Cline (hydrology)
# Cline (hydrology)

In hydrology and related studies, a cline (from Ancient Greek κλίνειν (klínein) 'to lean') is a comparatively thin, typically horizontal layer within a fluid, in which a property of the fluid varies greatly over a relatively short vertical distance.

Such clines and the respectively varying properties include:

* Chemocline - chemistry
* Halocline - salinity
* Lysocline - dissolution of calcite
* Pycnocline - density
* Thermocline - temperature
