noun, noun or participle which takes 'suru'
flowing south; southward flow
Used for rivers, currents, or abstract flows moving southward. Often appears in geographic or meteorological contexts.
この川は南流して海に注ぐ。
This river flows south and empties into the sea.
暖かい空気が南流している。
Warm air is flowing southward.
Compound of 南 (south) and 流 (flow). The reading is on'yomi, following standard Sino-Japanese word formation.