Physics – Geophysics
Scientific paper
Feb 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3503611b&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 3, CiteID L03611
Physics
Geophysics
5
Marine Geology And Geophysics: Gas And Hydrate Systems, Geochemistry: Marine Geochemistry (4835, 4845, 4850), Marine Geology And Geophysics: Marine Sediments: Processes And Transport, Oceanography: General: Numerical Modeling (0545, 0560)
Scientific paper
We develop a relationship between the sulfate-methane transition (SMT) and average gas hydrate saturation (AGHS) for systems dominated by methane migration from deeper sources. The relationship is explained by a one-dimensional numerical model that simulates gas hydrate accumulation in marine sediments. Higher methane fluxes result in shallow SMT depths and high AGHS, while lower methane fluxes result in deep SMTs and low AGHS. We also generalize the variation between AGHS and scaled SMT depth, a procedure that aids prediction of AGHS at different sites from observations of the SMT, such as along Cascadia Margin.
Bhatnagar Gaurav
Chapman Walter G.
Dickens Gerald R.
Dugan Brandon
Hirasaki George J.
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