摘要
以宜昌水文站1950-2006年洪水极值事件为例，采用Morlet小波函数分析了1～60d洪水流量系列年际变化规律，揭示了洪水极值事件变化的多时间尺度的复杂结构，并根据主周期预测了未来变化。结果表明，该方法方便、有效，为研究水库调度、防洪规划、洪水极值流量变化、河流生态系统保护和修复提供了依据。
Take the flood extreme value events from 1950 to 2006 in Yiehang Hydrological Station as an example. This paper analyzes the inter-annual variation of the flood flow series from 1 to 60 days using Morlet wavelet function, reveals a multi-time scale complex structure of the variation of flood extreme events, and predicts the future changes in terms of the main period. The results show that the proposed method is convenient and effective. It provides a basis to study reservoir operation, flood control planning, extreme flood flow changes, protection and restoration of the river ecosystems.
出处
《水电能源科学》
北大核心
2010年第1期41-43,46,共4页
Water Resources and Power
基金
国家自然科学基金资助重大项目(30490235)
关键词
洪水流量
事件变化
小波分析
极值
尺度
周期
flood flow
events change
wavelet analysis
extreme value
scale
period
