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Method for measuring dissolved oxygen flux of marine near-bottom boundary layer

A near-bottom boundary layer and flux measurement technology, applied in the direction of measuring devices, fluid velocity measurement, velocity/acceleration/shock measurement, etc., can solve the problems of large consumption, inconvenient calculation of dissolved oxygen flux, and low efficiency, and achieve The effect of improving accuracy

Inactive Publication Date: 2019-01-15
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

The current observation method is inefficient, consumes a lot, and the synchronization between the flow rate and dissolved oxygen observation is poor at this stage. At the same time, it is not easy to calculate the dissolved oxygen flux. Method for measuring dissolved oxygen fluxes in the near-bottom boundary layer with simultaneous in situ observations of oxygen and flow rate data

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  • Method for measuring dissolved oxygen flux of marine near-bottom boundary layer
  • Method for measuring dissolved oxygen flux of marine near-bottom boundary layer
  • Method for measuring dissolved oxygen flux of marine near-bottom boundary layer

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Embodiment Construction

[0017] In order to make the purpose, technical solution and advantages of the present invention clearer, the implementation manners of the present invention will be further described in detail below.

[0018] A method for measuring dissolved oxygen flux in the ocean near-bottom boundary layer of the present invention aims at designing a reasonable observation device and simultaneously ensuring that the flow velocity and dissolved oxygen in the bottom-bottom boundary layer are effectively and reasonably synchronized without disturbing the water body It is convenient to calculate the dissolved oxygen flux through the ground observation. The specific implementation steps are as follows:

[0019] Set up a group of seabed-based observation devices, such as figure 1 As shown, the first is the selection of raw materials, which need to have the characteristics of seawater corrosion resistance. The materials of the observation device in the present invention are stainless steel tubes,...

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Abstract

The invention discloses a method for measuring the dissolved oxygen flux of a marine near-bottom boundary layer. The method comprises the steps of: (1), adjusting a seabed observation device and parameters; (2), arranging an observation device; (3), obtaining original high-frequency data; (4), pre-processing the original data, and calculating the pulsating quantity of the average flow speed and the average dissolved oxygen concentration; and (5), calculating the horizontal flux and the vertical flux by utilizing the pulsating quantity of the flow speed and the dissolved oxygen concentration calculated in the step (4). The observation device of the observation method comprises a battery compartment, an acoustic Doppler point type current meter and a needle type dissolved oxygen sensor. Themethod in the invention has the benefits that: observation is synchronously carried out through multiple sets of instruments; high-frequency data of the flow speed and the dissolved oxygen concentration in a water body is synchronously obtained in situ; long-time observation and storage are realized; the data resolution is high; and the dissolved oxygen level and the vertical flux can be obtainedmore accurately in a non-interfered water body environment.

Description

technical field [0001] The invention relates to the field of dissolved oxygen flux, in particular to a method and an observation device for measuring dissolved oxygen flux in the ocean near-bottom boundary layer. Background technique [0002] The dissolved oxygen DO in the ocean is an important biogenic element and a key factor for the maintenance and development of the marine ecosystem. If the dissolved oxygen concentration in the water body is too low, it will have adverse effects on the ecosystem. The content of dissolved oxygen in a water body is easily affected by the horizontal flow and vertical mixing of the water body, so it is necessary to accurately calculate the dissolved oxygen level and vertical flux. The current observation method is inefficient, consumes a lot, and the synchronization between the flow rate and dissolved oxygen observation is poor at this stage. At the same time, it is not easy to calculate the dissolved oxygen flux. A method for measuring dis...

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Application Information

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IPC IPC(8): G01N33/18G01P5/24G01D21/02
CPCG01D21/02G01N33/18G01P5/241
Inventor 孙群赵紫涵李子琳乌伊寒
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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