2026-03-14T22:49:31Z https://fra.repo.nii.ac.jp/oai

oai:fra.repo.nii.ac.jp:02007918 2025-06-11T07:51:52Z 12:14:1716955731445

急潮流が生じる航路の流況観測の試み Current observation in a channel under strong tidal current condition ― A case study of Manzeki-Seto-Channel ― 万関瀬戸の事例報告 50372058 Yamamoto, Jun 山本, 潤 ヤマモト, ジュン Yamamoto 山本 ヤマモト Jun 潤 ジュン 30372056 Akeda, Sadamitsu 明田, 定満 アケダ, サダミツ Akeda 明田 アケダ Sadamitsu 定満 サダミツ Tokiyoshi, Manabu 時吉, 学 トキヨシ, マナブ Tokiyoshi 時吉 トキヨシ Manabu 学 マナブ metadata only access idal current; channel; waterway to be developed and preserved; tidal observation In order to calculate the tidal current correctly for evaluating the water quality of a bay, it is necessary to compare a calculation result with an observed value at the point at which the maximum tidal current velocity generates. The area for calculation is Asou bay in Tsushima Island. It is a closed bay that is being used for aquaculture. The bay has a narrow channel called Manzeki-Seto at the east side. Through the channel, the seawater is flowing violently, sometimes from an open boundary of the east side, and sometimes from the bay. It is an important channel to exchange the seawater of the closed bay. Manzeki-Seto-Channel is one of "the waterways to be developed". The waterway is used frequently by large-sized vessels and fishing boats etc. Therefore, it was rather difficult to observe in the waterway. There is no archived observational data relevant to compare with our computed data. We performed tide level and current observation in Manzeki-Seto-Channel. The observation result of a current was verified by numerical computation. As a result, it turned out that flow velocities are about 2.0m/s (from west to east), 1.0m/s (from east to west) in the time of the spring tide and 1.5m/s (from west to east), 0.5m/s (from east to west) in the time of the neap tide. 水産工学研究所 National Research Institute of Fisheries Engineering 2004-03 jpn article VoR https://fra.repo.nii.ac.jp/records/2007918 nrife_g_26_1 https://agriknowledge.affrc.go.jp/RN/2010691242 日本農学文献記事索引(agriknowledge) AN1056052X 1341-8750 水産工学研究所技報 Technical report of National Research Institute of Fisheries Engineering 26 7 1 7