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3-D Single Point Velocity Meter

The 3-D Single Point Velocity Meter (VEL3D) measures the fluctuating velocity (speed and direction) of water moving past the sensor and platform motion on moving profilers in three-dimensions (u,v,w). The VEL3D turbulent flow current meter measures how seawater mixes at the small scale, which is important in understanding how heat, mass, and momentum are transported throughout the ocean. When deployed in conjunction with nearby acoustic instruments, current meters can also provide important data for filtering of local current “noise” out of the acoustic signal.

Data Products

This instrument measures the following data products. Select a data product's name to learn more.

The algorithm code used to generate this instrument's data products is also available in the ion-functions GitHub repository.

Instrument Models & Deployed Locations

The OOI includes the following instrument makes and models for this instrument type. Follow the links below to find out where in the OOI this instrument has been deployed. You'll also find quick links for each instrument to Data portal, where you can plot and access data.

Series Make Model
VEL3DA Falmouth Scientific ACM-3D-MP
VEL3DB Nobska MAVS-4
VEL3DC Nortek VECTOR
VEL3DD Nortek VECTOR
VEL3DK Nortek Aquadopp II
VEL3DL Falmouth Scientific ACM-Plus

A current meter is held in the manipulator of the ROV ROPOS for installation at the International District 2 Site. Photo credit: NSF-OOI/UW/CSSF; Dive 1723; V14. Creative Commons License

Primary Science Discipline
Physical