Measurement systems

Oceans 2025 Theme 8, work package 8.5

The aim is to design, construct and deliver to the science community measurement systems (a) for in-water microstructure, to estimate turbulence and mixing in the water column, and (b) for the detailed dynamics of particles in currents, waves and turbulence.

The set of developments and approximate timings are as follows:

(a) in-water microstructure		2007	2008	2009	2010
Test water-column seismic imaging	cruise data acquired	Y
	seismic / in-situ comparisons		Y
towed temperature-fluorometer chain	Test embryo system	Y
	Test and use real system		Y
Microstructure on AUV	System development, fabrication		Y
	Use on Dee cruises			Y
Microstructure on glider	built and Coastal Observatory trial				Y
Stinger for near-surface microstructure	fabrication			Y
	trial				Y

(b) dynamics of particles		2007	2008	2009	2010	2011
Coherent Doppler Velocity Profiler	complete 3-axis development	Y
improved signal/noise and resolution	built, trials			Y	Y
6-frequency Acoustic Backscatter	specification	Y
	built, trials		Y
Optical Backscatter	built, trials			Y
Intra-ripple suspension imaging					Y
HF Acoustic Doppler for bed-load						Y
Cabled sediment-dynamics measurements						Y

Team

John Huthnance
Mike Smithson
Chris Balfour
Richard Cooke
Dave Jones
John Kenny