Figure 4. Pressure induced methane hydrate dissociation. Temperature in the bath (solid black), at vessel/ sample interface (large dash), half radius (mixed long and short dashes), center (small dash), and pressure (gray) recorded in pressure-induced dissociation of 10 cm diameter, 11 cm long sand/hydrate sample. The gas produced is shown in the thick mixed dash line on the right half of the figure (read on left axis).