0.25 mm

Movie 6
Vorticity Wn

Vorticity distribution
-1.5
-0.5
0
0.5
1.0
1.5

A shear strain of 2.9 was imposed on the sample along the outer shear zone boundary. Four pictures were used for analysis of Movie5 separated by time steps of 22 minutes. 100 markers were digitised for the four pictures.