Forecasting the Intrawater Ice Formation and Ice Jams in the Neva River

摘要

Considered is a dangerous ice phenomenon developing in the Neva River during its freezing, the formation of the intrawater ice resulting in the corking of water intakes, and ice jams causing a sharp water runoff decrease downstream of them and floods. Described are the forecasting techniques of the intrawater ice formation intensity, peak ice jam water levels, and thickness of ice jams.