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Map showing the depth to the base of the deepest ice-bearing permafrost as determined from well logs, North Slope, Alaska Map showing the depth to the base of the deepest ice-bearing permafrost as determined from well logs, North Slope, Alaska
Because gas hydrates from within a limited temperature range, subsurface equilibrium temperature data are necessary to calculate the depth and thickness of the gas-hydrate stability field. Acquiring these data is difficult because drilling activity often disrupts equilibrium temperatures in the subsurface, and a well mush lie undisturbed until thermal equilibrium is reestablished...