![]() |
Figure 1:
Uncertainty on the velocity measurements ![]() |
Open with DEXTER |
![]() |
Figure 2: Top: distributions of balltracked velocities at 3 cadences for test data on 11 November 2007. Bottom: distribution of the balltracked velocities for the 2007 April 10 dataset. Time average is 30 mn and spatial smoothing has an FWHM of 4 Mm. |
Open with DEXTER |
![]() |
Figure 3:
Velocity vector fields of 2007 April 10. The FOV is
![]() |
Open with DEXTER |
![]() |
Figure 4:
Velocity vector fields of 2007 November 7. The FOV is
![]() |
Open with DEXTER |
![]() |
Figure 5: Sketch of the Lagrangian representation of a vortex flow. The concentric circles represent the iso-contours of the tangential velocity increasing toward the center of the flow. The segmented arrows represent massless chained corks. |
Open with DEXTER |
![]() |
Figure 6: Eulerian representation of the flow in the red square of Fig. 4. The colored background is the normalized vertical curl. |
Open with DEXTER |
![]() |
Figure 7: Zoomed-in velocity field of Fig. 4 with a filled contour of the maximum Ca II emission. The red square indicates the patch represented in Fig. 8. |
Open with DEXTER |
![]() |
Figure 8:
Na I stokes V (FG/SOT) from the November dataset at 3 different times centered on the vortex flows. The FOV of
![]() |
Open with DEXTER |