@article{oai:kitami-it.repo.nii.ac.jp:00007750,
 author = {吉川, 泰弘 and 渡邊, 康玄 and 早川, 博 and 平井, 康幸},
 journal = {水工学論文集},
 month = {Feb},
 note = {Flow discharge at the period of a frozen river is the important data for a long term full-year plan of water resources
plan. Detailed field observation was carried out at three sites in Teshio River in Hokkaido, Japan. The techniques for
presuming energy gradient, open water area, hydraulic radius and flow velocity coefficient were shown in the analysis
of the observation. Relation between flow velocity coefficient, hydraulic radius and energy gradient was clarified in a
frozen river. A formula for estimating flow discharge of a frozen river using the water level and ice covered area was
developed. The cover rate of estimating flow discharge using the formula was approximately 83% of 40 data with a
margin of error of 20% plus or minus.},
 pages = {1075--1080},
 title = {河川結氷時の観測流量影響要因と新たな流量推定手法},
 volume = {54},
 year = {2010}
}