丰、枯水年磨刀门水道盐水上溯运动规律对比

通过一维纵向逐时咸界图的方法, 得到了磨刀门水道丰、枯水年的盐水运动规律图.对比分析了不同年份不同上游径流对磨刀门水道盐水上溯运动规律的影响. 分析表明, 丰、枯水年不同的上游径流量将改变磨刀门水道盐水入侵的上溯距离和上溯速度的快慢, 造成程度不同的咸潮灾害. 磨刀门水道中盐水运动的半月及日周期性变化规律不受上游径流的影响,均为小潮期间盐水逐步上溯, 大潮期间盐水逐步退出. 上游径流量的大小只影响磨刀门水道盐水上溯运动的速度和距离远近, 不改变磨刀门水道中盐水上溯运动的半月周期规律. 

CONTRAST OF MOVEMENT LAW OF SALINE INTRUSION IN MODAOMEN WATERWAY IN THE WET YEAR AND THE DRY YEAR

The movement law of saline intrusion in the Modaomen waterway in the wet and dry years is obtained by the method of the figures of salinity borderline distribution (SBD). The effect of different runoffs in two years on the movement saline intrusion in the Modaomen waterway is contrasted. The different runoffs in the wet year and the dry year change the distance and the speed of the saline water movement, and cause the different saline intrusion disaster. The period law of the half-month for the saline water movement, which is that the saline water moves oscillating up during the neap tide and down during spring tide, is not affected by the different runoffs in the wet year and the dry year. The magnitude of upstream runoff only affects the distance and the speed of the saline water movement in the Modaomen waterway, but does not change the period law of the half-month for the saline water movement.