2011年中国4次成灾性气候异常及其原因分析  

Analyses on Four Climate Abnormalities of China in 2011 and Their Causes

作　　者：梁丰[1,2] 汤懋苍[1] 高晓清[1] 惠小英[1] 郭维栋[3] 

机构地区：[1]中国科学院寒区旱区环境与工程研究所寒旱区陆面过程与气候变化重点实验室/甘肃省干旱气候变化与减灾重点实验室,甘肃兰州730000 [2]中国科学院大学,北京100049 [3]南京大学大气科学学院,江苏南京210093

出　　处：《高原气象》2013年第3期904-908,共5页Plateau Meteorology

基　　金：国家973计划项目(2008CB425704);国家自然科学基金项目(40975049)共同资助

摘　　要：为了研究地震与气候异常的关系,从地震活动的角度对2011年发生在我国的4次成灾性气候异常进行了分析。结果表明,2011年长江中游春、夏季大旱的直接原因是3月24日发生在缅甸的7.2级地震;长江中下游6月上旬出现旱涝急转则与3月11日日本东部的9.0级地震及缅甸地震密不可分;鄂赣交界发生的4.6级地震对黄河中游秋汛的影响最为明显,这是"震侧强涡"造成的结果;2012年1月贵州冻雨较多也是受到印度锡金和我国东海两个地震形成的"拍涡"影响,这表明地震活动是影响天气、气候变化的可能原因之一。Four major climate anomalies of China in 2011, including severe drought in the middle reach of Yangtze River in spring and summer, the drought-flood abrupt alternation in the middle and lower reaches of the Yangtze River in early June, the autumn flood in middle reach of the Yellow River and freezing rain in winter of Guizhou are analyzed. The results show that they are well related with earthquakes. When the earthquake occurred, the geothermal vortex will develop that lead to precipitation increasing in this ar- ea. And after a period of earthquake, the geothermal vortex will weakened that cause to precipitation re- ducing. It is the result of big underground cold vortex. When two earthquakes occurred in one year, the beat vortex will form in the middle of them and it has a tremendous impact to flood.

关 键 词：地震 大地冷涡 拍涡 震侧强涡 

分 类 号：P456.9[天文地球—大气科学及气象学]