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Fig. 2
Transmission rate 
of a wave passing through any of the critical levels defined by 
as a functionof the absolute value of the shear Rossby number |Ro| = |U′| (where U′
is scaled by 2Ω0) and the ratioof the horizontal wavenumbers αk = kz∕kx
for a co-latitude of the box θ0 = 10°
(left panel) and θ0 = 80°
(right panel).
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