# Margules's equation

From AMS Glossary

## Margules's equation

An equation for the equilibrium inclination of an interface separating two homogeneous air masses in a steady geostrophic motion parallel to the interface, where α is the angle of inclination of the surface to the horizontal,

*f*the Coriolis parameter,*g*the gravitational acceleration, and*T*_{1}and*T*_{2}the absolute temperatures of the colder and warmer air masses, respectively, with speeds*v*_{1}and*v*_{2}.This equilibrium condition has been used to calculate the slope of atmospheric frontal surfaces.