Track the Gulf Oil Spill - Interactive

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Tracking the Oil Spill in the Gulf

The totals for the amount of oil spilled are calculated beginning from the initial explosion at 10 p.m. on April 20. While both oil and gas are leaking from the well, the estimates here are only for the amount of oil. BP announced on May 21 that the fluid leaking was roughly half oil, half natural gas.

The “estimated extent” of the oil slick is an estimate by the National Oceanic and Atmospheric Administration of where oil is mostly likely to go based on wind and ocean current forecasts, as well as analysis of aerial photography and satellite imagery.

The “surveyed extent” show areas where oil was visible on the surface of the water during aerial surveys of the Gulf. The surveyed extents are not available every day and may be incomplete on some days because poor weather conditions prevented observation in some areas.

http://www.nytimes.com/interactive/2010/05/01/us/20100501-oil-spill-tracker.html

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