  The technique of normal-mode coupling is a powerful tool with which to
seismically image non-axisymmetric phenomena in the Sun. Here we apply mode
coupling in the Cartesian approximation to probe steady, near-surface flows in
the Sun. Using Doppler cubes obtained from the Helioseismic and Magnetic Imager
onboard the Solar Dynamics Observatory, we perform inversions on mode-coupling
measurements to show that the resulting divergence and radial vorticity maps at
supergranular length scales ($\sim$30 Mm) near the surface compare extremely
well with those obtained using the Local Correlation Tracking method. We find
that the Pearson correlation coefficient is $\geq$ 0.9 for divergence flows,
while $\geq$ 0.8 is obtained for the radial vorticity.
