Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 83228 10.2205/2025ES000986 gtogdm ОРИГИНАЛЬНЫЕ СТАТЬИ ORIGINAL ARTICLES ОРИГИНАЛЬНЫЕ СТАТЬИ Activity of Typhoons in the Spratly Archipelago (the South China Sea) Activity of Typhoons in the Spratly Archipelago (the South China Sea) https://orcid.org/0000-0001-5961-4988 Le Mau Dinh Le Mau Dinh https://orcid.org/0000-0002-0050-1441 Власова Галина Александровна Vlasova Galina Alexandrovna gavlasova@mail.ru https://orcid.org/0000-0002-4976-7136 Лебедев Сергей Анатольевич Lebedev Sergey Anatol'evich

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 https://orcid.org/0000-0001-9447-0852 Pham Hoan Sy Pham Hoan Sy https://orcid.org/0009-0007-1461-6681 Nguyen Dung Thi Thuy Nguyen Dung Thi Thuy https://orcid.org/0009-0000-8978-4718 Nguyen Tuan Van Nguyen Tuan Van https://orcid.org/0000-0002-4168-5945 Ho The Van Ho The Van Institute of Oceanography, Vietnam Academy of Science and Technology Nha Trang Вьетнам Institute of Oceanography, Vietnam Academy of Science and Technology Nha Trang Vietnam Graduate University of Science and Technology, Vietnam Academy of Science and Technology Вьетнам Graduate University of Science and Technology, Vietnam Academy of Science and Technology Vietnam Тихоокеанский океанологический институт им. В.И. Ильичева ДВО РАН Россия V. I. Il’ichev Pacific Oceanological Institute of Far Eastern Branch of Russian Academy of Sciences Russian Federation Геофизический центр Российской Академии Наук Россия Geophysical Center of Russian Academy of Sciences Russian Federation Майкопский государственный технологический университет Maikop State Technological University Национальный исследовательский университет «МИЭТ» National Research University of Electronic Technology Институт океанологии имени П. П. Ширшова РАН Россия Shirshov Institute of Oceanology, Russian Academy of Sciences Russian Federation Institute of Oceanography, Vietnam Academy of Science and Technology Вьетнам Institute of Oceanography, Vietnam Academy of Science and Technology Vietnam Institute of Oceanography, Vietnam Academy of Science and Technology Вьетнам Institute of Oceanography, Vietnam Academy of Science and Technology Vietnam Institute of Oceanography, Vietnam Academy of Science and Technology Вьетнам Institute of Oceanography, Vietnam Academy of Science and Technology Vietnam Institute of Oceanography, Vietnam Academy of Science and Technology Вьетнам Institute of Oceanography, Vietnam Academy of Science and Technology Vietnam 28 02 2025 28 02 2025 25 1 1 13 17 05 2024 27 01 2025 https://rjes.ru/en/nauka/article/83228/view

On the basis of statistical analysis, studies of the features of the distribution of typhoons in the Spratly Archipelago (the South China Sea) for the period 1884–2020 were carried out using satellite information. As a result, it was revealed that 229 typhoons were observed over the water area of the Spratly Islands during this period. Of these, 27 had a maximum speed of over 33 m/s. A clear trend is identified towards an increasing number of typhoons, which could be a major source of regional climate risks in the future. This is probably due to the intense development of the East Asian Monsoon with a strong tropical convergence zone under current climatic conditions.

On the basis of statistical analysis, studies of the features of the distribution of typhoons in the Spratly Archipelago (the South China Sea) for the period 1884–2020 were carried out using satellite information. As a result, it was revealed that 229 typhoons were observed over the water area of the Spratly Islands during this period. Of these, 27 had a maximum speed of over 33 m/s. A clear trend is identified towards an increasing number of typhoons, which could be a major source of regional climate risks in the future. This is probably due to the intense development of the East Asian Monsoon with a strong tropical convergence zone under current climatic conditions.

 South China Sea Spratly Archipelago tropical cyclones typhoons South China Sea Spratly Archipelago tropical cyclones typhoons This work was conducted in the framework of the state budgetary funding of the POI FEB RAS for 2024-2026: “Study of the structure and dynamics of the waters of the World Ocean under the conditions of modern climate change” (No 124022100079-4), the Vietnamese project code UNDP-VNM-00297, and Geophysical Center of RAS, adopted by the Ministry of Science and Higher Education of the Russian Federation. This work was conducted in the framework of the state budgetary funding of the POI FEB RAS for 2024-2026: “Study of the structure and dynamics of the waters of the World Ocean under the conditions of modern climate change” (No 124022100079-4), the Vietnamese project code UNDP-VNM-00297, and Geophysical Center of RAS, adopted by the Ministry of Science and Higher Education of the Russian Federation.

