Author(s): Hyunseok Lee; Takuya Mori; Tadaharu Ishikawa
Linked Author(s):
Keywords: LANDSAT-7; Satellite; Salinity; Turbidity; Freshet; Flood; Field measurement
Abstract: In fact, the field measurement at the bay in flood is almost impossible. Therefore, to grasp salinity distribution at the bay in flood, the development of the utilization method only with satellite data without measured turbidity is indeed. In this study, using 4 bands of Landsat-7, the method of satellite image analysis without field measurement is investigated. Three kinds of investigations are carried out. First investigation method is the utilization of the upper stream data measured at the monitoring station which is situated at 30km above the New-Kitakami river mouth. Second investigation method is to obtain the salinity directly from the CCT value of satellite data corresponding to the river mouth. Third investigation method is to obtain the salinity from the relationship between water temperature and salinity. It is confirmed that the salinity distributions obtained from above three investigation methods are quite reasonable and clear.
Year: 2005