PROBLEM TO BE SOLVED: To provide a method for preventing generation itself of a red tide annoying many fishery households, without using an artificial agent not included originally in sea water as hitherto.SOLUTION: Generation of red tide is prevented by a device in which vertical mixing of sea water layers is generated by inputting ground water having a low water temperature, in which oxygen is stirred, without using an agent or the like at all, to thereby prevent rise of the water temperature and occurrence of a eutrophication state.SELECTED DRAWING: Figure 12COPYRIGHT: (C)2016,JPO&INPIT【課題】多くの水産業者を悩ませる赤潮を、従前のような元来海水中に含まれない人口の薬剤を使用することなく、発生そのものを防除する方法を提供する。【解決手段】薬品等を一切使用せず、酸素を撹拌させた水温の低い地下水を海水に投入することで海水層の垂直混合を起こし、水温の上昇と富栄養化状態を阻止する本装置で、赤潮の発生を防除することを特徴とする。【選択図】図12
