The discharge of water caused by melting, ablation, and glacial run-off along the coastline of Antarctica produces a westward zonal flow that could partly counteract the eastward wind-driven current.
Barcilon, Victor. 1966. "On the influence of the peripheral Antarctic water discharge on the dynamics of the Circumpolar Current." Journal of Marine Research 24, (3). https://elischolar.library.yale.edu/journal_of_marine_research/1075