Poor quality soil can be due to inadequate surface soil aggregation, low porosity and slow infiltration.
Below the firn is a zone in which seasonal layers alternately have open and closed porosity.
Beneficially, there is little or no cracking or porosity formation.
It is a function of the soil suction head, porosity, hydraulic conductivity and time.
Substrate with low porosity that permits limited transmission of groundwater is known as an aquitard.
The metal is poured at the lowest practical temperature in order to minimize cracks and porosity.
There are indications of an increase in the retention of porosity within the rock.
The mineral content, porosity, and general makeup of human bone is nearly identical to some species of South Pacific coral.