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To take samples from the seabed in hazardous, unapproachable waters, we have developed a new observation system that can take samples from the seabed by remote control. Operating this system in such hazardous waters presents the risk of losing it. Therefore, we designed and built a simple and cheap prototype based on existing technologies and knowhow JAMSTEC has obtained at sea. We conducted sea trials...
JAMSTEC (Japan Agency for Marine Earth Science and Technology) deployed a deep water mooring down to 4 500 m which was deployed in 2012 and recovered in 2013 in the Southern Ocean at 60 degree south latitude. CSIRO (Commonwealth Science and Industry Research Organization) has also been operating deep water moorings down to 4 500 m south of Tasmania, Australia at 47 degree south latitude. Both of these...
Performing oceanographic measurements from the sea surface to the sea bottom is technically challenging under rough or icy sea conditions. In 2011, we tested measures for protecting a buoy under such severe conditions by incorporating anti-icing and tolerance to high winds and rough seas. Based on those results, we conducted detailed design of a suitable buoy system. In January 2012, we deployed the...
We moored a large buoy system in the Southern Ocean (60°S, 140°W) during 2012/01/16 – 2012/12/19. The safely moored buoy system collected valuable data. This time, a logger was developed for operation and assessed. Event analyses use collected data of the tension gauge of the buoy, acceleration information, and a magnetic direction. Furthermore, FFT analysis from a tension gauge and an accelerometer...
Performing oceanographic measurements from the sea surface to the sea bottom is technically challenging under rough or icy sea conditions. In 2011, we tested measures for protecting a buoy under such severe conditions, by incorporating anti-icing and tolerance to high winds and rough seas. Based on the results, we carried out detailed designs of a suitable buoy system. In January 2012, we succeeded...
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