Bui, V. V., D. T. Tran, and H. N. Dang. 2009. “Some results of research on the terrain and sediments of the Truong Sa archipelago.” Vietnam Journal of Marine Science and Technology T9 (Supplement 1): 77–82. Bui, V. V., D. T. Tran, and H. N. Dang. 2009. “Some results of research on the terrain and sediments of the Truong Sa archipelago.” Vietnam Journal of Marine Science and Technology T9 (Supplement 1): 77–82. Cai, S., J. Su, Z. Gan, and Q. Liu. 2002. “The numerical study of the South China Sea upper circulation characteristics and its dynamic mechanism, in winter.” Continental Shelf Research 22 (15): 2247–64. https://doi.org/10.1016/S0278-4343(02)00073-0. Cai, S., J. Su, Z. Gan, and Q. Liu. 2002. “The numerical study of the South China Sea upper circulation characteristics and its dynamic mechanism, in winter.” Continental Shelf Research 22 (15): 2247–64. https://doi.org/10.1016/S0278-4343(02)00073-0. Chao, S. Y., P. T. Shaw, and J. Wang. 1995. “Wind relaxation as a possible cause of the South China Sea Warm Current.” Journal of Oceanography 51 (1): 111–32. https://doi.org/10.1007/BF02235940. Chao, S. Y., P. T. Shaw, and J. Wang. 1995. “Wind relaxation as a possible cause of the South China Sea Warm Current.” Journal of Oceanography 51 (1): 111–32. https://doi.org/10.1007/BF02235940. Chevey, P., and P. Carton. 1934. Les courants de la Mer de Chine méridionale et leurs rapports avec le climat de l’Indochine. Institut Océanographique de l’Indochine, Gouvernement General De L’Indochine. Chevey, P., and P. Carton. 1934. Les courants de la Mer de Chine méridionale et leurs rapports avec le climat de l’Indochine. Institut Océanographique de l’Indochine, Gouvernement General De L’Indochine. CSIS. 2024. “Southwest Cay.” https://amti.csis.org/dao-song-tu-tay/?lang=vi. CSIS. 2024. “Southwest Cay.” https://amti.csis.org/dao-song-tu-tay/?lang=vi. Dale, W. L. 1956. “Wind and drift current in the South China Sea.” Malaysian Journal of Tropical Geography 8: 1–31. Dale, W. L. 1956. “Wind and drift current in the South China Sea.” Malaysian Journal of Tropical Geography 8: 1–31. Do, H. C. et al. 2018. Environmental changes in coatings and solutions for sustainable development in atolls in the Truong Sa archipelago. Hanoi: Publishing house for Science; Technology. Do, H. C. et al. 2018. Environmental changes in coatings and solutions for sustainable development in atolls in the Truong Sa archipelago. Hanoi: Publishing house for Science; Technology. Duy, D. B., N. D. Than, N. T. Tuyet, et al. 2016. “Characteristics of Tropical Cyclones in the Northwestern Pacific Ocean, the East Sea and Their Directly Affected Areas in Vietnam for the Period 1978-2015.” VNU Journal of Science: Earth and Environmental Sciences. Hanoi 32 (2). Duy, D. B., N. D. Than, N. T. Tuyet, et al. 2016. “Characteristics of Tropical Cyclones in the Northwestern Pacific Ocean, the East Sea and Their Directly Affected Areas in Vietnam for the Period 1978-2015.” VNU Journal of Science: Earth and Environmental Sciences. Hanoi 32 (2). Hancox, D., and V. Prescott. 1995. A geographical description of the Spratly Islands and an account of hydrographic surveys amongst those islands. Maritime Briefing. Volume 1. Number 6. UK: International Boundaries Research Unit. Hancox, D., and V. Prescott. 1995. A geographical description of the Spratly Islands and an account of hydrographic surveys amongst those islands. Maritime Briefing. Volume 1. Number 6. UK: International Boundaries Research Unit. Hang, V. T., N. T. T. Huong, and P. V. Tan. 2010. “Some characteristics of typhoon activity in Vietnam coastal regions during 1945-2007.” VNU Journal of Science: Natural Sciences and Technology. Hanoi 26 (3S): 344–53. Hang, V. T., N. T. T. Huong, and P. V. Tan. 2010. “Some characteristics of typhoon activity in Vietnam coastal regions during 1945-2007.” VNU Journal of Science: Natural Sciences and Technology. Hanoi 26 (3S): 344–53. Institut Océanographique de L’Indochine. 1931. Campagnes du <<De Lanessan>> (1925-1929): Liste des Stations. Gouvernement Général de L’Indochine, Saigon, Imprimerie Ạ Portail, rue Catinat. Institut Océanographique de L’Indochine. 