Capillary Action and Water Infiltration in Porous Media - Scientific Diagram #212609 (License: Personal Use)

Panel A shows a dry porous column with water at the base, initiating capillary rise. Panel B depicts intermediate saturation, where water has risen and irregular wetting fronts form due to heterogeneous pore structure. Panel C illustrates near-complete saturation, with complex fingering patterns indicating unstable displacement and residual air trapping. The diagram is commonly used in soil physics and hydrogeology to explain unsaturated flow dynamics.

Used in educational or technical web pages on hydrology, soil science, or civil engineering to illustrate infiltration processes; matches user intent seeking visual understanding of capillary action and saturation mechanisms in porous media.