TY JOUR TI Dynamic, Chemical and Biological Features of the Southern Ocean Fronts in Austral Autumn 2024 KW Southern Ocean KW front KW frontal zone KW ACC KW SADCP KW altimetry data KW nutrients KW chlorophyll-a JO Russian Journal of Earth Sciences AU Vesman, A.V. AU Shved, Y.V. AU Smirnova, D.A. AU Fedotova, A.A. AU Petrova, A.A. AU Frey, D.I. PY 2025 IS 25 PB Geophysical Center of the Russian Academy of Sciences