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Bài viết trình bày kết quả nghiên cứu về đặc điểm xuất hiện bão và áp thấp nhiệt đới tại vùng biển quần đảo Trường Sa thời kỳ 1884–2018, các thông tin về đặc trưng của bão như vị trí, tốc độ gió tại tâm bão. | Đặc điểm hoạt động của bão và áp thấp nhiệt đới tại vùng biển quần đảo Trường Sa tỉnh Khánh Hòa Vietnam Journal of Marine Science and Technology Vol. 19 No. 4A 2019 35 41 DOI https doi.org 10.15625 1859-3097 19 4A 14586 https www.vjs.ac.vn index.php jmst Activity features of tropical cyclone in Truong Sa archipelago region Khanh Hoa province Le Dinh Mau Nguyen Thi Thuy Dung Pham Sy Hoan Nguyen Van Tuan Nguyen Chi Cong Phan Thanh Bac Nguyen Duc Thinh Institute of Oceanography VAST Vietnam E-mail ledinhmau.vnio@gmail.com Received 30 July 2019 Accepted 6 October 2019 2019 Vietnam Academy of Science and Technology VAST Abstract This paper presents the study results of occurrence feature of tropical cyclone in Truong Sa archipelago region in the period from 1884 to 2018. Data on tropical cyclone such as storm track intensity. were taken from the website www.weather.unisys.com hurricane National Weather Service USA . The study results show that the study region is the most active area of tropical cyclone activity with about 1.61 times year. The occurrence frequency of tropical cyclone was increasing from 1988 to 2018. The period from 1884 to 1944 the occurrence frequency of tropical cyclone was about 1 time year from 1945 to 2018 the occurrence frequency of tropical cyclone was higher at about 2.4 times year. Especially in the years of 2013 and 2017 tropical cyclone occurred 6 times year. In the years of 2008 1998 1993 1983 1962 it occurred 5 times year. The study region underwent the effect of two tropical cyclone seasons the main season was from September to January of the next year with the occurrence frequency of tropical cyclone being about 4 times higher than that of the season from March to August. The period of highest occurrence frequency of tropical cyclone was from October to December whereas the lowest occurrence frequency of tropical cyclone was in July. The main season of tropical cyclone activity coincided with strong Northeast monsoon period. Keywords .
