Beta spiral method
The Beta spiral method is an inverse process for determining the oceanic velocity field, where the motion is geostrophic and the potential vorticity locally balanced. This method provides a mechanism for determining the absolute geostrophic circulation field rather than merely the relative field.
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- G.Bigg. The beta spiral method Deep Sea Research Part A. Oceanographic Research Papers, vol. 32, issue 4, pp. 465-484
- F. A. Schott and H. Stommel. Beta spirals and absolute velocities from different oceans. Deep Sea Res., 25: 961–1010, 1978.