| Project/Area Number |
25887035
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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 | Kyoto University |
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Principal Investigator |
KAZAMA Takahito 京都大学, 理学(系)研究科(研究院), 助教 (20700363)
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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 | 重力観測 / 地震 / 火山活動 / 陸水擾乱 / 桜島 / 浅間山 / 地下水 / 土壌水分 / 火山噴火 / 重力変化 / 阿蘇山 / 地殻変動 / 火山 / 噴火 / 陸水 / アラスカ |
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| Outline of Final Research Achievements |
In order to obtain gravity changes associated with spatiotemporal mass variations due to earthquakes and volcanic activities, we corrected observed gravity data for hydrological gravity disturbances with a high degree of precision. For Sakurajima Volcano, we reproduced the hydrological disturbances of the observed relative gravity data within 8 micro-gal, using an empirical hydrological model. For Asama Volcano, we retrieved the 5-micro-gal gravity signal due to magma movement during the 2004 eruptions, by correcting the hydrological disturbances observed by absolute gravimeters using a physical hydrological model. Gravity measurements will enable us to monitor mass redistributions related to earthquakes and volcanism, by means of these hydrological models for the hydrological disturbance corrections.
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