中山大学学报（自然科学版）2013，Vol.52Issue(1)：136-141,6.
基于DFA方法的珠江流域极端降水阈值研究
Researches on DFA-based Extreme Precipitation Threshold in the Pearl River Basin
摘要
Abstract
Extreme precipitation events occur rarely and are difficult to collect samples. There are still uncertainty problems with the definition of extreme precipitation threshold, which is variable and not unified. This study summarizes the uncertainties of extreme precipitation threshold based on Fixed Critical Value Method, Special Percentile Value Method and the Goodness of Extreme Value Distribution Fitting Test. In order to overcome these problems, a new method, named as DFA, has been used to discuss the physical mechanism and applicable conditions. The system dynamics-based DFA, tracks extreme precipitation threshold by analyzing the characteristics of long range correlation of the precipitation series and can well reflect the statistical effects and scientific background of precipitation series. It is applicable to define extreme precipitation threshold within a basin.关键词
珠江流域/极端降水/阈值/DFA方法Key words
the Pearl River basin/ extreme precipitation/ threshold/ detrended fluctuation analysis分类
天文与地球科学引用本文复制引用
刘丙军,伍丽丽,陆文秀..基于DFA方法的珠江流域极端降水阈值研究[J].中山大学学报（自然科学版）,2013,52(1):136-141,6.基金项目
国家自然科学基金资助项目(50909106) （50909106）
教育部青年教师培育基金资助项目(3161399) （3161399）
广东省科技计划基金资助项目(2011B030800008) （2011B030800008）
