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Chikyū
is a Japanese scientific drilling ship built for the Integrated Ocean Drilling Program (IODP). The vessel is designed to ultimately drill seven kilometres beneath the seabed, where the Earth's crust is much thinner, and into the Earth's mantle, deeper than any other hole drilled in the ocean thus far.
While the planned depth of the hole is significantly less than the Russian Kola Superdeep Borehole (which reached depth on land), the scientific results are expected to be much more interesting since the regions targeted by ''Chikyū'' include some of the most seismically-active regions of the world. Other deep holes have been drilled by the drill ship JOIDES Resolution during the Deep Sea Drilling Project and the Ocean Drilling Program.
==Operation==
The Japanese part of the IODP program is called , Japanese for "Earth Discovery". ''Chikyū'' is operated by the Centre for Deep Earth Research (CDEX), a subdivision of the Japan Agency for Marine-Earth Science and Technology (JAMSTEC). JAMSTEC also operates the DSV Shinkai, Earth Simulator supercomputer and other marine scientific research projects. CDEX is responsible for the services to support activities including on-board staffing, data management for core samples and logging; implements engineering site surveys; and conducts engineering developments. CDEX contracts with the Mantle Quest Japan Company for the navigation of the ship.
The ''Chikyū Hakken'' program is part of an international scientific collaborative effort with scientists from the United States, ECORD, a consortium consisting of several European countries and Canada, China, South Korea, Australia and New Zealand (ANZIC), and India.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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