Deep ocean current inversion method based on three-dimensional positive pressure shallow continental shelf model

Abstract

The invention discloses a deep ocean current inversion method based on a three-dimensional positive pressure shallow continental shelf model and belongs to the technical field of high-frequency groundwave radar remote sensing detection. The method comprises the following steps: adopting a three-dimensional nonlinear positive pressure shallow continental shelf mode of a normalized coordinate system, utilizing ocean surface current data detected by a high-frequency ground wave radar and considering a boundary problem of a complex terrain, performing parameterization on a physical process, simplifying a ocean control equation set, and establishing a three-dimensional network; solving discrete equations by adopting a difference method, and further inverting to acquire corresponding deep current data information, comprising the sub-steps: selecting the coordinate system; deriving control equations under the normalized coordinate system; performing parameterization on the physical process;solving the equations by an iterative method to acquire the deep current information; performing contrastive analysis on the measured data and the inversion result. According to the method disclosed by the invention, comparative test results show that a curve chart of the measured data and a curve chart of the inversion result have a similar overall trend, the inversion curve can reflect the overall trend of the deep ocean current change, and a motion law of ocean dynamics is met.

Description

technical field [0001] The invention relates to the technical field of high-frequency ground wave radar remote sensing detection, in particular to a deep ocean current inversion method based on a three-dimensional barotropic shallow sea continental shelf model. Background technique [0002] In order to obtain the movement information of the ocean current below the ocean surface, the existing technology adopts the method of directly contacting and measuring the water body, so to obtain the data of a large area of ​​water requires a considerable number of direct measuring instruments. This method has high requirements on the surrounding measurement environment, high cost and low detection efficiency. High-frequency ground wave radar remote sensing technology is a technology developed in the past 30 years to detect dynamic parameters of the ocean surface. It has a wide coverage and high detection accuracy and efficiency. However, due to the serious attenuation of electromagnet...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned technical problems, the technical solution adopted in the present invention is a deep ocean current inversion method based on a three-dimensional barotropic shallow-sea continental shelf model, which adopts a three-dimensional nonlinear barotropic shallow-sea continental shelf model with a normalized coordinate The ocean surface current data detected by the wave radar considers the boundary problem of complex terrain, parameterizes the physical process, simplifies the ocean governing equations, and then builds a three-dimensional grid, uses the difference method to solve the discrete equations and then inverts to obtain the corresponding deep flow data information, including the following steps:

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