Mathematics – Logic
Scientific paper
Nov 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29v..38b&link_type=abstract
Geophysical Research Letters, Volume 29, Issue 22, pp. 38-1, CiteID 2081, DOI 10.1029/2002GL014727
Mathematics
Logic
9
Oceanography: Biological And Chemical: Gases, Oceanography: Biological And Chemical: Carbon Cycling, Geochemistry: Marine Geochemistry (4835, 4850), Oceanography: General: Continental Shelf Processes, Global Change: Oceans (4203)
Scientific paper
We report on controlled experiments to document the fate of naturally occurring methane hydrate released from the sea floor (780 m, 4.3°C) by remotely operated vehicle (ROV) disturbance. Images of buoyant sediment-coated solids rising (~0.24 m/s) from the debris cloud, soon revealed clear crystals of methane hydrate as surficial material sloughed off. Decomposition and visible degassing began close to the predicted phase boundary, yet pieces initially of ~0.10 m size easily survived transit to the surface ocean. Smaller pieces dissolved or dissociated before reaching the surface ocean, yet effectively transferred gas to depths where atmospheric ventilation times are short relative to methane oxidation rates.
Brewer Peter G.
Friederich Gernot
Paull Charles
Peltzer Edward T.
Rehder Gregor
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