A Correction Method for Early Warning Strength of Ocean Isolated Internal Waves

A correction method and isolated technology, applied in open-air water source survey, instrument, surveying and mapping and navigation, etc., can solve the problem of low accuracy of early warning intensity of isolated internal waves in the ocean, and achieve the effect of eliminating observation errors and improving accuracy

CN112683245BActive Publication Date: 2021-11-30GUANGZHOU MARINE GEOLOGICAL SURVEY +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-11-30

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Abstract

The invention discloses a method for correcting the early warning strength of an isolated internal wave in the ocean, which includes the following steps: Step 1: Obtain the relative flow velocity of the ocean current relative to the buoy observation platform at different times and different layers at the position point of the buoy observation platform, and sequentially perform relative flow velocities Quality control and removal of background ocean current information to obtain relative velocity; Step 2: Obtain the moving velocity of the buoy observation platform, and superimpose the moving velocity and relative velocity to obtain the real ocean current velocity; Step 3: Judge whether there is an internal wave, if there is an internal wave, continue to execute, otherwise end the processing or jump to step 1; step 4: correct the ocean current velocity, and output the corrected ocean isolated internal wave information, the corrected ocean isolated internal wave information includes ocean The time, intensity, depth and propagation phase velocity of isolated internal waves. The invention can eliminate the observation error caused by the drift of the instrument, and improve the precision of the early warning intensity of the isolated internal wave.
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Description

technical field

[0001] The invention relates to the technical field of marine monitoring, in particular to a method for correcting early warning strength of isolated internal waves in the ocean. Background technique

[0002] The isolated internal wave of the ocean (also referred to as the isolated internal wave for short) belongs to one type of internal ocean wave. Between hundreds of meters and tens of kilometers, it belongs to the small-scale movement of the ocean. The instantaneous strong currents caused by isolated oceanic internal waves occur at all water depths, which is a potential threat to the safety of ocean engineering operations. Therefore, it is necessary to provide early warning of isolated oceanic internal waves to improve operational safety.

[0003] At present, there are related early warning programs for the observation of isolated internal waves in the ocean, such as Chinese invention patent applications with application numbers 201210578674.0, 2011101474...

Examples

Embodiment Construction

[0055] Below, the present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0056] Such as Figure 1-Figure 5 As shown, an ocean isolated internal wave early warning strength correction method includes the following steps:

[0057] Step 1: Obtain the relative flow velocity V of the ocean current relative to the buoy observation platform at different times t and different layers q at the location of the buoy observation platform t,q , for the relative velocity V t,q Carry out quality control and remove background ocean current information in turn, and get relative flow velocity V′ after quality control t,q , after removing the background ocean current information, the relative velocity V″ t,q . Among them, the relative velocity V t,q It can be obtained by measuring with an ocean current velocity meter, which can use an acoustic Doppler current profiler (ADCP). In this embodiment, an ADCP with a sampling rate of 3...