Compléter Surface CurrentsVersion en ligne Surface Currents and their characteristics par Billie Jean Warta 1 can twist and pinch off rings of water called . 2 North Atlantic deep water flows toward the . 3 The phenomena of stronger currents in western N . Pacific than in the eastern N . Pacific is called 4 Microphones placed in the water to detect sound are called 5 The large , roughly circular cells of water that rotate around ocean basins & are driven by prevailing winds are called 6 The far southern current that circles the globe around Antarctica is called the 7 The eastward flowing current along the equator , under the doldrums , is called the equatorial 8 Water movement that occurs as a result of a balance between gravity and the Coriolis effect is called 9 Wind driven currents will continue to move after the winds cease because of 10 The Gulf Stream is fed by the curren t 11 Gyres in the Northern Hemisphere rotate 12 Water is driven into the center of gyres by 13 Bottles that carry postcards in them are sometimes called 14 The changing direction of water movement with depth in response to the overlying wind is called the 15 Measuring current directions and speeds by changes in the frequency of sound is based on the 16 are the most common instruments used to measure the speed and direction of current s 17 Surface water sinks in areas of 18 Deep water rises to the surface in areas of 19 An excellent example of the transport of water into the center of a large gyre is the Sea in the North Atlanti c 20 Cyclical changes in global climate are known as cycle s 21 Zones of permanent along the western sides of continents are good fishing ground s 22 Ekman transport is degrees to the direction of the win d 23 There is no source for bottom water in the North Pacific similar to the North Atlanti c 24 Deep water comes to the in areas of divergenc e 25 Typical speeds for surface currents are usually about 0 . 1 to 0 . 5 / ( 0 . 3 - 1 . 5 ft / s )