摘要
依据洮河流域红旗站1956～2005年逐月径流量资料，采用Kendall检验法、线性趋势分析法、累积距平法，分析洮河流域径流的时空变化规律，重点探讨不同时间段月径流的变化和季节性变化特征，并对径流减少的成因以及汛期各月出现不同频率洪水的可能性进行了分析，得出如下结论：洮河径流呈现年际变化大、年内分配不均匀、季节性突出和周期性明显的特点，较大以上洪水主要发生在8—9月份，出现的概率为5．4％。
Based on runoff data collected in the Hongqi Station of the Tao river area from 1956 to 2005, the article takes the Kendall testing method, linear trend analysis method to analyze the spatiotemporal changing regulation, mainly discusses monthly runoff and seasonal changing characteristics at different time. It also analyzes causes of runoff decreased and different frequency flood appearing every month in the flood season. The result is that the Tao river has many characteristics such as annual changing obvious, distribution unequal inside the year, seasonal outstanding and periodicity obvious and the flood possible will be mainly occurring in August or September and its probability is 5.4%.
出处
《地下水》
2009年第2期67-70,91,共5页
Ground water
关键词
年际变化
年内分布
季节变化
径流
Annual changing, distribution inside the year, seasonal changing, runoff and Tao River
