The SSH sequence from the model result shown below is an example of an anticyclonic eddy generation in the Kuroshio Extension region (day 2342 to day 2460)
Click on image to view barotropic and baroclinic streamline between day 2420 to 2460.
The anticyclonic eddy strengthens as a result of eddy merger and detaches from the Kuroshio due to advection by the lower-layer geostrophic motion.
The sequence suggests that the formation of the energetic anticyclonic eddy south of the jet results from an inverse energy cascade.