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A method for estimating the risk of jellyfish injury

A jellyfish and risk technology, applied in the field of nearshore jellyfish simulation and early warning, can solve problems such as lack of research on jellyfish early warning models, and achieve the effect of reducing the probability of jellyfish hurting people

Active Publication Date: 2017-12-19
THE FIRST INST OF OCEANOGRAPHY SOA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no effective early warning mechanism for offshore bathing beaches, and research on early warning models for jellyfish is extremely scarce

Method used

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  • A method for estimating the risk of jellyfish injury
  • A method for estimating the risk of jellyfish injury
  • A method for estimating the risk of jellyfish injury

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] exist figure 2 Under the values ​​shown, that is, Swimmer velocity=0.3, Abundance=10, Jellyfishvelocity=0.075, Observation time=180, Flow velocity=0.7, Diameter=0.35, the model calculates that the probability of jellyfish wounding is 30.8%, meeting the evacuation standard , Therefore, the baths should evacuate tourists and close immediately, and tourists are prohibited from entering.

Embodiment 2

[0081] Values: Swimmer velocity=0.3, Abundance=1, Jellyfish velocity=0.075, Observation time=180, Flow velocity=0.3, Diameter=0.35, the probability of jellyfish injury is 0.6%, the warning standard has not been reached, and the bathing place can operate normally .

Embodiment 3

[0083] When the values ​​are: Swimmer velocity=0.3, Abundance=5, Jellyfish velocity=0.075, Observation time=180, Flow velocity=0.3, Diameter=0.35, the probability of jellyfish injury is 6.8%, reaching the warning standard.

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PUM

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Abstract

The invention relates to a method for estimating the risk of jellyfish injury, which includes: (1) storing the spatial position of the tourist with a state matrix hp, at the central position (i, j) of the tourist, hp (i, j)=1, and the rest The position is hp=0 (2) calculate the expected number of jellyfish in the research area; (3) use the state matrix fp to store the spatial position of the jellyfish, the grid (i,j) where the jellyfish appears, then fp(i,j)=1 ; The grid (i, j) where jellyfish does not appear, then fp(i, j) = 0; (4) Determine the local rules; (5) Determine the direction of the water flow and wind speed in the research area to point to the shore; (6) Determine the tourists The active area is the observation area H; (7) determine the update time; (8) determine the asynchronous update; (9) implement the algorithm in (1)-(8) based on MATLAB or Fortran, the frequency of jellyfish wounding is close to that of jellyfish (10) Give early warning instructions to bathing places according to early warning standards. The method of the invention can simulate the probability of jellyfish wounding, evaluate the risk of jellyfish wounding, and give bathing places early warning instructions according to early warning standards, thereby rationally managing bathing places and greatly reducing the probability of jellyfish wounding people.

Description

technical field [0001] The invention relates to the field of coastal management, in particular to a near-shore jellyfish simulation and early warning technology. Background technique [0002] In recent years, jellyfish have multiplied in large numbers in sea areas around the world, posing a huge threat to the life safety of nearshore tourists, and reports of jellyfish hurting people are common. At present, there is no effective early warning mechanism for offshore bathing beaches, and research on early warning models for jellyfish is extremely scarce. A reasonable jellyfish early warning model is just an indispensable part of bathing beach early warning, and it has very important practical significance for rational management of inshore bathing beaches and reduction of casualties. Contents of the invention [0003] According to the above disadvantages, the present invention provides a method for estimating the risk of jellyfish injury, by which the probability of jellyfis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 石洪华刘永志郭振池源张学雷
Owner THE FIRST INST OF OCEANOGRAPHY SOA
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