土木学会論文集B1(水工学)
Online ISSN : 2185-467X
ISSN-L : 2185-467X
水工学論文集第60巻
東京湾のクラゲのシミュレーションにおける水質の影響に関する数値実験
仲敷 憲和坪野 考樹野方 靖行遠藤 紀之石井 晴人
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2016 年 72 巻 4 号 p. I_955-I_960

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 Moon jellyfish has many habitat in inner bays and enclosed coastal seas in Japan, which sometimes causes fishery damage and failure of cooling water intake at power plants. It is desired to develop a method to predict an amount of generation and seasonal distribution change of jellyfish, especially in enclosed coastal area. A numerical approach such as a particle tracking method is effective and has been used to a simulation of long-term jellyfish transport. In this study, a particle tracking method is applied in Tokyo Bay to calculate the annual change of jellyfish distribution, in relation with temporal change of water quality such as salinity, DO, etc. An effect of water quality on jellyfish is added as an advection term of particle transport equation in a manner that is proportional to the gradient. Simulated distribution is qualitatively more consistent with existing observed distribution in comparison with the case without water quality effect, which demonstrates the potential of annual simulation of jellyfish distribution in enclosed bay area.

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