Acoustic Dopple Velocimeter

The Department of Geosciences at Stockholm University (IGV) is seeking to buy an Acoustic Doppler Velocimeter (ADV) for aquatic eddy covariance measurements.

IGV is conducting regular measurement campaigns in the Baltic Sea to understand geochemical processes in the water column and sediment. One current focus is to study the benthic boundary layer, i.e. the turbulent water layer just above the sediment, which is a critical transition zone regulating the exchange of nutrients, particles and gases between the sediment and overlying water.

To understand the processes in this boundary layer, we conduct continuous measurements the, using an autonomous, programmable lander system. This system is deployed on the sea bottom and left for remote operation/data collections for timespans between 1 day and 6 months.

We now wish to extend our current setup with fast 3D-measurements of the water velocity field for conducting eddy covariance studies. We therefore require a velocimeter with all necessary accessories (power supply, data logging unit) suitable for underwater measurements.

See document for specifications