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dc.contributor.authorCoffin, Richard B.
dc.contributor.authorSmith, Joseph P.
dc.date.accessioned2021-10-28T19:17:33Z
dc.date.available2021-10-28T19:17:33Z
dc.date.issued2014-09-23
dc.identifier.citationSmith, J.P. and Coffin, R.B., 2014. Methane flux and authigenic carbonate in shallow sediments overlying methane hydrate bearing strata in Alaminos Canyon, Gulf of Mexico. Energies, 7(9), pp.6118-6141.en_US
dc.identifier.urihttps://hdl.handle.net/1969.6/89923
dc.description.abstractIn June 2007 sediment cores were collected in Alaminos Canyon, Gulf of Mexico across a series of seismic data profiles indicating rapid transitions between the presence of methane hydrates and vertical gas flux. Vertical profiles of dissolved sulfate, chloride, calcium, magnesium, and dissolved inorganic carbon (DIC) concentrations in porewaters, headspace methane, and solid phase carbonate concentrations were measured at each core location to investigate the cycling of methane-derived carbon in shallow sediments overlying the hydrate bearing strata. When integrated with stable carbon isotope ratios of DIC, geochemical results suggest a significant fraction of the methane flux at this site is cycled into the inorganic carbon pool. The incorporation of methane-derived carbon into dissolved and solid inorganic carbon phases represents a significant sink in local carbon cycling and plays a role in regulating the flux of methane to the overlying water column at Alaminos Canyon. Targeted, high-resolution geochemical characterization of the biogeochemical cycling of methane-derived carbon in shallow sediments overlying hydrate bearing strata like those in Alaminos Canyon is critical to quantifying methane flux and estimating methane hydrate distributions in gas hydrate bearing marine sediments.en_US
dc.language.isoen_USen_US
dc.publisherMDPIen_US
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectmethaneen_US
dc.subjecthydrateen_US
dc.subjectGulf of mexicoen_US
dc.subjectAlaminosen_US
dc.subjectAlaminos Canyonen_US
dc.subjectSedimentsen_US
dc.subjectporewateren_US
dc.subjectCarbon cyclingen_US
dc.titleMethane flux and authigenic carbonate in shallow sediments overlying methane hydrate bearing strata in Alaminos Canyon, Gulf of Mexicoen_US
dc.typeArticleen_US
dc.identifier.doihttps://doi.org/10.3390/en7096118


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Attribution 4.0 International
Except where otherwise noted, this item's license is described as Attribution 4.0 International