The article examines iceberg movement under the influence of wind force, with detailed analysis of the influence of the iceberg shape (both underwater and above) on the parameters of this movement. For four icebergs, studied during 2016-2017 trials, hydrodynamic characteristics of the under- and above-water parts were determined by the means of numerical and basin modeling. For these icebergs orientation, direction and speed of movement are calculated for different wind speeds and directions. Regression between the maximum value of the hydrodynamic drag coefficient and the geometric parameters is built based on the studied shape of the above-water part of ten icebergs. A formula for calculating the wind load on an iceberg depending on the parameters of its topside, as well as a formula for calculating the drift speed of icebergs less than 75 meters long, are proposed. The formulas are applied to icebergs of the southwestern part of the Kara Sea, which made it possible to estimate their drift speed and wind load under the influence of wind. The obtained results can be used in modeling of the iceberg drift, as well as for assessing the wind impact during iceberg towing.
For development of the Arctic shelf an important factor influencing iceberg safety is the possibility to assess in sea conditions one or another characteristic of an iceberg based only on the above-water part. For this research it is useful to refer to previously studied icebergs with a known shape of the surface and underwater parts. Informative data on the Russian Arctic icebergs are published in (May et al, 2019), (Buzin et al, 2016), (Buzin et al, 2020) and on the derived correlations of the iceberg's above water shape in the papers:
• on iceberg stability (Kornishin et al, 2020);
• on towing load (Pashali et al, 2018), (Kornishin et al, 2019), (Efimov et al, 2019);
• on iceberg detection distance (Pavlov et al, 2018).