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An intercomparison of some current meters, II. Report on an experiment carried out from the Research Vessel Akademik Kurchatov, by the working group on continuous current velocity measurements
(1974). An intercomparison of some current meters, II. Report on an experiment carried out from the Research Vessel Akademik Kurchatov, by the working group on continuous current velocity measurements. UNESCO Technical Papers in Marine Science = Documents techniques de l'Unesco sur les sciences de la mer, 17. UNESCO: [s.l.]. 61 + appendix pp.
Deel van: UNESCO Technical Papers in Marine Science = Documents techniques de l'Unesco sur les sciences de la mer. UNESCO: Paris. ISSN 0503-4299; e-ISSN 0251-5024, meer
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| Abstract |
Six types of recording current meter (Alexaev, Bergen, Braincon, Geodyne, LSK and Plessey) were compared during the U.S.S.R. Polygon experiment from the research vessel Akademik Kurchatov. The instruments were set on four moorings arranged in a rough square with approximately 10 km. on a side, centered about 16° 35'N, 32°50'W for a twelve-day period or triads at depts of 50, 200, and 1000m. One Alexaev instrument was included in each instrument pair of triad.From the twenty-six records obtained, it was concluded that while the recorded currents were similar in the mean, there were large differences in the response to time-varying currents. Some of these differences are understandable in terms of known instrument characteristics, but two in particular are not. A systematic difference in incremental speed response was noted between Alexaev instruments and other types. The high-frequency energy density for LSK instruments was significantly lower than for other instruments. Further study of these differences is recommended. |
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