BBC News, May 7, 2010
Thousands of tonnes of oil have poured into the Gulf of Mexico after the disaster at the Deepwater Horizon oil rig over two weeks ago. But how does this leak compare with the largest offshore spills on record? The current size of the Deepwater Horizon spill is hard to measure exactly, but attempts can be made to estimate it.Based on oil flow calculations from the National Oceanic and Atmospheric Administration, Dr Simon Boxall, a marine pollution expert, says a total current spill can be estimated at about 7,000 to 10,000 tonnes of oil. (See factbox below for how this was worked out.) Read more...
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