Lateral gas transport in soil adjacent to an old landfill: factors governing gas migration

摘要

Field experiments investigating lateral gas transport in soil adjacent to an old landfill in Denmark during a one- year period were conducted. A significant seasonal variation, with low concentrations of methane and high concentrations of carbon dioxide in the summer, caused by methane oxidation was observed. There was a good correlation between pressure above the barometric pressure and he methane concentration in the soil, indicating that advective flow was the controlling process.