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Japan Median Tectonic Line
, also Median Tectonic Line (MTL), is Japan's longest fault system. The MTL begins near Ibaraki Prefecture, where it connects with the Itoigawa-Shizuoka Tectonic Line (ISTL) and the Fossa Magna. It runs parallel to Japan's volcanic arc, passing through central Honshū to near Nagoya, through Mikawa Bay, then through the Inland Sea from the Kii Channel and Naruto Strait to Shikoku along the Sadamisaki Peninsula and the Bungo Channel and Hōyo Strait to Kyūshū.〔
The sense of motion on the MTL is right-lateral strike-slip, at a rate of about 5–10 mm/yr.〔Okada, A., On the Quaternary faulting along the Median Tectonic Line, in ''Median Tectonic Line'' (in Japanese with English abstract), edited by R. Sugiyama, pp. 49-86, Tokai Univ. Press, Tokyo, 1973.〕 This sense of motion is consistent with the direction of oblique convergence at the Nankai Trough. The rate of motion on the MTL is much less than the rate of convergence at the plate boundary, making it difficult to distinguish the motion on the MTL from interseismic elastic straining in GPS data.〔Miyazaki, S. and Heki, K. (2001) Crustal velocity field of southwest Japan: Subduction and arc-arc collision, ''Journal of Geophysical Research'',vo. 106, no. B3.〕
==Notable earthquakes==
The Great Hanshin earthquake occurred on the Nojima Fault, a branch of the MTL. Approximately 6,434 people lost their lives; about 4,600 of them were from Kobe. It caused approximately ten trillion yen ($100 billion) in damage, 2.5% of Japan's GDP at the time.
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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