Measurements of the fate of gas hydrates during transit through the ocean water column.

Brewer, P. G., Paull, C., Peltzer, E. T., Ussler, W., Rehder, Gregor and Friedrich, G. (2002) Measurements of the fate of gas hydrates during transit through the ocean water column. Open Access Geophysical Research Letters, 29 (22). p. 2081. DOI 10.1029/2002GL014727.

[img]
Preview
Text
Brewer_et_al-2002-Geophysical_Research_Letters.pdf - Published Version

Download (178Kb) | Preview

Supplementary data:

Abstract

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.

Document Type: Article
Keywords: Gas hydrates, transit, ocean water columm
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-MG Marine Geosystems
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1029/2002GL014727
ISSN: 0094-8276
Date Deposited: 18 Feb 2008 17:25
Last Modified: 20 Feb 2018 08:14
URI: http://oceanrep.geomar.de/id/eprint/7768

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...