About the book
The seepage flow is a phenomenon, where something like water finds gaps in a medium and passes through them. The flow is a slow progression on different time scales in various places. Rainwater that has infiltrated the soil is absorbed by plants through their roots and stems by capillary action. On islands, saltwater intrusion affects field crops and fruit trees. In a sandy beach, the action of waves generates seepage flow, purifying seawater physically and biochemically, which is one of the natural purification mechanisms. Artificial structures are also infiltrated by fresh or saltwater depending on environments. Although these seepage phenomena appear to show a steady-state, the phase proceeds so slowly as not to be noticed, where a certain amount is integrated to cross a threshold, leading to sudden changes. For example, seepage rainwater can trigger landslides. The infiltrated water causes corrosion and degradation of structural components through chemical reactions. In addition, the penetrated high-temperature magma, touching osmotic groundwater, raises the pressure in its chamber via phreatic explosions, resulting in an eruption.
This volume will provide new conceptual, qualitative, and quantitative commentaries on seepage flow in various situations, as well as the resultant phenomena due to seepage flow.