D why are they going there because they need to know
Well, the magma in the volcano is boiling... and boiling... and boiling, until, it finally expands enough to erupt.
The Earth's rotation deflects, or changes the direction of, these wind-driven currents. This deflection is a part of the Coriolis effect. The Coriolis effect shifts surface currents by angles of about 45 degrees. In the Northern Hemisphere, ocean currents are deflected to the right, in a clockwise motion.
