1. downwelling large, rotating current loops caused by the Coriolis effect
2. gyre downward movement of surface ocean water caused by wind
3. thermohaline circulation upward movement of deeper, colder ocean water to the surface caused by wind
4. upwelling movement of deep ocean water driven by differences in temperature, salinity, and density

Explanation:

1. Gyre large, rotating current loops caused by the Coriolis effect

2 .Downwelling large downward movement of surface ocean water caused by wind

3. Upwelling upward movement of deeper, colder ocean water to the surface caused by wind

4. Thermohaline circulation  movement of deep ocean water driven by differences in temperature, salinity, and density

i think it's severe storms but i might be wrong