Table 2 Physical Properties and T+H-GeoMech Simulation Parameters.

Sediment grain density [kg/m³]

2700^a

Permeability, k [m²]

10⁻¹⁷ to 10⁻¹⁴

Wet conductivity [W/mK]

1.21^a

Dry conductivity [W/mK]

0.34^a

Heat flow [W/m²]

0.04^b

Porosity

0.6^a

Initial seafloor temperature [^oC]

5

Seafloor depth [m]

520

Initial hydrate saturation, S_h [%]

5^a

Initial/boundary pore water salinity [%]

3.5^a

Gas composition

100% CH₄

Seafloor temperature increase [°C year⁻¹]

0.03 (over first 100 years)^a

Fracture Permeability [m²]

10^{−10 b}

Normalized overpressure threshold

1.0^b