Abstract
In order to estimate salinity distributions based on the optical properties of color dissolved organic matter using the geostationary ocean color satellite in Tokyo Bay, aCDOM(440) estimation model was developed using optical observation data in the field and the estimation application range of the estimated aCDOM(440) was evaluated using the developed bio-optical model for Tokyo Bay. As a result, the aCDOM(440) estimation error increased with increase of light absorption coefficient for particles but it was applicable to estimate salinity relatively after applying the model to GOCI image. Furthermore, the estimated salinity maps showed a situation that low salinity water mass near Edogawa estuarine area spreaded out to Funabashi and Urayasu offshore sides. In addition, when river discharges increased, it was confirmed that low salinity water mass spreaded from the estuarine areas of Arakawa, Sumida and Tama rivers to Kawasaki offshore and it was gradually mixed with high salinity water mass.
