Review on airflow in unsaturated zones induced by natural forcings

摘要: [1] Subsurface airflow in unsaturated zones induced by natural forcings is of importance many environmental and engineering fields, such as remediation, water infiltration groundwater recharge, coastal soil aeration, mine tunnel ventilation, gas exchange between atmosphere. This review synthesizes the published literature on subsurface driven atmospheric pressure fluctuations, topographic effect, table infiltration. The present state knowledge concerning mechanisms, analytical numerical models, applications related to naturally occurring discussed. Airflow fluctuations studied most because remediation transport trace gases from atmosphere, which are very important understanding biogeochemical cycling global change. also an extensively investigated topic its implications rainfall recharge. areas it plays role ecological systems. effect least. However, has zone ventilation mines tunnels. Finally, similarities differences characteristics air compared future research efforts recommended.