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Science 7 May 1999:
Vol. 284. no. 5416, pp. 943 - 945
DOI: 10.1126/science.284.5416.943
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Reports
Direct Experiments on the Ocean Disposal of Fossil Fuel CO2
Peter G. Brewer,
1*
Gernot Friederich,
1
Edward T. Peltzer,
1
Franklin M. Orr Jr.
2
Field experiments were conducted to test ideas for fossil fuel
carbon dioxide ocean disposal as a solid hydrate at depths ranging from
349 to 3627 meters and from 8° to 1.6°C. Hydrate formed instantly
from the gas phase at 349 meters but then decomposed rapidly in ambient
seawater. At 3627 meters, the seawater-carbon dioxide interface
rose rapidly because of massive hydrate formation, forcing spillover of
the liquid carbon dioxide from the container. A strong
barrier between the liquid carbon dioxide and interaction with the
sediments was observed. A pool of liquid carbon dioxide on the sea
floor would expand in volume more than four times, forming hydrate,
which will dissolve.
1 Monterey Bay Aquarium Research Institute,
Post Office Box 628, Moss Landing, CA 95039, USA.
2 School of Earth Sciences, Stanford University,
Stanford, CA 94305, USA.
*
To whom correspondence should be addressed. E-mail:
brpe{at}mbari.org
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