Northwest pacific three-dimensional oil spill business emergency forecasting and evaluating system

Abstract

The invention discloses a northwest pacific three-dimensional oil spill business emergency forecasting and evaluating system. The system comprises an oil spill information rapid processing module, anenvironment information processing module, an oil spill transportation module, an oil spill weathering module, a data assimilation module, an ensemble forecasting module, a geographic information datamodule, a visual analysis module and a system control center module. According to the method, three-dimensional short-term and medium-and-long-term numerical simulation prediction of deep sea oil spill in the northwest Pacific Ocean sea area and application comparison of different vertical diffusion schemes can be realized under the consideration of the action of sea waves. Various kinds of oil source information and oil spill types can be preprocessed and predicted. An external forced field of the oil spill model can be optimized by utilizing field observation data and an optimal interpolation assimilation method in real time. Therefore, the forecasting accuracy is improved. An ensemble forecasting result can be provided. The system has important practical value for scientific research of marine ecological disaster prevention and reduction, design of an emergency response system of a management department and the like.

Description

technical field [0001] The invention relates to numerical simulation technology of drift and diffusion of offshore oil spills, in particular to short-term and mid-to-long-term prediction technology of three-dimensional numerical simulation in deep sea areas, and realizes the field of operational application in Northwest Pacific Ocean areas. Background technique [0002] In the existing studies on the simulation of oil spill transport and diffusion, the transport and spread of sea surface oil spills are mainly affected by sea surface wind field, ocean currents, waves and turbulence, while the transport and spread of underwater oil spills are mainly affected by sea current velocity and turbulence. effect 【80-89】 . Reed et al (1994a) 【90】 It is suggested that 3.5% of the wind speed is assigned to the oil film drift speed in the case of no breaking wave and light wind. However, when the wind speed increases, the spilled oil will be entrained into the water, and the shearing o...

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Problems solved by technology

[0006] Moreover, the vertical turbulent diffusion part of the existing 3D oil spill simulation is basically an empirical formula, and rarely considers the influence of the turbulent characteristics of the ocean current model itself on the oil spill diffusion, and the characteristics of the vertical turbulent diffusion itself of the oil spill itself.

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