Study on generation of oxygen-depleted water based on stochastically changing solar radiation intensity.
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.
Fujita
K
K
Kyushu Environmental Evaluation Association, 1-10-1 Matsukadai, Higashiku, Fukuoka 813-0004, Japan.
Hasemi
H
H
Tanaka
K
K
Lee
I C
IC
Kusuda
T
T
D000818:Animals; D004784:Environmental Monitoring; D005068:Eutrophication; D005398:Fisheries; D007564:Japan; D008962:Models, Theoretical; D010100:Oxygen / Q000032:analysis*; D012995:Solubility; D013472:Sunlight
D010100:Oxygen