摘要
基于渭河中游流域咸阳水文站典型年日流量资料,分别选取枯水年(2001年)、丰水年(2003年)、平水年(2007年)径流量过程进行基流分割。采用BFI法、直线分割法、平滑最小值法、数字滤波法4类(7种)分割方式进行基流分割。结果表明,直线分割法获得的基流量最大,BFI分割法和平滑最小值法基流量值靠近,数字滤波法中F2和F3法是渭河流域最为稳定可靠的基流分割法。
Based on the daily flow data in typical years of Xianyang Hydrologic Station of the middle reaches of Weihe River, three typical years which are the low flow year (2001), the high flow year (2003) and the normal year (2007) are selected to study the runoff process for base flow separation. The base flows are separated in seven methods that are BFI method, linear partition method, Smoothed Minima method and four kinds of digital filtering method. The results show that the base flow separated in linear partition method is the largest, the results adopting BFI method and the Smoothed Minima method are approximate, and the F2 and F3 of digital filtering method are the most stable and reliable base flow separation methods for Weihe River Basin.
出处
《水力发电》
北大核心
2017年第2期15-17,80,共4页
Water Power
基金
山西省科技攻关计划(20140313023-4)
国家青年科学基金项目(51509176)
太原理工大学校基金(2015MS011)
山西省水文局项目(ZNGZ2015-036)
关键词
基流分割
BFI法
直线分割法
平滑最小值法
数字滤波法
base flow separation
BFI method
linear partition method
Smoothed Minima
digital filtering method