Acoustic Doppler Current Profiler 600 kHz
Acoustic Doppler Current Profilers (ADCP) 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.
RDI Teledyne Acoustic Doppler current profilers are configured to monitor water currents at several frequencies. The instruments contain sensors for temperature, pressure, tilt and compass heading. RDI ADCPs use four beams to measure current velocity so that the fourth beam/transducer can substitute for a blocked or damaged beam or it can be used to increase data accuracy. The RDI Workhorse ADCP operating at 600 kHz monitors currents within a range up to 70 metres. In our area we typically get good data to about half that range.
Individual instruments of the above category, which are (or have been) connected to our observatories. Click an instrument for detailed information.
|Nortek Aquadopp Profiler AQD 8323||Fortune Bay|
|RDI Workhorse Monitor ADCP 600 kHz (SN 7992)||Marine Technology Centre|
|RDI Workhorse Monitor ADCP 600 kHz (17434)||Folger Passage|
|RDI Workhorse Monitor ADCP 600 kHz (17574)||Endeavour|
|RDI Workhorse Monitor ADCP 600 kHz (9256)||Marine Technology Centre|
|RDI Workhorse Monitor ADCP 600 kHz (9339)||Barkley Canyon|
|RDI Workhorse Monitor ADCP 600 kHz (SN 25471)||British Columbia Lower Fraser|
Click the instrument categories below for descriptions and lists of instruments belonging to that category.