When is the climax tomorrow?
Generally speaking, the interval between high tide and low tide is 6 hours, and there can be two low tide and high tide every day. Generally, it will last for about an hour after the high tide, and then it will gradually ebb.
Low tide usually refers to the process of the sea surface falling from high tide to low tide. The cause of low tide is related to both the moon and the sun. When the sea level drops to the lowest position, the sea level is in equilibrium for a short time and the tide stops.
Low tide utilization
Using low tide beach as sand mining area
Various studies show that a large number of sediments are deposited in low tide shoals. In addition, waves and tidal currents raze these shoals to the ground, and the quality of sediment deposition on these shoals will be as good as or better than that of adjacent beaches. Many projects obtain maintenance sand from low tide shoals. Most of these projects have been effectively completed, and other projects suggested using ebb shoal sand, but they were rejected by the regulatory authorities or other relevant political parties because it might have a negative impact on the surrounding coastline.
The effective change of wave conditions is caused by the propagation of waves to the excavation depth area, which leads to the change of equilibrium profile, and there are substantial changes in water depth in some ebb shoals, which also exists. In addition, there is a consensus on the natural beach system, that is, low tide shoals are the only way to transport sediment. If sediment is extracted from this path, it is necessary to fill the excavation area after sand extraction with sediment to restore the function of sediment transportation path.