Acoustic Doppler Current Profiler 2 MHz
Acoustic Doppler Current Profilers are hydroacoustic instruments, similar to sonars. ADCPs measure current speed and direction at multiple predetermined depths simultaneously. ADCPs use the Doppler effect of sound waves that are scattered by particles in seawater over a depth range.
The travelling time of sound waves gives an estimate of distance, and the increase (blue shift) or decrease (red shift) in frequency is converted into water current velocities.
Nortek Aquadopp Current Profilers uses 3 acoustic beams typically slanted at 25 degrees to measure the current profile. The internal tilt and compass sensors measure the direction of the current and the high resolution pressure sensor measures depth. If the system is fixed mounted, the pressure sensor can measure the tidal elevation. The HR Aquadopp Current Profiler measures the phase shift between two or more acoustic pulses. The instrument transmits a pulse and then records an echo to measure the velocity along each of the acoustic beams.
Individual instruments of the above category, which are (or have been) connected to our observatories. Click an instrument for detailed information.
|Current Meter at Head of Placentia Bay||Ocean Networks Canada Offices|
|Nortek Aquadopp HR-Profiler 2 MHz 2700||Barkley Canyon|
|Nortek Aquadopp HR-Profiler 2 MHz 2978||Barkley Canyon|
|Nortek Aquadopp HR-Profiler 2 MHz ASP2699 AQD2973||Barkley Canyon|
|Nortek Aquadopp Meter AQD 2253||Ocean Networks Canada Offices|
|Nortek Aquadopp Profiler 2MHz 7401||Folger Passage|
|Nortek Aquadopp Profiler A3P9315 AQD14501||Marine Technology Centre|
|Nortek Aquadopp Profiler AQD 14543||Marine Technology Centre|
|Nortek Aquadopp Profiler AQD 1504||Marine Technology Centre|
|Nortek Aquadopp Profiler AQD 2751||Marine Technology Centre|
|Nortek Aquadopp Profiler AQD 2786||Marine Technology Centre|
|Nortek Aquadopp Profiler AQD 2958||Marine Technology Centre|
|Nortek Aquadopp Profiler AQD 8314||St. John's Bay|
|Nortek Aquadopp Profiler AQD 8455||Marine Technology Centre|
|Nortek Aquadopp Profiler AQD 9917||Marine Technology Centre|
Click the instrument categories below for descriptions and lists of instruments belonging to that category.