2013 Fiscal Year Final Research Report
Development of fault-rupture risk assessment method by using stress state
| Project/Area Number |
23740347
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | Hot Springs Research Institute of Kanagawa Prefecture |
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Principal Investigator |
YUKUTAKE Yohei 神奈川県温泉地学研究所, その他部局等, 研究員 (20435853)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 活断層 / 応力場 / Slip tendency / ポテンシャル評価 |
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| Research Abstract |
To reflect information about stress state around active faults in fault-rupture risk assessment, we estimated slip tendencies of active faults on the basis of present-day tectonic stress field. We found that that most of the active faults have high slip tendency values for the tectonic stress field. Since a weak correlation between slip tendency and earthquake risk on active faults were observed by comparing slip tendency with quantifiable properties of active faults, such as elapsed time since the most recent event, slip tendency analysis may not be useful for evaluating earthquake risk on active faults. On the other hand, slip tendency may be a better means of evaluating fault activity or be useful for evaluating potential of large earthquake by combining with other information, such as geological data and detailed crustal structure.
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