occurrences and the rainfall level based on 1414 landslides from field survey and daily rainfall data corresponding to the date of the landslide occurrence during 1990-2003 in Zhejiang Province,China.The results showed that the cumulative frequency of the landslide occurrence correlates well with the landslide-triggering rainfall and can be described using two power-law relations with different scaling exponents for two different ranges of the rainfa... |
| Keywords: | landslides regional rainfall thresholds power law distributions fractals |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |