【摘要】 通过从遥感影像中提取的水域面积，结合潮汐资料建立纳潮量其式的方法，得到海口港1990年纳潮量为2．57×107m3，1984年为294×107m3，1965年为2．62×107m3。分析了决定纳期量的形态因子和潮差因子后，得出因海口港形态因子变化而引起纳潮量变化的趋势为：1965～1984年呈减小趋势，递减率为50×10－3；1984～1990年呈增加趋势，递增率为4．8×10－3。1984年前呈减小趋势的主要原因是海港泥沙自然淤积所致；1984年后对海口港进行疏浚，扩充港池，使平均低潮水域面积增加，是引起纳潮量增加的主导因素。更多还原

【Abstract】 Through the water areas extracted from remote sensing images and the combination of the methods for establishing the formula for calculating tidal influx with tidaldata, the tidal influx of Haikou Port was found to be 2. 57107 m3 in 1990, 2. 94×107m3in 1984 and 2. 62×107m3 in 1965, respectively. After ana1ysis of the morphological andtidal range factors which determine tidal influx, this paper presents the trend of thechanges in tidal influx caused by the changes in the morphological factors of the HaikouPort. It is found that a decreasing trend was shown with a decrement rate of 5.0×10-3during the period of 1965~1984, and an increasing trend with an incremental rate of 4. 8×10-3 during the period of 1984~1990. The main reason for the appearance of the decreasing trend before 1984 is the natural deposition and siltingsiup of the port sediments;after 1984, the dredging and expansion of Haikou Port which caused an increase in water area at the mean low tide are the leading factor which causes the increase in tidal influx.更多还原