NATIONAL OCEAN SERVICE NATIONAL OCEANIC ATMOSPHERIC ADMINISTRATION DEPARTMENT OF COMMERCE OCEAN FACTS WHAT WE DO EDUCATION PODCASTS VIDEO IMAGES ABOUT US TERM MOTION YOU KNOW OCEAN TIDES DO YOU KNOW OCEAN CURRENTS WATCH VIDEO PODCAST LEARN PUTS MOTION IN THE OCEAN DRIVEN WATER DENSITY OCEANIC CURRENTS DESCRIBE THE MOVEMENT WATER FROM ONE LOCATION CURRENTS GENERALLY MEASURED METERS PER SECOND KNOTS KNOT KILOMETERS PER HOUR MILES PER HOUR RISE AND FALL OF TIDES CREATE CURRENT BAYS ALONG THE COAST TIDAL CURRENTS CHANGE REGULAR PATTERN PREDICTED FUTURE STRONG TRAVEL EIGHT WINDS DRIVE COASTAL AREAS SCALE PHENOMENA COASTAL UPWELLING GLOBAL THE OPEN CIRCULATE THOUSANDS MILES OCEAN BASINS THERMOHALINE CIRCULATION PROCESS DENSITY DIFFERENCES TEMPERATURE SALINITY VARIATIONS PARTS DEEP OCEAN LEVELS MOVE TIDAL SURFACE CURRENTS AFFECT CLIMATE DRIVING THE EQUATOR COLD THE POLES GULF BRINGS WINTER WEATHER SEARCH SOCIAL MORE INFORMATION OPERATIONAL OCEANOGRAPHIC NOAA COASTWATCH CONTACT PRESS RELEASES EVERY KID IN A PARK PRIVACY POLICY SURVEY SITE MAP REPORT ERROR DISCLAIMER EMPLOYEES PROGRAM OFFICES WEBSITE DIRECTORY INFORMATION QUALITY FREEDOM OF INFORMATION ACT YOU ARE HERE