Ocean current | Distribution, Causes, & Types | Britannica
What method is used to measure ocean surface currents directly? - Quora
Drifter (floating device) - Wikipedia
SVS - Global Sea Surface Currents and Temperature
OS - Measuring ocean total surface current velocity with the KuROS and KaRADOC airborne near-nadir Doppler radars: a multi-scale analysis in preparation for the SKIM mission
Ocean Currents
Measuring Sea Level | Coastal Processes, Hazards, and Society
How to Measure Current with a Clamp Accessory | Fluke