Fig. 3: Simulation results from Case A (base case).
a Seafloor temperature forcing. Simulation output for high permeability sediments dominated by matrix flow are shown in (b, c), medium permeability sediments with comparably low flow are shown in (d, e) and low permeability sediments dominated by flow through hydraulic fractures are shown in (f, g). CH4 gas concentration within the sediment pore space is shown as a function of simulation time (b, d, f) with the red contour marking the depth boundaries of the hydrate deposit thinning with time due to the ongoing hydrate dissociation. Cumulative gas release at the seafloor (solid blue), cumulative AOM (solid red) are shown as functions of time (c, e, g).
