Physically based coefficient for streamflow estimation in ice-covered channels--论文发表-槐文信课题组

简介

Measuremental and methodological problems arising from the presence of ice cover on waterways have seriously hindered the progress in predicting timely and accurate streamflow, which is a prerequisite for the effective management of ice-covered waterways (eg streams, rivers, channels, and canals). Among various methods in the attempt to address this issue, the most attractive is the physically-based method, which does not require abundant, and often unobtainable, data. This paper develops a physically based K-factor method, in the form of a generalized Manning equation, for discharge estimations in ice-covered channels. The main advantage of this method is that it enables the prediction of streamflow in ice-affected seasons by a K-factor adjustment of the stage-discharge relationship developed in the open-water seasons. The results of parameter estimation show that the K-factor is only related to...