Concept
Aquatec Aquascat 1000 R (automated) acoustic suspended sediment profiler
| URI | http://vocab.nerc.ac.uk/collection/L22/current/TOOL1357/1/ | |
|---|---|---|
| Within Vocab | SeaVoX Device Catalogue | |
| Alternative Labels | Aquatec Aquascat 1000R | |
| Definition | A high frequency acoustic suspended sediment profiler used in measurement of suspended sediment profiles, precision altimetry, dredge plumes and turbulence. The instrument is portable and can be used on a small vessel and stationary structures, such as buoys and mooring lines. The sensor transmits pulses of sound at various frequencies into the water and records the sound signal scattered back. In order to calculate suspended sediment concentrations (SSC) from acoustic backscatter, multiple frequencies of sound are transmitted into the same body of water. The size dependent response from the same sediment particles scattering different frequencies of sound enable the mean particle size and SSC to be calculated for bins along the profile range. It consists of 4 cabled acoustic transducers selectable from a range of 7 different frequencies (from 300 kHz to 5 MHz) with integrated temperature and depth sensors. The housing is designed to operate at depths down to 1000m in both freshwater and marine water environments. Other housing options are available providing greater depth capability. Turbidity sensor is optional. The instrument is most suitable for particle sizes between 20 um and 500 um radius and concentrations of 0.01 g/l to 20 g/l over 1 m, and capable of horizontal or vertical profiling. Vertical resolution: 2.5 mm to 4 cm. Range: 150 cm (typical), up to 10 m at frequencies below 2MHz. | |
| Date | None | |
| Identifier | TOOL1357 | |
| Note | accepted | |
| Is Version Of | TOOL1357 | |
| version | 1 | |
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