Improving the quality of navigation and hydrographic support in the Arctic rivers estuarine waterways
Abstract On the rivers of the Arctic region common navigation conditions are characterized by quickly changing water levels, a wide riverbed with narrow and embayed fairways, numerous point and spatial navigation hazards. Spatial navigational hazards represent dangerous isobaths of irregular geometr...
| Published in: | IOP Conference Series: Earth and Environmental Science |
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| Main Authors: | , , |
| Format: | Article in Journal/Newspaper |
| Language: | unknown |
| Published: |
IOP Publishing
2019
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1088/1755-1315/378/1/012089 https://iopscience.iop.org/article/10.1088/1755-1315/378/1/012089/pdf https://iopscience.iop.org/article/10.1088/1755-1315/378/1/012089 |
| Summary: | Abstract On the rivers of the Arctic region common navigation conditions are characterized by quickly changing water levels, a wide riverbed with narrow and embayed fairways, numerous point and spatial navigation hazards. Spatial navigational hazards represent dangerous isobaths of irregular geometric shape which do not follow the bank configuration. For reliable visual positioning of the vessel during passage floating marks are widely used. For the winter period floating marks are removed as not designed for use in ice conditions. The most difficult periods for navigation thus come when floating marks are being removed from their adopted positions or being put back. Difficult weather and navigational conditions in conjunction with absence of floating marks increase effect of random component on accuracy of positioning and maneuvering of vessels. Normally safety of the vessels in narrows is assessed by the methods of systems theory. It uses mathematical models of the movement of vessels, which takes into account the totality of all hydrodynamic and mechanical forces acting on the vessel. Intension to support navigational safety during period when floating marks are partially removed makes it important to take into account the stochastic nature of many factors affecting the efficiency of solving navigation tasks. By means of the situational approach based on the methods of mathematical statistics it possible to estimate the levels of navigation safety in congested sea areas, on inland waterways, when designing sea channels, approach routes to ports, etc. |
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