From June 20 to July 1, Dr. Yann Marcon and Ulli Spiesecke will join the VISIONS'18 expedition on R/V ROGER REVELLE led by the University of Washington in order to oversee the deployment of the two sonars at the southern Hydrate Ridge (800 m water depth). Mounted on large titanium tripods, the instruments will be lowered down to the seafloor with the ROV JASON (WHOI), and connected to an underwater junction node of the OOI cabled observatory. The observatory will provide power and two-way communications to the instruments, allowing MARUM scientists to control the sonars from the shore and to monitor deep-sea gas emissions in real-time.
Newsfeeds and videos about the installation of the two sonar on the observatory will be broadcast live on the website of Interactive Oceans (University of Washington).
The work is part of the M³ project for the acoustic monitoring of natural release of methane gas from the seafloor and is entirely funded by the German Federal Ministry of Education and Research (BMBF).