| Project/Area Number |
25887052
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | National Research Institute for Earth Science and Disaster Prevention |
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Principal Investigator |
SAWAZAKI Kaoru 独立行政法人防災科学技術研究所, 観測・予測研究領域 地震・火山防災研究ユニット, 特別研究員 (30707170)
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| Project Period (FY) |
2013-08-30 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | Matched Filter法 / Hi-net / 前震 / 微小地震活動 / テンプレート波形解析 / 高周波地震動 |
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| Outline of Final Research Achievements |
Applying the Matched Filter technique to Hi-net continuous seismogram record, I detected microearthquakes (magnitude smaller than 1) which had not been detected through the conventional earthquake relocation method. About 3.8 million events were detected during the time period from October 2000 to June 2014. I examined a relationship between the activity of the microearthquakes and the occurrence of several large inland earthquakes. I concluded that the activation of microearthquakes is not necessarily followed by a large earthquake, which implies that prediction of large earthquake from its micro-foreshock activity is still difficult.
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