全球不同区域火山爆发与中国夏季旱涝的关系

根据近500年来火山活动和中国旱涝资料,研究了中国旱涝型和各主要地区旱涝指数与不同火山区和不同季节火山爆发的统计关系,探讨了1991年江淮洪涝与该年6月火山爆发的可能联系。发现不同区域火山爆发对中国不同地区的旱涝影响不同,有的甚至截然相反。由统计检验表明,分区研究比不分区研究其信度明显提高。

THE RELATION BETWEEN LARGE VOLCANIC ERUPTION IN THE WORLD AND THE DROUGHT/FLOOD IN SUMMER IN CHINA

In this article, the authors divide the large volcanic eruption sites into 8 regions in the world. Based on the data for last 500 years of large volcanic activity and drought/flood types in summer in China, the statistical relations between the volcanic eruption for the different seasons in different regions where large vol-canos erupted in the world and drought/flood types and drought/flood index of every main region in China are investigated. The possible teleconnection between flood in the Yangtze River and the Huaihe River in 1991 and the large volcanic eruption of Mt. Pinatubo in June 1991 is also examined. It is found that it exists a different effect of the large volcanic eruption in regions where exist large vol-canos eruption in the world on drought/flood in different regions in China, But for some cases the effect is absolutely contrary in respect of drought/flood in summer. The statistical test shows confidence levels of the relation for dividing large volcanic eruption as several regions are higher than that for volcanic eruption in the world as whole.