phreatic activity
phreatic activity Volcanic eruptions generated by the interaction between hot magma and surface lake water, sea water, or groundwater. The water immediately surrounding the magma is heated and volatilized. Its expansion builds up pressure on the envelope of water surrounding it. When the pressure exceeds the confining pressure of the overlying water column the water vapour expands explosively to produce a steam-dominated, phreatic (i.e. subsurface water) eruption. Where significant amounts of magmatic material are ejected in addition to steam the activity is said to be ‘phreatomagmatic’.
More From encyclopedia.com
Desalination Of Water , Desalination, also called desalting, is the removal of salt from seawater. It provides essential water for drinking and industry in desert regions or… Water storage , water storage See WATER INVENTORY.
water storage See water inventory. Water , Water
Background
Water is a chemical compound needed by most plants and animals on Earth in order to sustain life. Pure water is a tasteless, odorles… Geyser , Geyser
A geyser, a type of hot spring, is an intermittent or semi-regularly periodic spout of geothermally heated groundwater and steam. The word gey… Unsaturated Zone , The unsaturated zone is that portion of the subsurface in which the intergranular openings of the geologic medium contain both water and air. The uns… Recharge zones , Vadose zone
The unsaturated zone between the land surface and the water table . The vadose zone (from the Latin vadosus, meaning shallow) includes th…
You Might Also Like
NEARBY TERMS
phreatic activity