Laboratory modeling demonstrates the dynamics of the flow generated by a cylinder moving either Eastward or Westward on the polar beta plane. Polar beta plane is modeled in a rotating layer of fluid with parabolic free surface. One can see von Karman vortex streets behind the cylinder as well as inverted vortex streets and Rossby waves. The surface of the fluid is visualized by optical altimetry. For more details see (Iakov Afanassiev) www.physics.mun.ca/~yakov
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