Abstract The unsaturated zone is a globally important, dynamic water store, which affects resources, agriculture and pollutant transport. Despite this, the magnitude of storage remains highly uncertain. This work provides first global estimates this store (1.0 x10 5 km 3 ) in comparison to recent modern groundwater (3.5x10 ), before presenting roadmap for improved representation hydrological mo...

Understanding infiltration pathways throughout the different compartments of karst systems (soil-epikarst-unsaturated zone-saturated zone) is vital to assess recharge processes, vulnerability pollution, and general hydrogeological functioning these kind aquifers. To gain deeper insight into soil-water-rock hydrogeochemical processes occurring vertically hierarchized aquifer evaluate applicabili...

The considerable increase in the leachate infiltration rate through Oulad Berja landfill as well agricultural activities Mnasra region have a detrimental effect on quality of groundwater. percolation unsaturated zone soil, towards water table, could serious consequences and environment general. Groundwater is only source drinking supply for rural population zone. As part assessment wells region...

(1) Airflow is induced in the subsurface by applying a pressure gradient through vertical or horizontal wells or horizontal trenches. In SVE, this is usually accomplished by withdrawal, rather than injection, of air. The SVE gas flow increases rates of contaminant mass transfer to air in the unsaturated zone by evaporation of NAPL, volatilization of contaminants dissolved in pore water, and des...