广西汛期暴雨特征及其与南海夏季风建立期的关系

利用1960―2006年共47年广西88个气象测站逐日降雨量资料,分析了广西汛期暴雨站次、日数等降水特征及其变化趋势和可能的成因,并通过相关分析研究南海夏季风建立期与广西汛期暴雨日数、洪涝站次、受灾面积等的关系.结果表明,南海夏季风建立期与广西汛期暴雨总日数等降水特征相关显著,当南海夏季风建立偏早(晚)时,广西汛期暴雨日数偏多(少),发生洪涝的可能性增大(减少),并且这种相关关系在近22年来有增强的趋势.

Frequency Characteristics of Rainstorms in Flood Season of Guangxi and Correlation to the Onset Time of South China Sea Summer Monsoon

In order to raise the ability of forecasting rainstorm and flood in the rainy seasons (from April to September) and to provide a decision reference for flood control and disaster reduction work, some rainstorm characteristics including frequency, day number, space-time distribution, tendency and approximate formation cause, are analyzed by using the daily rainfall records during 1960-2006 at the 88 meteorological stations in Guangxi province. The correlation analysis method was used to reveal the relationsh...