Near-surface ocean current sensors : problems and performance
McCullough, James R.
MetadataShow full item record
When current meters are used to measure mean horizontal currents in surface gravity waves, immunity to the vertical component of flow is important, even though the net vertical flow averages to zero and is normal to the desired horizontal components. A technique is presented for estimating the magnitude of the errors introduced by imperfect rejection of the off-axis flows (cross-talk) from laboratory measurements of the current meter "vertical-cosine-response." The predicted dynamic response is shown to compare favorably with laboratory measurements. The measured steady state vertical-cosine-response functions for several practical current sensors are summarized and used to estimate the magnitude of wave-induced errors in horizontal mean current measurements. A new dye technique for evaluating near-surface current meter performance in waves is shown.
Suggested CitationTechnical Report: McCullough, James R., "Near-surface ocean current sensors : problems and performance", 1979-12, DOI:10.1575/1912/10340, https://hdl.handle.net/1912/10340
Showing items related by title, author, creator and subject.
Clay, Peter R.; Longworth, Steven P. (Woods Hole Oceanographic Institution, 1986-10)This report reviews the working principles of the InterOcean S4 electromagnetic current meter and outlines the practical difficulties and engineering solutions to convert these basic principles into a working ...
A compilation of moored current meter and wind recorder data: volume XXXVIII, Long-Term Upper Ocean Study (LOTUS): (Moorings 787, 788, 789, 790, 792) Tarbell, Susan A.; Montgomery, Ellyn T.; Briscoe, Melbourne G. (Woods Hole Oceanographic Institution, 1985-12)The Long-Term Upper Ocean Study (LOTUS) was a two-year field experiment near 34°N, 70°W, designed to acquire a continuous set of measurements of currents and temperatures in the upper, open ocean together with ...
A compilation of moored current meter and wind recorder data : volume XXXV, Long-Term Upper Ocean Study (LOTUS) ; (Moorings 764, 765, 766, 767, 770), May 1982 - April 1983 Tarbell, Susan A.; Pennington, Nancy J.; Briscoe, Melbourne G. (Woods Hole Oceanographic Institution, 1984-08)LOTUS was a two-year experiment near 34°N, 70°W, designed to acquire and analyse a continuous set of measurements of currents and temperatures in the upper, open ocean together with local hydrography, meteorology, and ...