Burger number is a dimensionless number indicative of the importance of baroclinicity in a flow field. It is the square of the ratio of the Rossby radius of deformation to the horizontal scale of the flow, and is given by:
Bu = NH/fL
where N is the buoyancy frequency, H the vertical scale of the flow (i.e. the depth), f is the inertial frequency, and L the horizontal scale of the flow. A Burger number of zero indicates a rotation dominated flow, while large values indicate stratification dominated flows. This was named for the mathematician and meteorologist Alewyn Burger.
|This article is written at a definitional level only. Authors wishing to improve this entry are inivited to expand the present treatment, which additions will be peer reviewed prior to publication of any expansion.|