摘要
本文以海河清漳河流域河北境内部分地区为研究区域,分析指标采用小波分维,阐述了不同时期区域降雨复杂特性的不同分布。根据序列分维和其统计自相似性特征的映射关系,进一步揭示不同降雨序列的精细结构并剖析其变化原因,解析出研究区域降雨在不同时期年内频次特征变化和趋势,为区域水资源长期规划和旱涝预警管理提供了决策依据。
By taking a part of the region within Hebei Province of Qingzhanghe River Watershed of Haihe River Basin as the study area,the various distributions of the complicated characteristics of the regional precipitations during various periods are expatiated herein by adopting the wavelet fractal dimension for the analysis indexes.In accordance with the reflecting relationship between the serial fractal dimension and its statistical self-similarity,the fine-structure of various precipitation series is further revealed and the causation of its change is then dissected as well;from which the annual change of the frequency characteristics of the precipitation in various periods within the study area and its trend are given out for providing a decision-making basis for the regional long-term water resources planning and its early-warning management of drought and water-logging.
出处
《水利水电技术》
CSCD
北大核心
2014年第10期24-27,共4页
Water Resources and Hydropower Engineering
基金
国家重点基础研究发展计划"973"计划项目(2010CB951102)
中国工程院重大咨询项目"我国旱涝事件集合应对战略研究"(2012-ZD-13)
国家自然科学基金面上项目(51279207)
河北省自然基金面上项目(E2012402067)
关键词
降雨过程
复杂性
变化环境
小波分维
precipitation process
complexity
environment change
wavelet fractal dimension
