ST. PETERSBURG, FL 鈥� This study led by Brad Rosenheim shows that the isotopic signature of oil is still present in the water column of the N. Gulf of Mexico 4 years after the spill. The chemistry of the oil may have changed through biosynthesis or degradation, however the isotope signature remains. The fascinating part of this observation is the physical oceanography question of how the signature remains in the water column for such a long time despite currents and waves that would suggest otherwise.
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Cycling of carbon from the Deepwater Horizon in the Gulf of Mexico
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