solenoid
A tube formed in space by the intersection of unit-interval isotimic surfaces of two scalar quantities.
The number of solenoids enclosed by a space curve is therefore equal to the flux of the vector product of the two gradients through a surface bounded by the curve, or where ds is the vector element of area of a surface bounded by the given curve. Solenoids formed by the intersection of surfaces of equal pressure and density are frequently referred to in meteorology. A barotropic atmosphere implies the absence of solenoids of this type, since surfaces of equal pressure and density coincide.
See also baroclinity, vorticity equation, circulation theorem.
See also baroclinity, vorticity equation, circulation theorem.
