1. At the interface between a solid surface and a fluid, a thin fluid layer that is static because of friction between molecules of the fluid and the solid.
2. General term used to describe the atmospheric layer up to about 100 m above the ground surface, where the air flow is largely conditioned by the frictional effects of the surface. Mean velocities in the boundary layer are typically less than the free-stream values. See also PLANETARY BOUNDARY LAYER.
"boundary layer." A Dictionary of Earth Sciences. . Encyclopedia.com. (February 24, 2018). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/boundary-layer
"boundary layer." A Dictionary of Earth Sciences. . Retrieved February 24, 2018 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/boundary-layer
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