In July 2018, a team of researchers and engineers from Rutgers University and the University of Washington Applied Physics Laboratory deployed the Cabled Observatory Vent Imaging Sonar (COVIS) to the NSF-funded Ocean Observatories Initiative Cabled Array.
Selecting a site for COVIS and calibrating the sound backscatter response to heat content after installation required high-frequency measurements of the hot water being expelled from diffuse venting sites around the ASHES hydrothermal vent field. To make these measurements, the COVIS team built temperature arrays using RBRsolo³ T and RBRduet³ T.D standalone loggers.