Halocline vs. Thermocline

Haloclinenoun

a strong, vertical salinity gradient; the (sometimes indistinct) border between layers of water that contain different amounts of salt

Thermoclinenoun

(geography) A layer within a body of water or air where the temperature changes rapidly with depth.

Halocline

In oceanography, a halocline (from Greek hals, halos 'salt' and klinein 'to slope') is a cline, a subtype of chemocline caused by a strong, vertical salinity gradient within a body of water. Because salinity (in concert with temperature) affects the density of seawater, it can play a role in its vertical stratification.

Thermocline

A thermocline (also known as the thermal layer or the metalimnion in lakes) is a thin but distinct layer in a large body of fluid (e.g. water, as in an ocean or lake; or air, e.g.