Manual – Starflow QSD Model 6527B and 6537A
Unidata Manual - 6527B and 6537A Starflow QSD User Manual 08 05 2023.docx
Page 109
17.15.2.
Burying the Transducer in Sand
Part-buried sensors continue to
operate. Provided some parts
of both velocity sensors are
above the sand level, the
velocity recorded is the same
as if the sensor was clear.
Completely buried sensors result in the signal collapsing. The signal does not appear to
escape from beneath the sand to interrogate the water above.
The following histogram is typically seen.
17.15.2.1. Debris on the Sensors
A similar effect to saltation can result from leaves
and fine debris covering the sensors.
If the sensors are partly clear, the recording is not
affected. However, one leaf lying across the two
velocity sensors is enough to corrupt the signals
and produce the type of histogram produced from
a buried sensor.
