SHEAR INSTABILITIES IN ARRESTED SALT-WEDGE FLOWS

'One-sidedness' in arrested salt-wedge flows is investigated with theo retical models based upon two-layer approximations. These models inclu de the effects of rigid bottom boundaries and the effects of density i nterface displacement with respect to the centre of the shear layer. T he results indicate that inclusion of both interface displacement and rigid boundaries in the model greatly contribute to the 'one-sidedness ' phenomenon and influence the wave characteristics, especially their stability criteria. Data from laboratory experiments agreed well with the results produced by these models.