What are deep and surface ocean currents?

in regards to the 2011 japan tsunami- what ocean currents deep and surface pass near or through the disaster impact area? is the disaster affected by surface or deep ocean currents? if so, how?

The last photo u wonder what is this telling me to do?

Why did other countries want to have a part in what was occurring in southwest asia?

Will give brainliest asaapppppppppppp plz im in a major hurry to finish which of these pairs of objects exerts the greatest gravitational force on each other? object 1 and object 3 object 4 and object 3 object 1 and object 4 object 4 and object 2