✦ LIBER ✦

Aspects of river ice hydrology in Japan

✍ Scribed by Kenichi Hirayama; Makoto Yamazaki; Hung Tao Shen

Publisher: John Wiley and Sons
Year: 2002
Tongue: English
Weight: 551 KB
Volume: 16
Category: Article
ISSN: 0885-6087
DOI: 10.1002/hyp.375

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✦ Synopsis

Abstract

Rivers in northern Japan are subjected to ice formation each winter. They are typically very steep with rapid changes in channel slope. As a result, ice covers are usually discontinuous with open water sections. Winter discharges in Japanese rivers are usually very small. Water temperature and ice production in these streams are very sensitive to the change in air temperature. The open water sections enable the formation of frazil and anchor ice during the winter. Owing to the relatively stable winter weather and heavy snow cover, premature break‐up and ice jams rarely occur, even though the channel geometry of these rivers is favourable for their occurrence. In this paper, hydrometeorological factors related to ice‐cover formation, frazil and anchor‐ice development, and ice‐jam formation, as well as measurements of the undercover discharge in rivers in northern Japan are discussed. Copyright © 2002 John Wiley & Sons, Ltd.

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