地理科学 ›› 1985, Vol. 5 ›› Issue (1): 73-78.doi: 10.13249/j.cnki.sgs.1985.01.73

• 论文 • 上一篇    下一篇

长江流域降雨的空间变化

许孟英   

  1. 中国科学院地理研究所
  • 出版日期:1985-01-20 发布日期:1985-01-20

SPATIAL VARIATION OF PRECIPITATION OVER THE YANGTZE RIVER BASIN

Xu Mengying   

  1. Institute of Geography, Academia Sinica
  • Online:1985-01-20 Published:1985-01-20

摘要: 关于长江流域降雨的研究,无论是区域分布、季节变化或降雨类型等,近年来都作了不少工作,但从方向及距离两方面讨论两站之间降雨气候特征,至目前为止,国内尚无人做过。作者认为用这种方法分析降雨特征,更多地考虑了地理因子,不仅是一种研究方法,在科学上也是有意义的。本文试用这种方法分析以汉口站为中心,与沿长江两岸地区4~9月降雨的关系。文内所包括的范围,系指25°~35°N,110°-120°E地区,共挑选51个台站,资料年代取启1953~1980年。台站分布如图1。

Abstract: In this paper, the author analyses the spatial variation of precipitation over the Yangtze River Basin, using the method of correlation coefficient based on data during April-Sept. from 1953 to 1980. The results are summerized as follows:(1) There is well correlation near Hanko, but the coefficient decresaes rapidly with increase of distance from it. The decrease is faster in southwest direction than one in east-west direction. (2) The maximum correlation coefficient emerges in the east of Yichang along both sides of the Yangtze River. (3) The maximum correlation directions are NW-NWW in the east of Hanko, and SW SWW in the west of Hanko.