J Navig Port Res > Volume 44(6); 2020 > Article
Journal of Navigation and Port Research 2020;44(6):447-452.
DOI: https://doi.org/10.5394/KINPR.2020.44.6.447    Published online December 31, 2020.
선박의 안전항해를 위한 겨울철 북태평양의 온대저기압에 관한 연구
고난영1, 설동일2
1한국해양대학교 대학원 항해학과 석사과정
2한국해양대학교 항해학부 교수
A Study on the Extratropical Cyclones in the North Pacific Ocean during the Winter Season for Safe Navigation of Ships
Nan-Young Ko1, Dong-Il Seol2
1Student, Graduate School of Korea Maritime & Ocean University, Busan 49112, Korea
2Professor, Division of Navigation Science, Korea Maritime & Ocean University, Busan 49112, Korea
Correspondence:  Nan-Young Ko, Tel: 051)410-4474, 
Email: kony8763@kmou.ac.kr
Received: 20 October 2020   • Revised: 2 November 2020   • Accepted: 3 November 2020
Extratropical cyclone in winter season is very important in safe operation of ships because it is a major cause of marine accidents due to its strong power. In this study, we used meteorological data, to analyze extratropical cyclones occurring near the 1st Pacific polar front from December 2019 to February 2020. The analysis results are as follows. During those three months, we recorded 41 extratropical cyclones, 8 of which were remarkably developed. The central pressure of the strongest cyclone was 947hPa. The highest number of cyclones were generated in the East P acific Ocean around J apan (16), followed by the areas around Korea, the East China Sea, and the southern Sea of J apan. The cyclones followed five major tracks with a common northeast pattern. We thus concluded that the optimal route for a ship encountering an extratropical cyclone in the North P acific in winter would be south of the cyclone's center traveling eastbound and north of the center traveling westbound.
Key Words: winter season, extratropical cyclone, marine accident, 1st Pacific polar front, major track

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