摘要
采用非趋势波动分析法(DFA)对汾河上游兰村站45年的天然月径流量进行了长程相关性分析,并计算出了标度指数。结果表明汾河上游径流演变具有正长程相关性,汾河上游历史径流量的演变呈衰减趋势状态基本保持一致,并会在未来的演变中继续保持这种衰减趋势状态的变化规律。
This paper makes the long-range correlation analysis on the natural monthly runoff in past 45 years at Lancun Station located in the upstream of the Fenhe River and calculates the scale index by using the detrended fluctuation analysis （DFA）. The analytic results indicate that the evolution of runoff in the upstream of the Fenhe River has a character of positive long-range correlation and the state of attenuate trend evolution about the historical runoff is basically consistent in the upstream of Fenhe River, and this state of attenuate trend will continue to be maintained in the future evolution.
出处
《科技情报开发与经济》
2011年第30期179-181,共3页
Sci-Tech Information Development & Economy
