有明海における潮汐・潮流減少の原因について
スポンサーリンク
概要
- 論文の詳細を見る
There has been much discussion about the cause of the decrease in M2 tidal amplitude that has resulted from the reclamation of Isahaya Bay in Ariake Bay. As it has not been clarified yet, we tried to solve this problem using two approaches: (1) by analyzing observational data at tide stations near Ariake Bay and (2) by numerical calculations using a three-dimensional variable mesh model. Applying these two approaches to tidal amplitude at three stations in Ariake Bay from 1981 to 2001, it was shown that the 25% decrease in M2 tidal amplitude at Oura from 1981 to 2001 is caused by the Isahaya dike, and the remaining 75% decrease is caused by the attenuation of tide in the East-China Sea. This conclusion is verified by both approaches. Although the decrease of tidal amplitude in Ariake Bay responds linear to the external effects, the tidal amplitude changes caused by internal effects such as the Isahaya dike depend on the location; that is, there is a decrease at Oura, no change at Misumi and an increase at Kuchinotsu. This is explained by the change in the tidal oscillation pattern in Ariake Bay due to the reclamation of Isahaya Bay.
論文 | ランダム
- 対談 循環器病研究者の群像(16)
- 世界の中の日本の医学-14-循環器病学を中心に
- 降圧治療の目的とその効果 (高血圧症の治療--病態と治療の適応・選択)
- 反復法による固有ベクトルの微分
- 高血圧研究の展望 (高血圧症研究の進歩)