地理科学 ›› 2002, Vol. 22 ›› Issue (3): 311-316.doi: 10.13249/j.cnki.sgs.2002.03.311

• 论文 • 上一篇    下一篇

中国东北地区夏季旱涝的分析研究

孙力, 安刚, 丁立   

  1. 吉林省气象科学研究所, 吉林 长春 130062
  • 收稿日期:2001-08-06 修回日期:2001-11-06 出版日期:2002-05-20 发布日期:2002-05-20
  • 基金资助:
    科技部社会公益研究专项基金、国家自然科学基金资助项目(49875022)。

The Characteristics of Summer Drought and Flood in Northeast Area of China

SUN Li, AN Gang, DING Li   

  1. Institute of Meteorological Science of Jilin Province, Changchun, Jilin 130062
  • Received:2001-08-06 Revised:2001-11-06 Online:2002-05-20 Published:2002-05-20

摘要: 利用东北三省及内蒙东北部均匀分布的80个测站40年(1961~2000年)夏季(6~8月)月降水资料以及正态化Z指数变换、小波分析和正交旋转主成份分析等方法,对东北地区夏季降水进行了旱涝等级划分,并探讨了旱涝发生的时间演变规律和空间分布特征。结果表明,东北地区夏季不同级别旱涝出现的几率存在着一定的差异,并且旱涝异常还具有明显的年际、年代际和周期性变化以及阶段性和群发性特征,地理分布上,可将东北地区夏季降水分为7个旱涝型(或敏感区),各敏感区内旱涝异常具有相对一致的性质。

Abstract: With Z index according to the Person Ⅲ distribution, REOF and Wavelet analysis methods, the spatial anomaly features and time evolution rule of summer drought and flood in northeast area of China are studied by using the precipitation in June, July and August for the period 1961-2000 from 80 observational stations. The results show that the summer drought and flood in northeast are of China have the obvious characteristics of periodic change, interannual and inter-decade variations. The northeast area of China can be divided into seven dryness/wetness anomaly areas. In each area, the drought and flood coincide relatively.

中图分类号: 

  • P463.1