Equatorial Currents

RD Instruments’ narrowband 153kHz Acoustic Doppler Current Profiler (ADCP)

Separate subsurface mooring

Upward looking deployed at 300 to 350 meters

Measures velocity about every 9 meters of depth

No realtime data - yearlong deployments

Sontek Argonaut

Attached to line of the surface mooring

Each instrument measures velocity at a single depth

Realtime data - six month to yearlong deployments