摘要
利用最小二乘原理建立多项式的系数矩阵,结合Origin软件对实测的2009年逊毕拉河流域吴家堡站水文要素值日平均流量进行了多项式拟合,拟合结果表明：相对误差的最大值为0.025％,最小值为0.001 4％,平均值为0.013 6％,其计算值接近实测值,因此用构造的水位～流量关系曲线可以准确、可靠地描述东北寒区逊毕拉河水位流量时序演变规律.
Basing on the datas of hydrologic factors Xunbila River in 2009, make a polynomial fitting with the software of microcal origin. The result showed that the maximum absolute deviation is 0. 025 %, the minimum is 0. 001 4%, the average is 0. 013 6%, and all of the water level value calculated are closed to actual value. Consequently, the curves of water level-discharge relation can describe accurately and reliably the development regularity of water level-discharge relation in cold region river of northeast.
出处
《黑龙江大学工程学报》
2014年第1期32-35,40,共5页
Journal of Engineering of Heilongjiang University
关键词
中小河流
水文要素
时序演变
寒区
small river
hydrologic factors
time series evolution
cold region
