Title :
An instrument to measure seabed boundary-layer processes
Author :
Pearson, Nicholas D. ; Thomas, Michael R.
Author_Institution :
Minist. of Agric., Fisheries & Food, Lowestoft, UK
fDate :
10/1/1991 12:00:00 AM
Abstract :
An instrumented platform for investigating the processes governing sediment resuspension and transport near the seabed is described. Water velocities at five positions, suspended-sediment concentration profiles, surface wave activity, and other parameters are measured. The data logger is extremely flexible. There is no fundamental limit to the number or type of sensors that can be fitted. Regular and adaptive sampling are supported to make best use of its 12 Mb of solid-state data storage. Each individual sensor has its sampling rate specified at up to 10 Hz. The platform is designed to minimize flow interference in the vicinity of the current meters. Its orientation is monitored during deployment so that it can be aligned optimally
Keywords :
computerised instrumentation; data acquisition; oceanographic equipment; oceanographic techniques; sedimentation; sediments; 0 to 100 m; 10 Hz; 12 Mbit; benthic boundary layer water velocities; coastal oceanography; continental shelf dynamics; current meters; flow interference; instrumented platform; marine sediments transport; platform orientation; seabed boundary-layer processes; sediment resuspension; sensor sampling rate; solid-state data storage; surface wave activity; suspended-sediment concentration profiles; Instruments; Interference; Memory; Monitoring; Position measurement; Sampling methods; Sediments; Solid state circuits; Surface waves; Velocity measurement;
Journal_Title :
Oceanic Engineering, IEEE Journal of
