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Kennelly, M. A., University of Rhode Island/Graduate School of Oceanography, Narragansett, USA, m.kennelly@gso.uri.edu
Watts, D. R., University of Rhode Island/Graduate School of Oceanography, Narragansett, USA, rwatts@gso.uri.edu
Tracey, K. L., University of Rhode Island/Graduate School of Oceanography, Narragansett, USA, ktracey@gso.uri.edu
Donohue, K. A., University of Rhode Island/Graduate School of Oceanography, Narragansett, USA, kdonohue@gso.uri.edu

CURRENT-METER PERFORMANCE COMPARISON IN HIGH CURRENT CONDITIONS IN DRAKE PASSAGE

Previous current-meter intercomparisons suggest that Aanderaa RCM11s are biased low in the speed range 0-35 cm s-1. A short near-bottom (4000 m depth) mooring deployed in Drake Passage revisits this bias. The mooring consisted of seven current meters representing four models (two VMCMs, two RCM11s, two Aanderaa SEAGUARDSs, and a Nortek Aquadopp). Two high-current events occurred (>35 cm s-1). All current-speed measurements agreed within about 5%. The VMCMs, chosen as the reference, were found to measure the median of the mean-current magnitudes. The RCM11 and SEAGUARD current speeds did not differ significantly from a 1:1 relationship with the VMCMs, and all three types tended to agree best at higher speeds (35-70 cm s-1). The Aquadopp current speeds were about 5% higher than the VMCMs but because of a short record this comparison only extended over the range 0-40 cm s-1.

Poster presentation

Session #:004
Date: 2/20/2012
Time: 17:00 - 18:00
Location: Poster/Exhibit Hall

Presentation is given by student: No

PosterID: B2054