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Modeling of Accidental Oil Spills at Different Phases of LNG Terminal Construction

机译:LNG终端施工不同阶段意外漏油的建模

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摘要

Accidental oil spills not only deteriorate biodiversity but also cause immediate threats to coastal environments. This study quantitatively investigates the initial dispersion of spilled oil using the environmental fluid dynamics code (EFDC) model, loosely coupled with an endorsed oil spill model (MEDSLIK-II) accounting for time-dependent advection, diffusion, and physiochemical weathering of the surface oil slick. Focusing on local contributing factors (i.e., construction activities) to oil dispersion, the current model is applied to likely oil spills occurring at three different phases of the Songdo LNG terminal construction on a reclaimed site in South Korea. Applied phases pose detailed ship collision scenarios generated based on a proposed construction plan of the terminal. The effects of permeable revetments, required for reclamation, on the currents were also investigated and applied in subsequent oil spill modeling. For each scenario, the simulated results showed distinct patterns in the advection, dispersion, and transformation of the oil slick. Oil absorption into the coast, which causes immense damage to the coastal communities, is found to be highly dependent on the tidal currents, volume of oil spilled, and nearby construction activities.
机译:意外漏油不仅恶化了生物多样性,而且还导致沿海环境的立即威胁。本研究定量地使用环境流体动力学代码(EFDC)模型来调查溢油的初始分散,松散地与附近的漏油模型(Medslik-II)核算了地表油的时间依赖性的平流,扩散和理化风化光滑。专注于局部贡献因素(即,建筑活动)到石油分散,目前的模型应用于在韩国的回收站上的Songdo LNG终端建设中发生的三个不同阶段发生的漏油。应用阶段基于终端的建议结构产生的详细船舶碰撞场景。还研究了填海剂所需的渗透性修道院的影响,并应用于随后的漏油模拟中的电流。对于每种情况,模拟结果显示出油气光滑的平流,分散和转化中的不同模式。发现沿海社区造成巨大损害的海岸吸油,发现高度依赖于潮流,溢出量和附近的施工活动。

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