Surface trajectories of oil transport along the Northern Coastline of the Gulf of Mexico
Surface trajectories of oil transport along the Northern Coastline of the Gulf of Mexico
复制标题
DOI：
10.1016/j.csr.2012.03.015
复制
发表时间：
2012-06-01
影响因子：
2.3
通讯作者：
Twilley, R. R.
中科院分区：
文献类型：
--
作者：
Dietrich, J. C.;Trahan, C. J.;Twilley, R. R.
在2010年春季深水地平线钻井平台被摧毁后，墨西哥湾北方受到马孔多油井漏油的威胁。紧急救援人员对近岸的石油运输感到担忧，它立即威胁到从路易斯安那州到佛罗里达的渔业沃茨和海岸线。在这一地区，石油的流动受到不同宽度的大陆架、突出的密西西比河三角洲、路易斯安那州南部的沼泽和河口以及保护海岸线的浅滩和屏障岛的影响。运输预测需要基于物理的计算模型和高分辨率网格，代表在深水中的环流，在大陆架上，并在复杂的近岸environment.This工作适用于耦合SWAN + ADCIRC模式的高分辨率计算网格，以模拟当前的速度场的大陆架，近岸和沼泽地区的时间，石油是可见的海湾表面。SWAN + ADCIRC模拟考虑了潮汐、河流流量、风和风驱动波浪的影响。一个高效的拉格朗日粒子输运模型被用来模拟油的表面轨迹。运输模型考虑了风和海流的扩散和平流。运输评估使用2周长的卫星图像序列。在这两个时期，SWAN + ADCIRC流场单独似乎比包括直接风力时更成功地移动石油。此外，假设石油运输被认为是在两个飓风的情况。如果飓风在漏油活跃时对北方海湾造成严重影响，根据风暴相对于漏油位置的路径，石油将进一步进入路易斯安那州南部的沼泽，或者沿着沿着大陆架向德克萨斯州移动，而不是在漏油期间实际发生的情况。爱思唯尔有限公司出版
After the destruction of the Deepwater Horizon drilling platform during the spring of 2010, the northern Gulf of Mexico was threatened by an oil spill from the Macondo well. Emergency responders were concerned about oil transport in the nearshore, where it threatened immediately the fishing waters and coastline from Louisiana to Florida. In this region, oil movement was influenced by a continental shelf with varying width, the protruding Mississippi River delta, the marshes and bayou of southern Louisiana, and the shallow sounds and barrier islands that protect the coastline. Transport forecasts require physics-based computational models and nigh-resolution meshes that represent the circulation in deep water, on the continental shelf, and within the complex nearshore environment.This work applies the coupled SWAN + ADCIRC model on a high-resolution computational mesh to simulate the current velocity field on the continental shelf, nearshore and marsh areas during the time that oil was visible on the surface of the Gulf. The SWAN + ADCIRC simulations account for the influence of tides, riverine discharge, winds and wind-driven waves. A highly efficient Lagrangian particle transport model is employed to simulate the surface trajectories of the oil. The transport model accounts for dispersion and advection by wind and currents. Transport is evaluated using 2-week long sequences of satellite images. During both periods, the SWAN + ADCIRC current fields alone appeared to be more successful moving the oil than when direct wind forcing was included. In addition, hypothetical oil transport is considered during two hurricane scenarios. Had a hurricane significantly impacted the northern Gulf while the spill was active, depending on the track of the storm relative to the spill location, oil would have moved farther into the marshes of southern Louisiana or farther along the shelf toward Texas than actually occurred during the spill. Published by Elsevier Ltd.