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RISS 인기검색어
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- 저자 : 이창현(ChangHyen LEE) (검색결과 1 건)
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김찬주(Chanju KIM),서정원(Jungwon SEO),이창현(ChangHyen LEE),신형호(HyeongHo SHIN),김대진(Daejin KIM) 전남대학교 어업기술연구소 2016 어업기술연구소보고지 Vol.9 No.1
The typhoon is one of the disaster which the man will overcomes. Till now many scientist have studied on the typhoon for a long time but it remains for a man that it will study in future. So we have interested in the typhoon and have studied on climate change by approaching of the typhoon at the shelter area of ship. The surveys are carried out during 2 days from 9th. July. to 10th. July. in 2014 by the training ship “Dong Beak” of Chonnam National University. The model of the survey was the Typhoon “NEOGURI” born at the 4th. July in 2014. The results obtained can be summarized as follows; The journey period of Typhoon Neoguri from the birth point of the typhoon to the sea area of Korea was about 6 days, and the approach velocity of the typhoon was rapidly increasing after passing through 25 degrees of the latitude. Meanwhile, considering most typhoons formed from the ocean at lower latitude take more than 7 days to reach Korea, the period of the Typhoon Neoguri was shorter than the average approaching period. Thus, it is considered that making preparation of vessels and ships for typhoon is needed from the point of over 25 degrees of the latitude. When it comes to the change of barometric pressure by a barometer had been taking place gradually till the day before the typhoon approached. The change of barometric pressure, however, was varied very sharply from the time of 12 hours before the typhoon approached to the time of 3 hours after the typhoon. The change of wind velocity by an anemometer was varied very widely for 3 hours after passing through the closest point where the typhoon was headed, but was rapidly in a state of tranquility after the 3-hour. The maximum instantaneous wind velocity was 33 knots, being the closest to the typhoon’s path, 1010hours 9th,Jul. The change of wind direction by a wind direction indicator had been shown before 9 hours when the radical change accelerated, and the trend of wind direction was general clockwise that the beginning was the east wind and it was changed as the south wind. Also, when approaching typhoon nearly, and reaching the highest point of wind velocity, the prevailing wind was the north wind. In a nut shell, regarding the change of barometer pressure, the wind velocity and the wind direction was widely varied on the basis of the approaching point of the typhoon. Therefore, the vessels or ships which are heading for sea need to figure out how to handle the situation related with typhoon by using the result of this paper. In other words, as it has been shown from the Typhoon Neoguri, we should find the sea area reducing the south wind while the dangerous semicircle and the south wind of typhoon can deal a fatal outcome to vessels and ships, and should decide the best area as a shelter of ship at typhoon area, which can protect the wind and wave by obtaining confidential information.
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