日本地球惑星科学連合2019年大会

講演情報

[E] ポスター発表

セッション記号 A (大気水圏科学) » A-OS 海洋科学・海洋環境

[A-OS12] Marine ecosystems and biogeochemical cycles: theory, observation and modeling

2019年5月27日(月) 17:15 〜 18:30 ポスター会場 (幕張メッセ国際展示場 8ホール)

コンビーナ:伊藤 進一(東京大学大気海洋研究所)、平田 貴文(北海道大学地球環境科学研究院)、Enrique N Curchitser(Rutgers University New Brunswick)、Eileen E Hofmann(Old Dominion University)

[AOS12-P06] Numerical study on seasonality of ocean litters collected at the Dongsha Island in the northern South China Sea

*Yi-Chia Hsin1Chia-Ying Ko2Ming-Shiou Jeng3 (1.Research Center for Environmental Changes, Academia Sinica、2.Institute of Fisheries Science, National Taiwan University、3.Biodiversity Research Center, Academia Sinica)

キーワード:ocean litters, numercial study, South China Sea

Distribution of ocean litters collected at the Dongsha Island, an isolated island in the northern South China Sea, shows a significant seasonal change. More litters were accumulated in the northern (southern) part of the island in winter (summer). By means of backward-tracking simulation by considering the effect of both ocean currents and winds (i.e., windage), a series of numerical experiments are carried out to clarify the possible source and mechanisms for the observational seasonal change of litters. Results exhibit that, in winter, low-windage litters are mainly from the western Philippine Sea via the Luzon Strait while the high-windage ones are contributed from the Taiwan Strait. In summer, litters from the southwestern South China Sea, i.e. east of Vietnam, could be a major origin.