TY JOUR TI Generation of Nonlinear Internal Waves by the Transcritical Flow in the Kara Gates Strait KW Nonlinear internal wave KW internal wave generation mechanisms KW transcritical regime KW lee waves KW Froude number KW transformation of barotropic tidal energy KW Kara Gates Strait KW Arctic Ocean JO Russian Journal of Earth Sciences AU Kopyshov, I.O. AU Kozlov, I.E. AU Zimin, A.V. PY 2026 IS 25 PB Geophysical Center of the Russian Academy of Sciences