… of radium (Ra-226) in geological subsurface media, sheds light on its periodic release into
… source for subsurface gas flows and for cyclic exhalation into the soil-atmosphere interface. …

… condition, in the case of water flow over a porous medium, it does not. Therefore coupled …
of the hydrologic cycle, namely the atmospheric or oceanic, the surface, and the subsurface, …

… 4, for a typical tidal cycle. It is seen that, corresponding to the periodical tidal … In conclusion,
the porous media method was found to be most flexible of the three methods considered for …

… under cyclic flow regime. A three-dimensional numerical model for groundwater flow and …
The operation scenario consists of cyclic injection and recovery and four periods per year to …

… These processes involve injection of specific nutrients into the subsurface to stimulate …
porous subsurface formations. In flow systems, bacterial transport through porous media has been …

… flow (HF) and vertical flow (VF) systems depending on the direction of water flow through the
porous medium (… submodels representing the carbon cycle, the nitrogen cycle, an oxygen …

… In conclusion, the geometry of porous media has … flow in porous media, and thus more
elaborate study is needed to gain the confidence on the cyclic efficiency of CAES in porous media. …

… Cyclic flow will create a definite cold and heat reservoir … storage medium depends on the
aquifer's volume and flow … the behavior of local subsurface geothermal system to evaluate …

… brine in porous media [45] – indicating poorer H 2 flow ability. … saturation required to initiate
the flow of hydrogen, increased … of the fluid flow dynamics during subsurface H 2 storage and …

… Conversely, in subsurface flow modeling of infiltration and porous medium … cycle of iteration
is sufficient, owing to the slow response of subsurface flow to the variation of surface flow …