摘要
利用卫星遥感对同一地区重复成像的特点，采用从港湾不同时相的影像中提取不同潮位的水域面积的方法，建立潮位面算式和采用分层求和的方法，建立沉积参量算式。利用沉积参量算式和潮位面算式计算了海口港两个不同时段的0m以浅的沉积参量：1965～1984年时段沉积总量为4.59×106m3，沉积速率为2．4×105m3／a；1984～1990年时段，沉积总量为-8．4×105m3，沉积速率为-1．4×105m3/a。
By making use of the distinguishing features of repetitive imagery of the same area by satellite remote sensing,a method of extracting water areas at different tide levels from the images of bays at different times was adopted to establish a calculation model for tidal surface and a method of finding a sum by layers was used to establish a calculating model for the deposition parameter. Moreover,by making use of calculation model for the deposition parameter and of that for tide level,the deposition parameter for the sea area shalower than 0m was calculated for Haikou Bay at two different periods of time:during the period of 1965 to 1984 the total amount of deposits was 4. 59 ×106m3,and the sedimentation rate was 2. 4 ×105m3/a; during the period from 1984 to 1990, the total amount of deposits was -8. 4×105m3 and the sedimentation rate was - 1. 4 ×105m3/a.
出处
《海岸工程》
1997年第3期26-31,共6页
Coastal Engineering
