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Baymouth bar : ウィキペディア英語版 | Baymouth bar
A baymouth bar is a depositional feature as a result of longshore drift. It is a spit that completely closes access to a bay, thus sealing it off from the main body of water. These bars usually consist of accumulated gravel and sand carried by the current of longshore drift and deposited at a less turbulent part of the current. Thus, they most commonly occur across artificial bay and river entrances due to the loss of kinetic energy in the current after wave refraction. ==Sand Bypass Systems== In most cases, a Sand Bypass System is built to prevent these bars forming across the entrance of human-made seaways, eliminating the danger to commercial and recreational boats passing through. The world's first permanent Sand Bypass System was built on the Gold Coast in Queensland, Australia.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Baymouth bar」の詳細全文を読む
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