1931. Campagnes du <<De Lanessan>> (1925-1929): Liste des Stations. Gouvernement Général de L’Indochine, Saigon, Imprimerie Ạ Portail, rue Catinat. Krempf, A. 1927. La forme des récifs coralliens et le régime des vents alternants. (Travaux du Service Océanographique des Pêches de L’Indochine, 2e Mémoire). Gouvernement General de L’Indochine. Krempf, A. 1927. La forme des récifs coralliens et le régime des vents alternants. (Travaux du Service Océanographique des Pêches de L’Indochine, 2e Mémoire). Gouvernement General de L’Indochine. Le, D. M. 2005. “Estimation of wave characteristics during hurricane in Khanhhoa area.” Vietnam Journal of Marine Science and Technology 2 (5): 1–17. Le, D. M. 2005. “Estimation of wave characteristics during hurricane in Khanhhoa area.” Vietnam Journal of Marine Science and Technology 2 (5): 1–17. Le, D. M. et al. 2021. Meteorological, hydrological and dynamic characteristics of the waters of the Truong Sa archipelago. Hanoi: Publishing house for Science; Technology. Le, D. M. et al. 2021. Meteorological, hydrological and dynamic characteristics of the waters of the Truong Sa archipelago. Hanoi: Publishing house for Science; Technology. Le, D. M., H. L. Tran, and M. C. Nguyen. 2015. “Present state of ocean observation and service in Vietnam.” Vietnam Journal of Marine Science and Technology 15 (4): 309–19. https://doi.org/10.15625/1859-3097/15/4/7376. Le, D. M., H. L. Tran, and M. C. Nguyen. 2015. “Present state of ocean observation and service in Vietnam.” Vietnam Journal of Marine Science and Technology 15 (4): 309–19. https://doi.org/10.15625/1859-3097/15/4/7376. Le, D. M., G. A. Vlasova, M. N. Demenok, et al. 2020. “Distribution features of meteorological parameters in Spratly islands area.” Vietnam Journal of Marine Science and Technology 20 (4): 405–16. https://doi.org/10.15625/1859-3097/15323. Le, D. M., G. A. Vlasova, M. N. Demenok, et al. 2020. “Distribution features of meteorological parameters in Spratly islands area.” Vietnam Journal of Marine Science and Technology 20 (4): 405–16. https://doi.org/10.15625/1859-3097/15323. Le, D. M., G. Vlasova, and T. T. D. Nguyen. 2021. “Distribution features of the typhoons in the South China Sea.” Russian Journal of Earth Sciences 21 (1): 8. https://doi.org/10.2205/2020ES000746. Le, D. M., G. Vlasova, and T. T. D. Nguyen. 2021. “Distribution features of the typhoons in the South China Sea.” Russian Journal of Earth Sciences 21 (1): 8. https://doi.org/10.2205/2020ES000746. McGregor, G. R. 1995. “The tropical cyclone hazard over the South China Sea 1970 - 1989.” Applied Geography 15 (1): 35–52. https://doi.org/10.1016/0143-6228(95)91061-2. McGregor, G. R. 1995. “The tropical cyclone hazard over the South China Sea 1970 - 1989.” Applied Geography 15 (1): 35–52. https://doi.org/10.1016/0143-6228(95)91061-2. Nguyen, H. Y., and N. T. Dang. 2008. Biological resources and ecosystems in the waters of Hoang Sa and Truong Sa archipelagos. Hanoi: Publishing house for Science; Technology. Nguyen, H. Y., and N. T. Dang. 2008. Biological resources and ecosystems in the waters of Hoang Sa and Truong Sa archipelagos. Hanoi: Publishing house for Science; Technology. Nguyen, K. C., T. H. ao, C. H. Le, and H. Vu. 1999. “Atmospheric physical characteristics in the Truong Sa archipelago.” In Collection of scientific reports of the 4th National Marine Science and Technology Conference. Volume I, 152–58. Hanoi: Statistical Publishing House. Nguyen, K. C., T. H. ao, C. H. Le, and H. Vu. 1999. “Atmospheric physical characteristics in the Truong Sa archipelago.” In Collection of scientific reports of the 4th National Marine Science and Technology Conference. Volume I, 152–58. Hanoi: Statistical Publishing House. Nguyen, T. H. 2000. “Hydrodynamics and corals in the formation and surface development of Phan Vinh, Toc Tan and Thuyen Chai coral reefs.” In Research works on marine geology and geophysics, 143–57. Hanoi: Publishing house for Science; Technology. Nguyen, T. H. 