Accurate forecast method for water increase and decrease in water area inside bulwark

Abstract

The invention provides an accurate forecast method for water increase and decrease in a water area inside a bulwark. The method comprises the following steps: acquiring a database, observing a real-time tide level inside the bulwark by adopting a tide level sensor, and forming a measured tide level database; forecasting an astronomical tide level by adopting a harmonic analysis algorithm, and transmitting hourly astronomical forecast data into a harmonic analysis tide level database; observing the tidal current size of an entrance section of the bulwark by adopting a tidal current sensor so asto obtain tidal current data, acquiring the information, and performing water increase and decrease forecast over the next 24 hours by virtue of a fifth artificial neural network. According to the accurate forecast method for water increase and decrease in the water area inside the bulwark disclosed by the invention, the characteristics of the water area inside the bulwark are fully considered, and by introducing the observation sensor for tidal current of the entrance of the bulwark and the neural network for the tidal current of the entrance of the bulwark to forecast, accurate forecast ofthe water increase and decrease in the water area inside the bulwark is realized.

Description

technical field [0001] The invention relates to the field of water level prediction, in particular to an accurate prediction method for the increase or decrease of water in the inner water area of ​​a breakwater. Background technique [0002] Due to strong winds or sudden changes in air pressure and other factors, the phenomenon that the sea water level is greater or less than the normal water level is called increasing or decreasing water. Rise, that is, the phenomenon of water increase; at the same time, the water level on the leeward side drops, that is, the phenomenon of water reduction. [0003] Sudden changes in the air pressure field on the sea surface can also cause increases and decreases in water. When the wind causes the increase or decrease of water, the sea surface is inclined, and the inclined lake surface in turn blocks the drifting movement, and forms a compensating flow opposite to the drifting flow in the lower lake water. On deep water coasts, compensati...

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Problems solved by technology

[0016] 2. The meteorological factors selected by the existing technology only include air pressure, wind force, wind direction, precipitation, and water temperature. In the breakwater waters near the port, in addition to the above factors, the type, length, height, and water flow of the breakwater The influence of factors such as size on the increase and decrease of water inside the breakwater is obviously greater than the above factors, and the existing technology is insufficient in the accuracy of forecasting

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