Depletion may refer to:
Environment
*
Resource depletion, decline of resources
*
Gas depletion
Gas depletion is the decline in natural gas production of a well, gas field, or geographic area.
Depletion rate
According to the US Energy Information Administration, in 1980 the world had enough proved gas reserves to last 48 years at the 198 ...
, decline of oil supply
*
Nutrient depletion Nutrient depletion is a form of resource depletion and refers to the loss of nutrients and micronutrients in a habitat or parts of the biosphere, most often the soil (soil depletion, soil degradation). On the level of a complete ecological niche or ...
, loss of nutrients in a habitat
*
Oil depletion, decline of oil supply
*
Overdrafting, extracting groundwater beyond the equilibrium yield of an aquifer
*
Ozone depletion
Ozone depletion consists of two related events observed since the late 1970s: a steady lowering of about four percent in the total amount of ozone in Earth's atmosphere, and a much larger springtime decrease in stratospheric ozone (the ozone l ...
, a decline in the total amount of ozone in Earth's atmosphere
Physics
*
Depletion force, an effective force in molecular and colloidal systems
*
Depletion region, in semiconductor physics
*
Grain boundary depletion
In materials science, intergranular corrosion (IGC), also known as intergranular attack (IGA), is a form of corrosion where the boundaries of crystallites of the material are more susceptible to corrosion than their insides. (''Cf.'' transgranu ...
, a mechanism of corrosion
Other uses
*
Ego depletion, idea that self-control or willpower draws upon a limited pool of mental resources that can be used up
*
Depletion (accounting), an accounting and tax concept used in mining, timber, petroleum, or other similar industries
*
T-cell depletion T-cell depletion (TCD) is the process of T cell removal or reduction, which alters the immune system and its responses. Depletion can occur naturally (i.e. in HIV) or be induced for treatment purposes. TCD can reduce the risk of graft-versus-host ...
, process of T cell removal or reduction
{{disambiguation