Figure 1:

Phase Diagram for System Methane Clathrate-Gas-Water as a function of Temperature and Depth (Pressure).

Physical-chemical data recalculated for after Dickens and Quinby-Hunt (1994, p. 2115-2118).
Fresh Wtr:
T "deg Celsius"=[-3665/(Log (Z"meters"/10) -13.81)]-298
Sea Wtr:
T "deg Celsius"=[-3519/(Log (Z"meters"/10) -13.34)]-298
for Z"meters"/10 = pressure in bars.

Hydrographic data after van Riel (1932) See Table 1 for additional hydrographic data for other SouthEast Asian basins.