| Project/Area Number |
23360403
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Earth system and resources enginnering
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| Research Institution | Center for Environmental Science in Saitama |
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Principal Investigator |
SHIRAISHI Hidetaka 埼玉県環境科学国際センター, 土壌・地下水・地盤担当, 担当部長 (60415396)
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| Co-Investigator(Kenkyū-buntansha) |
ASANUMA Hiroshi 産業技術総合研究所, 地圏資源環境研究部門, 上席主任研究員 (50250717)
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| Co-Investigator(Renkei-kenkyūsha) |
HACHINOHE Shoichi 埼玉県環境科学国際センター, 土壌・地下水・地盤担当, 専門研究員 (70415397)
ISHIYAMA Takashi 埼玉県環境科学国際センター, 土壌・地下水・地盤担当, 専門研究員 (80297621)
HAMAMOTO Hideki 埼玉県環境科学国際センター, 土壌・地下水・地盤担当, 主任 (40511978)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2011: ¥13,130,000 (Direct Cost: ¥10,100,000、Indirect Cost: ¥3,030,000)
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| Keywords | 地球計測 / 微動探査法 / 物理探査 / S波速度構造 / 指向性 / 平面波 |
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| Research Abstract |
This research has aimed to develop a new estimation technique that allows us to evaluate subsurface structures including structural boundaries or gradient layers within sensor arrays which used in microtremor survey method (MSM). Such heterogeneity decreases accuracy of the current MSM. We have focused on vertical directivities of sensor arrays, and elucidated some of its characteristics and controllability, and spotted an index function which indicates heterogeneity within arrays. Though we tried to arbitrarily control the vertical directivities through deforming sensor placement, it was found that it is necessary to further consideration.
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