Development of the cultivation system for seafloor hydrothermal deposit

JAMSTEC developed the cultivation system of seafloor hydrothermal deposit in order to monitor physical property of hydrothermal fluid and secular change in a weight of the mineral deposit for long term. These cultivation systems were installed by CHIKYU on the “artificial” hydrothermal vents which were drilled by CHIKYU. One of cultivation system was installed in the C9024A well in the Iheya North field on February 25, 2016 and the other was installed in C9017B well in the Noho site on February 28, 2016. In this paper, we mainly describe the specification of newly developed cultivation system for seafloor hydrothermal deposit and some of installation results.