Method for calculating tide-bound water level by utilizing high tide and low tide

Abstract

The invention discloses a method for calculating a tide-bound water level by using a high tide and a low tide. The method comprises the following steps of: 1) acquiring tide levels and tide time sequences of the high tide and the low tide; 2) calculating ebb tide duration, rising tide duration and a tidal range sequence, and calculating average rising tide duration, average ebb tide duration and high tide levels, low tide levels and tidal ranges of different cumulative frequencies; 3) deducing a characteristic tide level process function of a specific cumulative frequency, and drawing a characteristic tide level process line; and 4) reading the tide-bound water level of a specific time length through a tide level process function or a process line, wherein the water level is the tide-bound water level of the time length guarantee rate. Only high and low tide levels and tide duration data need to be collected, and hour-by-hour data do not need to be collected; the tide-bound water level can be solved by adopting a trigonometric function formula, and the method is simple and easy to implement; the calculation precision is consistent with that of the existing method; meanwhile, the method for solving the tide-bound water level can adapt to sea areas where detailed hourly tide level data are difficult to collect.

Description

technical field [0001] The invention relates to the technical field of port construction engineering, in particular to a method for obtaining tidal water levels. Background technique [0002] For near-shore projects such as ports and waterways, the tidal water level is one of the important design parameters. In the current technology, the calculation steps are as follows: (1) first determine the duration required for riding the tide according to the time of the ship entering and leaving the port; The tide level value at time, use the tide level value as the tide level sample to draw the cumulative frequency curve, and select the required cumulative frequency tide level value on the tide level cumulative frequency curve. [0003] The calculation result of this method is accurate, but there are two difficulties. One is the difficulty of data collection. The data based on this method needs to be able to draw the tide level process line. The time accuracy of the data should no...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is to provide a method for calculating the tidal water level by using high and low tides to overcome the difficult problem of data collection. It does not need to collect hourly tide level data, only need to collect high tide and The tide level and tide time data of the low tide are enough; at the same time, it also overcomes the calculation difficulties. The calculation of the elapsed tide level can be realized by simply solving trigonometric functions, without the need for programming iterative calculations

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