We estimate the concentration of gas hydrate and free gas at an area located to the north of the Knipovich Ridge (western Svalbard margin). The method is based on P-wave velocities computed by reflection tomography applied to multicomponent ocean-bottom seismometer data. The tomographic velocity field is fitted to theoretical velocities obtained from a poro-elastic model based on a Biot-type approach (the interaction between the rock frame, gas hydrate and fluid is modelled from first physical principles). We obtain average hydrate concentrations of 7% and maximum free-gas saturations of 0.4% and 9%, depending on the saturation model. © 2005 European Association of Geoscientists & Engineers.
CITATION STYLE
Carcione, J. M., Gei, D., Rossi, G., & Madrussani, G. (2005). Estimation of gas-hydrate concentration and free-gas saturation at the Norwegian-Svalbard continental margin. Geophysical Prospecting, 53(6), 803–810. https://doi.org/10.1111/j.1365-2478.2005.00502.x
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