ON NATURE OF AN INTRA-THERMOCLINE LENS ON THE SUBPOLAR FRONT IN THE NORTH-ATLANTIC

The hypothesis of possibility of convectial mechanism of generation of intra-termocline lens (ITL) on the subpolar hydrological front in the North Atlantic is checked up by numerical modeling. One-dimensional d ifferential-parametric model of the upper layer of ocean is used. It i s shown that anomalous disturbances of boundary conditions which were in cold season 1989 - 1990 could significant to intensify evolution of convectial mixing. Conclusion about reality of convectial mechanism o f formation of the intra-termocline lens ITL is made. More favourable period (January-February) and location of formation ITL (to East from subpolar hydrological front) are indicated.