REVIEW OF GREENHOUSE GAS EMISSIONS FROM THE ...

ebullition of methane and dissolved methane will be oxidised before reaching the watersurface.The only remaining escape route for methane in this region is degassing below the powerstation. It is, however, impossible to judge weather this is a real risk since the hydraulics ofreservoirs in this part of the world has not been modelled. Before this has been done one canonly speculate what design modifications that could reduce methane emissions. Surfaceintakes would definitely do the job, but pose practical difficulties. Alternatively, one couldforce well aerated surface water to a bottom intake by installing a shaft or a screen thatseparates the water masses.10