Comparison of Shipboard Acoustic Doppler Current Profiler and Moored Current Measurements in the Equatorial Pacific
- 1 December 1987
- journal article
- Published by American Meteorological Society in Journal of Atmospheric and Oceanic Technology
- Vol. 4 (4) , 742-747
- https://doi.org/10.1175/1520-0426(1987)004<0742:cosadc>2.0.co;2
Abstract
Depth-averaged current shears computed from shipboard acoustic Doppler current profiler (ADCP) and moored Savonius rotor and vane vector-averaging current meter (VACM) measurements are compared at 35, 62.5, 100 and 140 m depths within 7 km of each other near 0°, 140°W during a 12-day interval in November 1984. The agreement between the VACM and ADCP shears was excellent. The average root-mean-square difference of hourly shear values was small, approximately 0.21 × 10−2 s−1, and the average correlation coefficient was 0.90. Spectral estimates were equivalent to within 95% significance level and the VACM and ADCP shears were 95% statistically coherent with zero phase difference for frequencies below 0.2 cycles per hour.Keywords
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