Laboratory investigation of a three dimensional wall attached density current down an inclined slope in a rotating tank

The time dependent three dimensional .wall attached,density current down an inclined plane surface in a large tank, rotating anticlockwise, is studied experimentally. As expected, the density current is deflected to the right .There is a initial regime (regime A) where the angle of the deflection is almost constant and obtains large values ( up to 70 degrees) .The regime A is followed by another regime (regime B), where the angle of deflection is smaller . The transition time from regime A to regime B is equal to about one rotation period .The angle of the deflection depends from the Rossby radius of deformation. For the configuration of our experiments the predominant driving force is the gravity .