Numerical simulations for the formation of dynamic decollement and subduction plate interface
| Project/Area Number |
18K13643
|
|---|
| Research Category |
Grant-in-Aid for Early-Career Scientists
|
| Allocation Type | Multi-year Fund |
|---|
| Review Section |
Basic Section 17040:Solid earth sciences-related
|
|---|
| Research Institution | Japan Agency for Marine-Earth Science and Technology |
|---|
Principal Investigator |
Bauville Arthur 国立研究開発法人海洋研究開発機構, 付加価値情報創生部門(数理科学・先端技術研究開発センター), 研究員 (90811498)
|
|---|
| Project Period (FY) |
2018-04-01 – 2021-03-31
|
| Project Status |
Completed (Fiscal Year 2020)
|
| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
|
|---|
| Keywords | accretionary prism / critical taper theory / numerical simulations / geodynamics / metamorphism / fault weakening / fold-and-thrust belts / pressure / pressure-to-depth / structural style / numerical simulation / decollement / plate boundary |
|---|
| Outline of Final Research Achievements |
During this project、 I elucidated some aspects of the mechanics of accretionary prisms and the formation of plate boundary fault. In Furuichi et al. (2018), we reavealed that stress patterns in granular media affect the dynamics of thrusting. In Bauville et al. (2020), we presented analytical solutions and numerical simulations that shed light on the formation of decollement faults.
The second part of the project, which treats of the dynamics of convergent tectonic zone was initially planned as a modeling study. However, I deviated from this initial goal as new interesting data became available. Thus, in Bauville and Yamato (2020), we proposed a new method of pressure-to-depth conversion for metamorphic rocks.
I published two articles as a first-author and three articles as a collaborator. I also presented the results in national and international conferences (JpGU and EGU general meeting). Thank to the Kakenhi budget I also visited my colleagues at the University of Rennes (France).
|
| Academic Significance and Societal Importance of the Research Achievements |
In this project, we investigated how the faults, on which earthquakes and tsunami happen, are created and how that affects the growing land. We also proposed a new method that contributes to a hot debate in Earth Sciences over the interpretation of the rock pressure record.
|
Report
(4 results)
Research Products
(8 results)
