Wind drift, breakdown and pilling up of the ice field fragments

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Abstract

The article contains mathematical model of the wind drift of the ice field, which allows to estimate the drift speed depending on the wind speed and the size of the ice field, as well as the kinetic energy of the ice field that will be released after it collide with a fixed obstacle, and cause brittle fracture and the formation of fragments that forms piles in front of stationary offshore structures. The basis for the study was the assumption that the effect of wind and water mass on the ice field can be described by methods used in aerodynamics and theory of ship. The model of the process of ice pile formation and the estimation of its dimensions were based on the assumption that all kinetic energy of the ice field is spent on its brittle breakdown, and the formation of the ice fragments pile occurs according to the same laws as in natural accumulations of ice fragments: hummock ridges and stamukhs. The created model and results of computer modelling can be applied for practical assessments and forecast of the dimensions of the ice computer simulation made it possible to relate the size of the pile of ice fragments near stationary platforms and terminals in the Arctic seas and other ice infested seas.

About the authors

V. K. Goncharov

Saint Petersburg State Marine Technical University

Author for correspondence.
Email: vkgonch@mail.ru
Russian Federation, Saint Petersburg

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