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Measuring a Lagrangian drifter's slip with an onboard ADCP
J L Herrera1, J González2, R A Varela1
1Grupo de Oceanografía Física, Universidad de Vigo, Facultad de C.C. del Mar, Campus de Vigo, 36310 Vigo, Spain.
Abstract:
A perfect Lagrangian drifter should move with the same velocity as the water volume that it is following. Deviations from this ideal will result in a relative velocity between the drifter's drogue and its surrounding water, commonly named "slip". Estimating a drifter's slip is difficult, especially for custom and heavily instrumented drifters. We propose to use a Self-Contained Acoustic Doppler Current Profiler (SCADCP) attached to the drifter to: •Measure the drifter's slip directly at the drogue depth.•Obtain complementary data of current at other depths.
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