Abstract
To describe the dynamics of aggregates in a tidal channel, in situ measurements of current velocity, turbulence, backscatter intensity, particle size distribution and suspended matter concentration have been carried out throughout half a tidal cycle. The dynamics of suspended particle matter are shown: distinct turbidity clouds due to temporal increases in total concentration are detected by all sensors but acoustic methods seem to underestimate the amount of SPM when large aggregates are present. This study compares two different approaches for the in-situ analysis of particle size distributions: a laser diffraction method (Sequoia LISST 100) and image analysis of in-situ photography. Both instruments are limited due to their resolution and technical properties. Applied in combination, the two methods reveal the broad range of particle sizes ranging from a few microns to millimetre size.
| Original language | English |
|---|---|
| Pages (from-to) | 1173-1177 |
| Number of pages | 5 |
| Journal | Journal of Coastal Research |
| Volume | Special Issue 50 |
| Publication status | Published - Dec 2007 |
| Externally published | Yes |
| Event | International Coastal Symposium 2007 - Gold Coast, Australia Duration: 25 Apr 2007 → 29 Apr 2007 |
Keywords
- ADCP
- ADV
- Flocs
- Jade Bay
- LISST
- Suspended particle matter
- Tidal channel
Programme Area
- Programme Area 5: Nature and Climate