2000. “Hydrodynamics and corals in the formation and surface development of Phan Vinh, Toc Tan and Thuyen Chai coral reefs.” In Research works on marine geology and geophysics, 143–57. Hanoi: Publishing house for Science; Technology. Nguyen, V. C. et al. 1993. Coastal dynamics and engineering geology, proposed solutions to prevent coastal erosion of Truong Sa archipelago (TS-02). Hanoi: Final report on national level project. Nguyen, V. C. et al. 1993. Coastal dynamics and engineering geology, proposed solutions to prevent coastal erosion of Truong Sa archipelago (TS-02). Hanoi: Final report on national level project. Pham, V. N. 2003. Marine Meteo-hydrodynamic of the South China Sea. National Program on marine investigation KHCN-06 (1996-2000). Hanoi: National University Publishing House. Pham, V. N. 2003. Marine Meteo-hydrodynamic of the South China Sea. National Program on marine investigation KHCN-06 (1996-2000). Hanoi: National University Publishing House. Robson, G. C. 1928. Céphalopodes des mers d’Indochine. Saigon: Gouvernement General De L’Indochine. Robson, G. C. 1928. Céphalopodes des mers d’Indochine. Saigon: Gouvernement General De L’Indochine. Shaw, P. T., and S. Y. Chao. 1994. “Surface circulation in the South China Sea.” Deep Sea Research I 41 (11–12): 1663–83. https://doi.org/10.1016/0967-0637(94)90067-1. Shaw, P. T., and S. Y. Chao. 1994. “Surface circulation in the South China Sea.” Deep Sea Research I 41 (11–12): 1663–83. https://doi.org/10.1016/0967-0637(94)90067-1. Tran, V. H., V. L. Nguyen, V. N. Nguyen, and C. Q. Bui. 1998. Collection of Contributions on Natural Conditions and Resources of the Truong Sa Archipelago. Edited by V. T. Pham. Hanoi: Publishing house for Science; Technology. Tran, V. H., V. L. Nguyen, V. N. Nguyen, and C. Q. Bui. 1998. Collection of Contributions on Natural Conditions and Resources of the Truong Sa Archipelago. Edited by V. T. Pham. Hanoi: Publishing house for Science; Technology. Uu, D. V. 2011. “Variability of the tropical cyclone number affected directly to Vietnamese main land.” VNU Journal of Science: Natural Sciences and Technology. Hanoi 27 (1S): 266–72. Uu, D. V. 2011. “Variability of the tropical cyclone number affected directly to Vietnamese main land.” VNU Journal of Science: Natural Sciences and Technology. Hanoi 27 (1S): 266–72. Vasiliev, D. V., and E. P. Shavlay. 2020. “South China Sea in confrontation between China and the United States in Asia.” Asia and Africa Today 7: 61–66. https://doi.org/10.31857/S032150750010107-9. Vasiliev, D. V., and E. P. Shavlay. 2020. “South China Sea in confrontation between China and the United States in Asia.” Asia and Africa Today 7: 61–66. https://doi.org/10.31857/S032150750010107-9. Vlasova, G. A., B. X. Nguyen, D. M. Le, and S. S. Marchenko. 2022. “Influence of tropical cyclones of the South China Sea on variability of the Vietnamese Coastal Current Structure.” Oceanology 62 (1): 13–21. https://doi.org/10.1134/S0001437022010180. Vlasova, G. A., B. X. Nguyen, D. M. Le, and S. S. Marchenko. 2022. “Influence of tropical cyclones of the South China Sea on variability of the Vietnamese Coastal Current Structure.” Oceanology 62 (1): 13–21. https://doi.org/10.1134/S0001437022010180. Wikipedia. 2024a. “Spratly.” https://ru.wikipedia.org/wiki/%D0%A1%D0%BF%D1%80%D0%B0%D1%82%D0%BB%D0%B8. Wikipedia. 2024a. “Spratly.” https://ru.wikipedia.org/wiki/%D0%A1%D0%BF%D1%80%D0%B0%D1%82%D0%BB%D0%B8. Wikipedia. 2024b. “Spratly Island.” https://en.wikipedia.org/wiki/Spratly_Island. Wikipedia. 2024b. “Spratly Island.” https://en.wikipedia.org/wiki/Spratly_Island. Wyrtki, K. 1961. Physical oceanography of Southeast Asian waters. Scientific Results of Marine Investigations of the South China Sea and Gulf of Thailand 1959-1961. NAGA report. Volume 2. La Jolla, California: Scripps Institute of Oceanography. Wyrtki, K. 1961. Physical oceanography of Southeast Asian waters. Scientific Results of Marine Investigations of the South China Sea and Gulf of Thailand 1959-1961. NAGA report. Volume 2. La Jolla, California: Scripps Institute of Oceanography.