A Geophysical Technique in Oceanography: Electromagnetic Induction and the Barotropic Current Meter
24 March 1989
By contrast to our knowledge of depth-dependent (baraclinic) motions, only limited information is available about the distribution and statistics of the subinertial depth-independent (barotropic) velocity field in the world ocean. This talk focuses on measurement of the latter using inexpensive free-fall electric field recorders. The theoretical relation of the horizontal electric field to the seawater conductivity-weighted, vertically-integrated (CWVI) water velocity will be derived using a Mie expansion after Backus.