HR shows the small scales

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The pulse coherent technology embedded in the HR version of the Aquadopp profiler provides a higher temporal and spatial resolution than what we are used to seeing with Doppler current profilers. A recent test off a dock in Coconut Grove, Miami illustrates the point.

HR shows the small scales

The vertical component of velocity collected at 8 Hz with a cell size of 5 cm

The 2 MHz instrument was mounted near the surface in about 2 m of water.  The vertical resolution was 5 cm and the data output rate was 8 Hz. The motion in the area was dominated by short waves and chop with a period of about 1 s. As can be seen in the illustration, the HR-Aquadopp had no problem resolving this motion and the selected profies (right pane) clearly shows how the vertical motion oscillates.

The HR technology is limited in its ability to measure high velocities so it is mostly used in low energy conditions.  However, it really excels in applications such as bottom bounday flow, lake flow, tidal marshese, etc.  Give us a call or send us an email send us an email if you are interested in learning more about how the HR firmware option can be used in your application.

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