| 基于小时雨量的泥石流滑坡降雨特征分析 |
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| 引用本文： | 冯汉中,徐琳娜,杨康权,陈朝平.基于小时雨量的泥石流滑坡降雨特征分析[J].四川气象,2011(4):18-23. |
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| 作者姓名： | 冯汉中 徐琳娜 杨康权 陈朝平 |
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| 作者单位： | 四川省气象台; |
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| 基金项目： | 行业专项“强降水诱发山体滑坡、泥石流气象预报预警技术(GYHY201006039)” |
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| 摘 要： | 利用2007～2010年6～9月四川加密自动气象站雨量监测资料,分析了小时雨量特征,并结合其间的泥石流、滑坡地质灾害个例,对泥石流、滑坡发生时的降雨特点进行了分析。结果表明,1500m以下小时平均雨强较大时段出现在1～7时,1500m以上小时雨强较大时段出现在夜间10时至次日8时,短历时强降雨是诱发泥石流的关键因素,而滑坡的发生受降水的累计和滞后效应影响。海拔1500m以下,发生泥石流、滑坡一般需要50mm的降水,1500～3500m海拔,6小时降水有15～20mm,就有可能引发泥石流、滑坡,而在3500m以上,6小时降水有10～15mm即可。
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| 关 键 词： | 泥石流 滑坡 降雨 特征 |
Feature Analysis of Precipitation with Flow and Landslide Based on Hour-rainfall |
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| FENG Hanzhong,XV Linna,YANG Kangquan,CHEN Chaoping.Feature Analysis of Precipitation with Flow and Landslide Based on Hour-rainfall[J].Journal of Sichuan Meteorology,2011(4):18-23. |
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| Authors: | FENG Hanzhong XV Linna YANG Kangquan CHEN Chaoping |
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| Institution: | FENG Hanzhong,XV Linna,YANG Kangquan,CHEN Chaoping(Sichuan Provincial Meteorological Observatory,Chengdu,610072) |
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| Abstract: | Using the rainfall data in encrypted automatic weather stations from June to September,2007-2010 in Sichuan province,the hour-rainfall characteristics is analysed,and by combining with the occurrence of flows or landslides which happened at the same time,the characteristics of precipitation is analysed.The results show that: The hour-average heavy rainfall mainly occurred during 1 a.m.to 7 a.m.when its geopotential height is below 1500 meters,else other happened during 10 p.m.to 8 a.m.the next day when its ... |
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| Keywords: | flow landslide precipitation characteristics |
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