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Definition of Stratification:
Arrangement in layers[1].
This is the common definition for Stratification, other definitions can be discussed in the article

In oceanography:

Less dense water layer overlying a water layer of higher density (related to higher salinity, lower temperature or higher suspended sediment concentration). Density differences in the vertical inhibit turbulent mixing, which causes the interface of the layer to be sharpened.


Seawater density
Salt wedge estuaries


  1. Lawrence, E. (2005). Henderson’s dictionary of biology. Pearson Education Limited, 13th ed., Harlow. 748 p.