Figure 1
From: Passive acoustic measurement of flow velocity in the Straits of Florida
Acoustic noise interferometry experiment in the Florida Straits. (a) Maps show the observation area with bathymetry contours and positions (black circles) of the autonomous noise recording systems 1, 2, and 3 deployed in December 2012. The contour interval is 100 m. (b) Shipborne dual-frequency acoustic Doppler current profiler (ADCP) measurements, from the deployment cruise, of the eastward (panels 1 and 2) and northward (panels 3 and 4) components of current velocity. 600 kHz measurements (panels 1 and 3) yield current estimates in the 2–10 m depth range, while 75 kHz measurements (panels 2 and 4) yield current estimates in the 10–70 m depth range. Three time intervals, when the ship was in the vicinity of the noise recording systems, are indicated by black bars.