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Deepwater Horizon Oil Spill

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Chathuri Gunasekera

on 18 December 2014

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Transcript of Deepwater Horizon Oil Spill

Deepwater Horizon Oil Spill
Oil Spill 2010
-The well Macondo exploded April 20, 2010
-Killed 11 people
-16,000 miles of coastline affected
-Macondo is approximately 41 miles off the coast of Louisiana
-It spilled about 4.9 million barrels
-Capped July 15, 2010
-The oil rig collapsed and sunk

Gulf Restoration
Gulf Ecosystem
- the gulf is home to very large and productive fisheries
-coastal wetlands serve as a vital habitat for numerous fish and wildlife species
- numerous species
-29 marine mammals
-5 endangered sea turtle
-49 shark

Cleanup Methods
Effects on the Ecosystem
Brown Pelican
-lives in Atlantic and Gulf coasts
-they feed by going into the water
-58% of all dead birds found were pelicans
-oil covers feathers
-they try to remove it by preening and then ingesting the oil
-the brown pelican and herring share an antagonistic relationship
Nitrogen Cycle
-groups of people combed through beaches, marshes, and barrier islands in July 2010
-BP has spent $698 million to help clean up the spill
-scientists are studying the species for damage and how they can fix it
-three phases of cleanup

-oil toxicity damage
-stranded sea turtles
-egg and larval organisms
-oil coats feathers
-650 dead dolphins
-causes numerous health problems

Years Later
-500 turtles found every year
-sperm whales have higher levels of metal that damage their DNA
-2.9 million pounds of sand searched and 85% did not contain oil
-90 miles of coast is still left to clean up
Containment Domes:
Relief Wells

Oil Containing Booms
Oil eating microbes
-the loss of large organisms raised nitrogen composition levels
-lack of nitrogen-fixing bacteria and nitrifying bacteria in the gulf
-the dead zone is caused by "excessive nutrient pollution from human activities coupled with other factors that deplete the oxygen required to support most marine life in bottom and near-bottom water. (NOAA)."

Last Major Oil Spill: Ixtoc I
-June 3, 1979
-also in the Gulf of Mexico
-3 million barrels of oil spilled
-162 miles of shore impacted
History of Oil Spills
After the initial explosion of Macondo
Ixtoc I in the bay after blowout
Underwater picture of the Gulf of Mexico
Sea turtle caught in oil
Brown pelican struggling with oil sodden wings
Helpers cleaning up oil from the beaches
Process of depleting oxygen
Dead sea animals washed up of beaches
Picture Citations
1. Macondo oil rig:http://www.eoearth.org/view/article/161185/
2. Ixtoc I: http://www.nature.com/news/2010/100714/full/466304a.html
3. Gulf of Mexico underwater: http://oceanservice.noaa.gov/news/features/june10/onms-deepwater.html
4. Sea turtle caught in oil: http://www.thinkgreenliveclean.com/2010/07/endangered-sea-turtles-threatened-by-oil-spill/
5. Brown Pelican: http://www.backyardchirper.com/blog/the-story-of-louisianas-oiled-brown-pelican/
6. Helpers raking beaches: http://galleryhip.com/gulf-coast-oil-spill-clean-up.html
7. Containment dome: http://www.nytimes.com/interactive/2010/05/25/us/20100525-topkill-diagram.html?
8. Relief wells: http://www.nola.com/news/gulf-oil-spill/index.ssf/2010/06/relief_well_progress_graphic.html
9. Oil containment booms: http://en.wikipedia.org/wiki/Boom_(containment)
10. Oil eating microbes: http://www.scientificamerican.com/slideshow/gulf-oil-eating-microbes-slide-show/
11. Dead sea turtle: http://news.nationalgeographic.com/news/2007/02/070207-sea-turtles.html
12. Hypoxia :http://www.gulfhypoxia.net/overview/
Full transcript