Development of Sensor Deployment Module Under the Sea-Floor Using the Deep-Sea Boring Machine System

For construction of borehole observatory which aim detect crustal deformation, we developed new deployment method using sensor deployment module for seafloor drilling machine system; the deployment method can drill a borehole and install a sensor in single dive. We conducted a sea trial test using a scale model and successfully installed a dummy sensor into shallow borehole at 2.8m below from the seafloor at water depth 1,879m.