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| 陕北黄土高原区地质灾害与降水关系 | |
| 引用本文： | 李明,杜继稳,高维英.陕北黄土高原区地质灾害与降水关系[J].干旱区研究,2009,26(4). |
| 作者姓名： | 李明 杜继稳 高维英 |
| 作者单位： | 1. 陕西省气象台,陕西,西安,710014 2. 陕西省气象局,陕西,西安,710014 3. 西安市气象局,陕西,西安,710016 |
| 基金项目： | 2007年国土资源大调查项目延安宝塔区地质灾害监测预警示范(水[2007]017-07);;陕西省气象局重点项目黄土高原重大自然灾害监测预报研究(2005Z-3);;诱发陕西地质灾害暴雨预报研究(2008Z-2)项目共同资助 |
| 摘 要： | 利用1960-2006年陕北黄土高原区发生的地质灾害及对应的年、月、逐日降水资料,采用数理统计方法分析二者关系,确定该区域地质灾害气象预报思路。结果表明:陕北黄土高原区地质灾害年发生次数和年降水量不成正比;地质灾害主要发生在降水量集中的7～9月,特别是和前10 d的累积降水量有明显的相关性。暴雨、大雨诱发的地质灾害主要是在当日或次日发生,中雨诱发的地质灾害在降水后10 d内各日均可出现。陕北黄土高原区地质灾害属于多日降水诱发型,一般需要3 d以上的降水日。过程雨量大于50 mm时滑坡次数明显增多,过程雨量大于10mm,就可出现较多崩塌。陕北黄土高原区铜川、耀县的临界雨量较大,子长、子洲、米脂、绥德、延安、延川、延长、安塞、吴旗、志丹的临界雨量较小。 |
| 关 键 词： | 地质灾害 降水 气象预报 黄土高原 陕北 |
Study on the Relationship between Geological Disasters and Precipitation in the Loess Plateau in North Shaanxi Province |
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| LI Ming,DU Ji-wen,GAO Wei-ying.Study on the Relationship between Geological Disasters and Precipitation in the Loess Plateau in North Shaanxi Province[J].Arid Zone Research,2009,26(4). | |
| Authors: | LI Ming DU Ji-wen GAO Wei-ying |
| Institution: | 1.Shaanxi Province Meteorological Observatory;Xi'an 710014;China;2.Shaanxi Province Meteorological Bureau;3.Xi'an Meteorological Bureau;Xi'an 710016;China |
| Abstract: | This paper analyzes the relationship between geological disasters and rainfall based on the records of geological disasters and the data of annual precipitation and monthly and daily rainfall during the period of 1960- 2006.The results show that the occurring frequency of geological disasters is not the direct proportion with annual precipitation,and the geological disasters occur mainly in July,August and September.Especially,there is a significant correlation between the occurrence of geological disasters... |
| Keywords: | Loess Plateau North Shaanxi Province geological disaster precipitation rainfall |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |