@article{oai:kitami-it.repo.nii.ac.jp:00007754,
 author = {橋場, 雅弘 and 吉川, 泰弘},
 journal = {河川技術論文集},
 month = {Jul},
 note = {This study aimed to analyze field data on the behavior of river ice and hydraulic phenomena during river ice
breakup collected using non-contact instruments of SWIP(Shallow Water Ice Profiler), ADCP and Echo-Sounder. We
conducted an experiment with a large water tank in order to test the accuracy of instruments. In the field study, we
observed the behavior of river ice and hydraulic phenomena seen in the Teshio River using SWIP and ADCP units. It
was found that the rise of water levels during ice breakup tends to lag behind the maximum flow rate because of ice
accumulation as well as ice jams formed in the upstream part of the river. A phenomenon was observed in which ice
fragments and frazil that were formed upstream and flowed downstream moved under river ice. It was found that the
Froude number under ice-covered conditions remains at about 0.1, and that the coefficient of roughness tends to
decrease because of changes in river ice thickness. Based on analysis of the field data collected, we propose that
ice-transport capacity can be described using a dimensionless flow strength formula.},
 pages = {365--370},
 title = {天塩川における河川解氷時の河氷の挙動に関する現地観測},
 volume = {17},
 year = {2011}
}