Top left: South polar crop of steady stream function (velocity field vector potential, with cyclones bright red) derived from PJ17 image pair (#43, #46).
Top center: Equipotential lines of stream function.
Top right: Extrapolation of high-passed (lower left) image using the stream function.
Center left: Minima (cyclonic centers, blue), maxima (anticyclonic centers, red), saddles (yellow) of stream function.
Center center: Merge of the four layers above, below, left, and right of the central image.
Center right: Isolines starting or ending at saddles.
Bottom left: High-passed south polar equidistant azimuthal planetocentric map of image JNCE_2018355_17C00043_V01, pole at pixel (100,100), with pixel(0,0) the lower left corner. Resolution is 60 pixels per degree.
Bottom center: Steepest ascent and descent paths starting at saddles of stram function.
Bottom right: Linearized and illumination-adjusted, south polar equidistant azimuthal planetocentric map of image JNCE_2018355_17C00043_V01, pole at pixel (100,100), with pixel(0,0) the lower left corner.
This preliminary version is still noisy, and provided without calibrated scale. Residual rotation, translation, and distortion may have modified the preliminary results.
Refined and calibrated versions may eventually be provided via the Think Tank.