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Nature Trajectory of Gulf Oil Spill: Oil Reaching Atlantic Coastline and Toward Europe (Computer Simulation

Discussion in 'Breaking News' started by spnadmin, Jul 14, 2010.

  1. spnadmin

    spnadmin United States
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    YouTube - HD version - The longterm fate of the oil spill in the Atlantic

    Long-Term Fate of Gulf Oil Spill: Computer Simulations Show Oil Reaching Up the Atlantic Coastline and Toward Europe

    ScienceDaily (July 6, 2010) — The possible spread of the oil spill from the Deepwater Horizon rig over the course of one year was studied in a series of computer simulations by a team of researchers from the School of Ocean and Earth Science and Technology (SOEST) at the University of Hawaii at Manoa. The simulations suggest that the coastlines near the Carolinas, Georgia, and Northern Florida could see the effects of the oil spill as early as October 2010, while the main branch of the subtropical gyre is likely to transport the oil film towards Europe, although strongly diluted.

    Eight million buoyant particles were released continuously from April 20 to September 17, 2010, at the location of the Deepwater Horizon oil rig. The release occurred in ocean flow data from simulations conducted with the high-resolution Ocean General Circulation Model for the Earth Simulator (OFES).

    "The paths of the particles were calculated in 8 typical OFES years over 360 days from the beginning of the spill," says Fabian Schloesser, a PhD student from the Department of Oceanography in SOEST, who worked on these simulations with Axel Timmermann and Oliver Elison Timm from the International Pacific Research Center, also in SOEST. "From these 8 typical years, 5 were selected to create an animation for which the calculated extent of the spill best matches current observational estimates."

    The dispersal of the particles does not capture such effects as oil coagulation, formation of tar *****, chemical and microbial degradation. Computed surface concentrations relative to the actual spill may therefore be overestimated. The animation, thus, is not a detailed, specific prediction, but rather a scenario that could help guide research and mitigation efforts.

    The animation shows the calculated surface particle concentrations for grid boxes about 10-km-by-10-km in size into April 2011. For an estimated flow of oil from the Deepwater Horizon of 50,000 barrels per day over a 150 day period, a concentration of e.g. 10 particles per grid box in the animation corresponds roughly to an oil volume of 2 cubic meters per 100 square kilometer.

    The oil spreads initially in the Gulf of Mexico, then enters the Loop Current and the narrow Florida Current, and finally the Gulf Stream. "After one year, about 20% of the particles initially released at the Deepwater Horizon location have been transported through the Straits of Florida and into the open Atlantic," explains Timmermann.

    This animation suggests that the coastlines near the Carolinas, Georgia, and Northern Florida could see the effects of the oil spill as early as October 2010. The main branch of the subtropical gyre is likely to transport the oil film towards Europe, although strongly diluted.

    The animation also shows that as the northeasterly winds intensify near Florida around October and November, the oil in the Atlantic moves closer to the eastern shores of the US, whereas it retreats from the western shores of Florida.

    The narrow, deep Straits of Florida force the Florida Current into a narrow channel, creating a tight bottleneck for the spreading of oil into the Atlantic. As the animation suggests, a filtering system in the narrowest spot of the Florida Current could mitigate the spreading of the oil film into the North Atlantic.

    This research was supported by the Japan Agency for Marine-Earth Science and Technology (JAMSTEC), NASA and NOAA through their sponsorship of the International Pacific Research Center in the School of Ocean and Earth Science and Technology at the University of Hawaii at Manoa

    Long-term fate of Gulf oil spill: Computer simulations show oil reaching up the Atlantic coastline and toward Europe
     

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  3. spnadmin

    spnadmin United States
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    Mai Harinder Kaur ji

    I know that you have been working toward raising worldwide awareness on one of your blogs about the international importance of this event, and transcontinental impact. I hope you can use some of this, either the video or the article, or both.

    One chapter in this story that intrigues me very much is the way the information is being understood in the United Kingdom, home base for British Petroleum. Facebook friends from the UK have been following my posts on facebook about this and have been very engaged in the story day to day. The Guardian has some of the most consistent and factual and incisive coverage, and has so from day one. Its coverage of the May Congressional hearings were excellent. There must be a lot of information on background, known in the UK, perhaps from the beginning of deep rig drilling in the North Sea under Margaret Thatcher that sticks to the current Gulf Oil saga. I really want to know what it is. Only a small percentage of the commentary coming from UK supports BP -- the rest is extremely critical of the corporate decision making surrounding the disaster in the Gulf of Mexico. What is the general opinion of BP's safety record surrounding operations in the North Sea? Is the British regulatory climate more stringent than in the US/ What is the general opinion of continued government support of this company? Are there any striking parallels with business as usual and government relations between BP and the US?
     

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