HR shows the small scales
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.