| Budget Amount *help |
¥25,090,000 (Direct Cost: ¥19,300,000、Indirect Cost: ¥5,790,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2017: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
Fiscal Year 2016: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
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| Outline of Final Research Achievements |
This study estimated long-term (> 1000 years) crustal movements, which is necessary to clarify mechanism of megathrust earthquake cycles, on the basis of analyses of incised valley fills in alluvial plains along the Sanriku coast, near the source region of 2011 Tohoku-oki earthquake. Sedimentary analyses and radiocarbon dating showed distribution of shallow marine sediments in four alluvial plains along the Sanriku coast during the last ten thousand years. The distribution of shallow marine sediment and sediment stacking pattern indicate that millennial-scale crustal movements are characterized as subsidence along the central to southern Sanriku coast and relative uplift along the northern coas.
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