The Design and Performance of a Free-Fall Electro-Magnetic Velocity Profiler (EMVP).
WOODS HOLE OCEANOGRAPHIC INSTITUTION MASS
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The principles of operation, the construction and the performance are described for a free-fall Electro-Magnetic Velocity Profiler EMVP. The device measures and records weak electric currents produced by the motion of the sea through the geomagnetic field. The electric current measurements as a function of depth are interpreted in terms of the depth variable, horizontal velocity field. A complete velocity profile in 6000 m of water is achieved in about 1 12 hours with an accuracy of about 1 cms at a vertical resolution of 10 m. In addition to velocity, temperature, electrical conductivity and pressure are recorded once per second for a vertical resolution of about 1 m. Modified author abstract
- Physical and Dynamic Oceanography