A REMOTE SENSING STUDY OF JIAOZHOU BAY Ⅱ. CALCULATION OF DYNAMICAL PARAMETERS
Zheng Quanan, Wu Longye, Dai Maoying, Pan Jiayi and Ji Yuqiang (First Institute of Oceanography, SOA, Qingdao 266003)
Landsat TM data are used to measure the area corresponding to average high tide of a bay, S11, and the area covered by sea water at the time when satellite past, S2%. And the area covered by sea water in a bay can be expressed by a linear equation:S = kh + b, (1)where h is tidal level, k and b are constants to be determined.By substituting satellite remote sensing data, S11 and S22, into Eq. (1) the constants, k and b, can be determined. Then, when the tidal level is measured, the area covered by sea water in the bay corresponding to the tidal level can be calculated by using Eq. (1). Therefore, the dynamical parameters such as the area covered by sea water below zero meter, the tidal flux volume, and average deposit rate of the bay can be deduced. When the tidal flux volume, the function of bottom topography at inlet, and of the vertical profile of tidal current velocity are known, the maximum velocity of tidal current of inlet of the bay can be calculated by integra tion. The dynamical parameters of Jiao Zhou Bay obtained with the above method are as follows: the total area is 390 km2, the area below zero meter 257km2, the tidal flux volume 9.48×108m3, the average deposit rate 1.4cm/a, and the maximum tidal current velocity 1.2m/s.The method to assimilate satellite remote ensing data into the dynamical study! of the,bay presented in this paper makes real time, dynamical, continuous monitoring of dynamical situation of a bay possible.