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Transient Uplift After a 17th-Century Earthquake Along the Kuril Subduction Zone

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Science  10 Dec 2004:
Vol. 306, Issue 5703, pp. 1918-1920
DOI: 10.1126/science.1104895

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Abstract

In eastern Hokkaido, 60 to 80 kilometers above a subducting oceanic plate, tidal mudflats changed into freshwater forests during the first decades after a 17th-century tsunami. The mudflats gradually rose by a meter, as judged from fossil diatom assemblages. Both the tsunami and the ensuing uplift exceeded any in the region's 200 years of written history, and both resulted from a shallow plate-boundary earthquake of unusually large size along the Kuril subduction zone. This earthquake probably induced more creep farther down the plate boundary than did any of the region's historical events.

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