Budget Amount *help |
¥19,500,000 (Direct Cost: ¥15,000,000、Indirect Cost: ¥4,500,000)
Fiscal Year 2009: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2008: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Fiscal Year 2007: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
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Research Abstract |
We investigated core sediment from ponds and lakes along the coast of southwestern Japanese Islands along the Nankai Trough to reveal pre-historical evidence of Nankai earthquakes. The average recurrence interval of tsunami events were 300-350 years. This value was much larger than the value, 100-200 years, of the historical events. This result implies that relatively large Nankai earthquakes only have been recorded in the sediments.
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