What are the tide tables in Dalian?

Note: 1. The Yellow Sea includes the waters around Dalian (along Binhai Road, Lushun South Road, Jinshitan and Dalian Bay).

2. The Bohai area is mainly along Lushun North Road (Daheishi, Chessboard Mill, Xiajiahezi, etc.). ).

3. The interval between two high tides in 24 hours a day is 12 hours, and the interval between two low tides is also 12 hours.

4. The time spent in the process of high tide and low tide is basically the same (6 hours, 12 minutes), and the tidal interval between two days is generally delayed by 48 minutes.

Because tides are the result of the moon's gravity and follow a fixed cycle, the tidal time will not change with the change of a year, so a tidal table is universal every year and does not need to be updated.

6. The tidal period is 15 days, so the tidal time on the first day and the sixteenth day is the same, and so on.

7. Tides can be divided into active floods and dead floods. An active flood season means that the tidal range changes greatly and the water flow is smooth. At this time, the fish are more active and easy to take the bait.

8. The news of death means that the tidal range has not changed much and the water flow is relatively poor. At this time, the fish are not very active and it is not easy to take the bait. Generally speaking, the spring tide is an active flood season; Small tides are stagnant floods; There are both active floods and dead floods in the middle tide.

Extended data:

Under the gravity of the moon and the sun, the ocean surface is periodic.

Wave phenomenon. Tides during the day and sun watchers at night are collectively called "tides". Generally, there are two ups and downs in a day and one ups and downs. Tidal waves in the open sea go up the river, causing tides downstream of the river. Yan Zhitui in the Northern Qi Dynasty wrote "Yan's Family Instructions for Returning to the Heart": "Who will save when the tide recedes?" Su Songzhe's "Hezi Station Snow Wave Zhai": "In front of the stone bank, the tide washes strawberry moss." The seventh poem of Liu Ji's Jiang Xing Miscellaneous Poems in Ming Dynasty: "Hannah Quinlivan should not let the thick ground crack, but should have the tide to help mulberry." Ye Shengtao's "Poor Sorrow": "Since the gambling dens are broken, the whole city is rumored that people come to see how bloggers are, and the market is like a tide."

Describe things with similar characteristics to tidal phenomena: tidal lane, tidal passenger flow, etc.

References:

Baidu encyclopedia-Huanghai Baidu encyclopedia-Bohai sea