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Japan Trench
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The Japan Trench is an oceanic trench, a part of the Pacific Ring of Fire, in the floor of the northern Pacific Ocean off northeast Japan. It extends from the Kuril Islands to the Bonin Islands and is at its deepest. It is an extension of the Kuril-Kamchatka Trench to the north and the Izu-Ogasawara Trench to its south with a length of .〔http://www.d-food.jp/trough.html〕 This trench is created when the oceanic Pacific plate subducts beneath the continental Okhotsk Plate. The subduction process causes bending of the downgoing plate, creating a deep-sea trench. Continuing movement on the subduction zone associated with the Japan Trench is one of the main causes of tsunamis and earthquakes in northern Japan, including the megathrust Tōhoku earthquake and resulting tsunami that occurred on 11 March 2011.〔(【引用サイトリンク】title=Magnitude 8.9 – NEAR THE EAST COAST OF HONSHU, JAPAN 2011 March 11 05:46:23 UTC )〕
==Exploration==
*On 11 August 1989, the Shinkai 6500 three-person submersible descended to while exploring the Japan Trench.
*In October 2008, a UK-Japan team discovered a shoal of fish, ''Pseudoliparis amblystomopsis'' at a depth of in the trench, these are believed to be the deepest living fish ever filmed. The Bathyscaphe Trieste observed bottom-dwelling fish at the base of the Marianas Trench/Challenger deep at 10,916 m (35,814 ft).〔.〕
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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