accepted
Rockland Scientific Vertical Microstructure Profiler (VMP) 6000
A full ocean-depth untethered vertical microstructure turbulence profiler for the measurement of dissipation-scale turbulence along with fine-scale temperature and conductivity for up to 6000 m depth. The instrument is fitted with pressure, temperature (SBE-3F) and conductivity (SBE-4C) sensors, three high grade accelerometers, an internal data acquisition system with 1 Gb solid state disk (Linux OS), and a standard suite of up to 6 microstructure turbulence sensors in any combination of SPM-38-5 velocity shear probes, FP07-38-5 fast thermistors or optional SBE7 microstructure conductivity probes. There is also a geo-electro magnetic current meter for fine-scale shear measurements. The instrument has an aluminium frame with syntactic foam attached for flotation. Data is collected on the downcast and after reaching a pre-defined depth the profiler releases ballast weights so that the instrument becomes positively buoyant. As back-up there is a triple redundancy emergency ballast release system. The VMP 6000 has an RF beacon, ARGO transmitter and Xenon flasher attached for locating purposes. This instrument replaced the VMP 5500 in 2010.
Rockland VMP 6000
Rockland VMP 6000
SDN:L22::TOOL1150