2015 Fiscal Year Final Research Report
Imaging conduit of active volcanoes using reciprocity theorem
| Project/Area Number |
25800244
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Solid earth and planetary physics
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
Aoki Yosuke 東京大学, 地震研究所, 助教 (90376624)
|
|---|
| Project Period (FY) |
2013-04-01 – 2016-03-31
|
| Keywords | 地震波干渉法 / 地震波速度変化 / 非線形弾性 |
|---|
| Outline of Final Research Achievements |
Recent emergence of seismic interferometry using random signals allows us to delineate temporal changes of seismic velocities associated with earthquakes and volcanic activity. During this project, we delineated shallow seismic velocity changes associated with the 2011 Tohoku-oki earthquake to find that seismic velocity changes do not correlated with neither static nor dynamic stress changes. Instead, velocity changes tend to be larger around active volcanoes. We also discussed briefly the origin of seismic velocity changes from theoretical point of view.
|
| Free Research Field |
固体地球物理学
|
