This is a supplemental video supporting the following paper:
Wang, J., Matthew R. Mazloff, Sarah T. Gille (2014), Pathways of Agulhas Waters South of 29S, Journal of Geophysical Research - Oceans,doi:10.1002/2014JC010049
In this video, the color shows the vertically-integrated tracer content (the tracer 1 in the paper) normalized by its maximum value. A log scale is used to magnify the details.
The 140 Sv and the 10 Sv vertically-integrated transport streamlines (blue lines) are used to define the Subantarctic Front (SAF) and the Polar Front (PF), respectively.