title: Study on generation of oxygen-depleted water based on stochastically changing solar radiation intensity.
abstract: To examine the generation probability of oxygen-depleted sea water in Hakata Bay, possible 20 time-series of different hourly-solar-radiation intensities were generated stochastically, and a numerical simulation on dissolved oxygen was carried out for each time series. The results of the model calibration followed the seasonal variation of observed water quality well, and generated cumulative-frequency-distribution curves of daily solar radiation agreed well with the observed ones. The simulation results indicated that the exchange of sea water would have a great influence on the DO concentration, and that the concentration could change more than 1 mg/L in a day. This prediction method seems to be an effective way to examine a solution to minimize fishery damages when DO is depleted.
authors.affiliation: Kyushu Environmental Evaluation Association, 1-10-1 Matsukadai, Higashiku, Fukuoka 813-0004, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Fujita
authors.forename: H
authors.initials: H
authors.lastname: Hasemi
authors.forename: K
authors.initials: K
authors.lastname: Tanaka
authors.forename: I C
authors.initials: IC
authors.lastname: Lee
authors.forename: T
authors.initials: T
authors.lastname: Kusuda
mesh_terms: D000818:Animals; D004784:Environmental Monitoring; D005068:Eutrophication; D005398:Fisheries; D007564:Japan; D008962:Models, Theoretical; D010100:Oxygen / Q000032:analysis*; D012995:Solubility; D013472:Sunlight
chemical_list: D010100:Oxygen