| 湖南两次流域性致洪暴雨异同点分析 |
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| 引用本文： | 许霖,姚蓉,陈斗.湖南两次流域性致洪暴雨异同点分析[J].气象研究与应用,2014(2):27-31. |
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| 作者姓名： | 许霖 姚蓉 陈斗 |
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| 作者单位： | 湖南省气象局; |
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| 基金项目： | 湖南省气象局重点科研课题(201203)《暴雨中尺度天气系统监测与分析技术研究》;中国气象局预报员专项《2013年典型梅雨锋影响大暴雨过程分析》(CMAYBY2014-044);国家财政部/科技部公益类行业专项(GYHY201306016) |
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| 摘 要： | 利用常规气象资料、水情资料及灾情资料,对发生地点、季节及影响系统相似的2010年7月8-14日和2012年7月11-19日两次湖南省持续性大范围暴雨天气过程进行对比分析,结果表明：（1）两次暴雨过程均具有持续时间长、暴雨频繁且集中、累计雨量大、洪涝严重等特点;（2）东北冷涡加强、副高东退南落,冷、暖空气在湖南交汇,导致连续性暴雨发生;（3）“10.7”暴雨过程冷、暖气流势力相当,雨带呈东西向,稳定少动,致灾性强.而“12.7”暴雨过程冷空气势力较强,雨带呈移动性,虽然致灾范围广,但灾情较前者轻.
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| 关 键 词： | 暴雨 洪涝 灾害成因 对比分析 |
Comparison analysis on two contiguous and torrential rains appealed Hunan in midsummer |
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| Xu Lin,Yao Rong,Chen Dou.Comparison analysis on two contiguous and torrential rains appealed Hunan in midsummer[J].Journal of Guangxi Meteorology,2014(2):27-31. |
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| Authors: | Xu Lin Yao Rong Chen Dou |
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| Institution: | (Hunan Province Meteorological Service, Changsha 410118, China) |
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| Abstract: | Based on meteorological data, hydrologic data and disaster, two wide range of rainstorm process （ 3uly 8-14, 2010 and July 11-19, 2012 ） were analyzed from the torrential rains characteristics, cause of formation, and flood characteristics and circulation background. The results show that： （1） there are the characteristics of long duration, frequent rainstorm, large accumulative rainfall and serious floods in both of two rainstorm processes. （2） With the cold vortex strengthen, subtropical high go south. Intersection of cold and warm air in Hunan easily leads to continuity rainstorm. （3） In the ＂ 10.7＂ rainstorm process, the rain belt was stabilized in the east-west because the cold and warm air evenly matched. In the ＂ 12.7＂ rainstorm process, the rain belt was characterized by stable because of the strong cold air. Although it＇s a wide range of hazards, the disaster was lighter than former. |
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| Keywords: | rainstorm flood causes of disasters comparative analysis |
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