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Vertical CTD rosette casts sampling Gulf hydrocarbon plume.

Vertical CTD rosette casts sampling Gulf hydrocarbon plume.
Vertical CTD rosette casts sampling Gulf hydrocarbon plume.
Vertical CTD rosette casts sampling Gulf hydrocarbon plume.
Vertical CTD rosette casts sampling Gulf hydrocarbon plume.
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366768
Cook, John E.
Vertical CTD rosette casts sampling Gulf hydrocarbon plume.
Illustration
07/01/2010
Plume-VerticalCasting.jpg
Date is approximate.
Drawn for Chris Reddy's Deep Water Horizon oil spill research in the Gulf of Mexico.
Caption from Oceanus magazine, Vol. 48, No. 2, Pg. 33:
SAMPLING
The next step was to get samples of seawater directly from the plume to see what chemicals were in it. To do that, scientists lowered an instrument called a rosette on a cable to collect seawater. Sentry had outlined the location of the plume, and in successive casts, they lowered the rosette above, below, to the sides, and precisely within the plume. The researchers found that the plume contained only six of the thousands of possible hydrocarbon compounds in oil: benzene, toluene, ethylbenzene, and three types of xylenes.
Illustration by Jack Cook
© Woods Hole Oceanographic Institution
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