Applied Coastal Oceanography
oil spills
Case studies:
exxon
valdez
the
north cape
clean up technologies
On the Water
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Boom/sweepers/skimmers
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Primarily to deflect and collect
oil
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Used on water or just below
it
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Booms needs constant attention
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Great amount of manpower is
needed
-
collecting
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cleaning
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transporting
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disposing
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Burning
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Very effective
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Dangerous to marine life
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The effects of burning are better
then having an oil spill in the water
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Dispersants
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Are used to disperse the oil
in great amounts of water
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Much like watering down an alcoholic
drink to reduce the effects of it
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It does well in keeping oil
off the beaches
On the Shore
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Chemical Cleaning
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The use of Corexit
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Difficulty collecting the chemical
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Not very successful
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Hot Water and High Pressure
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One of the most common clean-up
tactics
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Became standard shoreline treatment
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Downside was that it killed
off much of the life on the shoreline
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Before choosing this method,
responders must take into consideration that any damage from the treatment
is acceptable based on the potential threat of oil
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Manual Treatment
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Used where there was only a
little amount of oil
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Manual treatments to pick up
oil
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shovels
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rakes
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absorbent material
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hands
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Mechanical Treatment
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The use of machines to remove
oil
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Included front-end loaders,
tractors, and other mechanical units
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It was decided that the effects
of the machines were worse than that of the oil
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Biological Treatment
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Bioremediation - in situ
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oil degradation by oil-degrading
microorganisms
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addition of nutrients (fertilizer)
to increase microbial growth
-
effective to "polish" contaminated
site
lessons learned - prevention
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Ship Design - cost is a concern
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Double Hull Ships
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Leak Detection and Tank Overfill
Devices
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Pressure monitors
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Transportation
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Tanker tug - Escort Requirements
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only mandatory regulation
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Training and Certification