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추코트와 보퍼트 해에서 계측된 해빙 두께와 건현과의 관계
정성엽(Seong-Yeob Jeong),최경식(Kyungsik Choi),조성락(Seong-Rak Cho),강국진(Kuk-Jin Kang),이춘주(Chun-Ju Lee) 한국해양공학회 2014 韓國海洋工學會誌 Vol.28 No.6
The thickness of Arctic sea ice is a particularly significant factor in Arctic shipping and other ice-related research areas such as scientific sea ice investigations and Arctic engineering. In this study, the relation between the measured sea ice thickness and freeboard on the Chukchi and Beaufort Seas during the 2010 and 2011 Arctic cruise of the icebreaking research vessel “Araon” were considered. An assumption of hydrostatic equilibrium was used to estimate the ice thickness as a function of the freeboard. Then, to examine the degree of error, a sensitivity analysis of the thickness estimation of the sea ice was conducted. The error in the density and depth of the snow and the error in the density of the seawater were subordinate parameters, but the density of the ice and the freeboard were the primary parameters in the error colculation. The presented relation formula showed fairly close agreement between the calculated and measured results at a freeboard of >0.24 m.
쇄빙연구선 ARAON호를 이용한 북극해 해빙의 재료특성 (1)
박영진(Young-Jin Park),김대환(Dae-Hwan Kim),최경식(Kyungsik Choi) 한국해양공학회 2011 韓國海洋工學會誌 Vol.25 No.2
A field trial in an ice-covered sea is one of the most important tasks in the design of icebreaking ships and offshore structures. To correctly estimate the ice load and ice resistance of a ship's hull, it is essential to understand the material properties of sea ice during ice field trials and to use the proper experimental procedure for gathering effective ice data. The first Korean-made icebreaking research vessel, "ARAON," had her second sea ice trial in the Arctic Ocean during the summer season of 2010. This paper describes the test procedures used to obtain proper sea ice data, which provides the basic information for the ship's performance in an ice-covered sea and is used to estimate the correct ice load and ice resistance of the IBRV ARAON. The data gathered from the sea ice in the Chukchi Sea and Beaufort Sea during the Arctic voyage of the ARAON includes the temperature, density, and salinity of the sea ice, which was believed to be from two-year old ice floes. This paper analyses the gathered sea ice data in comparison with data from the first voyage of the ARAON during her Antarctic Sea ice trial.