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2012年秦皇岛市夏秋季降水异常偏多,暴雨洪涝、地质灾害严重,给工农业生产及交通航运等带来严重损失。利用统计分析方法对6~11月秦皇岛异常降水进行分析,结果表明:6~11月连续6个月降水偏多,为1955年有气象记录以来唯一年份;11月全市降水偏多5倍以上,创有气象记录以来极值;7下8上区域性暴雨范围大,持续时间长,尤其8月3~4日受台风“达维”影响,出现了近50 a最大洪涝。在分析降水异常基础上,对引起的气象灾害及其影响进行了分析。 相似文献
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1993年西北太平洋共生成28个台风,其移动路径趋势有其独特性。有7个台风登陆日本;8个登陆菲律宾;7个台风登陆我国广东和海南省,直接损失高达70亿元,为1949年以来最严重的一年。但没有一个台风登陆华东和华北沿海,这也是极为罕见的。本文分析了1993年台风移动的天气学原因,及其与厄尼诺现象的关系。并着重分析了台风移动路径的卫星云图特征。从而有助于判别台风究竟是北上转向,还是西行登陆我国。 相似文献
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地壳突发性放气与水灾行为关系的研究 总被引:1,自引:0,他引:1
本文阐述了由于1994年9月14日台湾海峡7.3级地震孕震应力场作用而引起大面积突发性放气,导致1994年第24号台风行为不规律的机制。地震本身可给人类造成灾难,而在某些条件下也可能引起其它灾难。 相似文献
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利用苏州市2010—2012年大气污染物逐时质量浓度数据和气象条件资料,分析4类高影响天气对该市大气污染物扩散的影响。研究表明:暴雨对污染物的清除作用主要与降水时间和强度等因子有关,且降水时间的影响大于降水强度;夏季高温日污染物平均质量浓度高于非高温日,PM10、PM2.5、O3、NO2分别增长了29.5%、19.2%、51.3%和13.5%,且O3质量浓度大于321.6μg/m3的日最高气温均在33℃以上;寒潮过境对污染物有很好的清除效应,可对不同污染物影响程度不同;台风带来的大风和降雨能使污染物浓度迅速降低,其来临前的外围下沉气流可能对污染物浓度升高有影响。 相似文献
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Due to frequent drinking water pollution accidents in the past decade, it is common that mountain reservoirs were used as the source of drinking water in China. However, some coastal areas frequently suffer from typhoon with extreme precipitation, which results in the water quality deterioration of the reservoirs. The influence of typhoons with extreme precipitation on Jiaokou reservoir and the emergency treatment process of Maojiaping water treatment plant in the past three typical typhoons with extreme precipitation from the year of 2012–2015 were studied. It was found that the degradation of water quality, such as the increase of turbidity and bacteria index, may not merely appear during the events, but last for several days. Changing the dosage of water purification agent, such as coagulant and disinfectant at right time and place may be an efficient emergency water treatment process. Based on the analysis of water quality variation rule during and after the events, it was also found that emergency treatment can be fully prepared before the arrival of a typhoon with extreme precipitation. And in order to better respond to the typhoon with extreme precipitation, several suggestions are also proposed in this paper as follows: establishing vegetated buffers at right place, such as macrophanerophytes, shrub or herbage, increasing investments in infrastructure management, merging or cancelling the small-scale water treatment plants, preparing adequate water purification agent before the typhoon comes, etc. 相似文献
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Most members of Taiwan's indigenous communities live in areas that are prone to natural disasters. Yet, due to their marginalised cultural, economic and political status, each time such calamities strike, any assistance they receive is usually provided without considering their actual needs. The areas hardest hit by Typhoon Morakot in August 2009 were the indigenous villages in the southern and eastern parts of the island. After the initial emergency relief efforts had been completed, there remained the highly challenging task of reconstruction and the resettlement of those who lost their homes and livelihoods. This paper examines the cultural conflicts that arose during the reconstruction process, with special emphasis on the participation of Taiwan's indigenous communities and their capacity for resilience. It was found that community participation and identification are key issues in effective disaster governance. 相似文献
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浙江乐清湾台风风暴潮灾害及防御对策 总被引:3,自引:0,他引:3
通过对乐清湾台风风暴潮的调查研究, 阐述了台风风暴潮对人类的危害, 科学分析风暴潮的成因, 在此基础上, 提出对乐清湾台风风暴潮灾害的防御对策 相似文献