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Internal wave detection method based on drift buoy

A technology of drifting buoys and detection methods, applied in the field of internal wave detection based on drifting buoys, can solve the problems of large climate impact, difficult deployment, high cost, etc., achieve good stability, overcome high cost, and low cost

Inactive Publication Date: 2019-07-05
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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Problems solved by technology

[0005] The main purpose of the present invention is to overcome the deficiency of existing internal wave detection method, propose a kind of internal wave detection method based on drifting buoy, utilize the mobile platform (such as drifting buoy etc.) that can record position information to detect internal wave, solve Existing detection methods have problems such as high cost, difficulty in deployment, and high impact of climate

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  • Internal wave detection method based on drift buoy
  • Internal wave detection method based on drift buoy
  • Internal wave detection method based on drift buoy

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] The specific embodiment of the present invention provides a method for directly measuring ocean internal waves by using a mobile platform such as a drifting buoy. Taking the drifting buoy as an example, the drifting buoy is placed on the sea surface and floats freely with the ocean current. If there is an internal wave passing by, its trajectory can be used to retrieve key fluctuation information such as the wave speed, wave direction, and amplitude of the internal wave, which can be used for oil platforms and naval activities. etc. to provide security. The internal wave detection method based on drifting buoys provided by the present invention is mainly divided into two parts. First, the theoretical derivation is carried out to prove that the trajectory of the buoy moving under the influence of internal waves is approximately elliptical...

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Abstract

The invention discloses an internal wave detection method based on a drift buoy. The internal wave detection method comprises the following steps of proving that the moving track of the buoy under theinfluence of the internal wave approximates to an ellipse through internal wave mechanics, using a least square method to perform ellipse fitting on coordinate points of the moving track, wherein thelong axis and the inclination angle of the obtained ellipse are in a certain function relation with the amplitude and the propagation direction of the internal wave, so that a function relation of the influence of the internal wave on the ocean temperature, the salinity and the flow velocity profile is obtained, and monitoring and early warning of the ocean internal wave are realized.

Description

technical field [0001] The invention relates to the technical field of ocean monitoring, in particular to an internal wave detection method based on a drifting buoy. Background technique [0002] Internal ocean waves are boundary waves formed in seawater due to the density difference in the vertical direction. Internal wave is one of the important research fields in the field of oceanography. It is closely related to major issues such as climate, resources, and environment. It involves many fields such as ocean circulation, ocean engineering, ocean acoustics, and marine environment. level. [0003] Ocean internal waves will cause serious interference to offshore platforms, submarine activities, underwater acoustic communications, etc., so the detection of ocean internal waves is particularly important. At present, the observation methods of internal waves mainly include: satellite observation, submerged buoy and other anchor observations, and navigation observations. Howe...

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Application Information

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IPC IPC(8): G01C13/00G01M10/00
CPCG01C13/002G01M10/00
Inventor 李强郑修宇张晓华李丰果古锦韬
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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