应用科学学报 ›› 2003, Vol. 21 ›› Issue (2): 117-121.

• 论文 • 上一篇    下一篇

黄河上游河川径流变化多时间尺度分析

刘俊萍, 田峰巍, 黄强   

  1. 西安理工大学水利水电学院 陕西 西安 710048
  • 收稿日期:2002-05-30 修回日期:2002-09-05 出版日期:2003-06-10 发布日期:2003-06-10
  • 作者简介:刘俊萍(1969-),女,山西太原人,博士生;田峰巍(1958-),男,陕西径阳人,教授,博导;黄强(1958-),男.四川梓渔人,教授,博导.
  • 基金资助:
    国家自然科学基金(50079021);国家重点基础研究发展规划(973项目,G1999043608)

A Multiple Time Scales Analysis of the Runoff Variation Along the Upper Reaches of the Yellow River

LIU Jim-ping, TIAN Feng-wei, HUANG Qiang   

  1. Institue of Hydroelectric Engineering, Xi'an University of Technology, Xi'an 710048, China
  • Received:2002-05-30 Revised:2002-09-05 Online:2003-06-10 Published:2003-06-10

摘要: 应用小波变换理论,采用兰州站1919~1996年共78年间天然径流资料,研究黄河上游河川径流变化规律,分析不同时间尺度下的周期及突变点.小波方差检验表明,黄河上游径流变化的主要周期是22年,其次是15年、4年和37年,以22年的主要周期预测黄河上游1996年后直到2007年前后径流将处于偏枯期。

关键词: 径流变化, 周期, 小波分析, 黄河上游

Abstract: By applying the theory of wavelet transformation and the 1919-1996 natural runoff records of Lanzhou hydrometric station, the runoff variation along the upper reaches of the Yellow River is studied. The periods of runoff and points of abrupt change at different time scales are analyzed. The wavelet variance verification indicates that the main periods of the runoff variation along the upper reaches of the Yellow River are 22, 15, 4 and 37 years respectively in order of importance. Basing on the main period of 22 years, we predict that runoff will be in the dry period from about 1996 to about 2007.

Key words: upper reaches of Yellow River, runoff variation, wavelet analysis, period

中图分类号: