Physical properties of supercritical fluids in the crust and the effect on the earthquake occurrence: A molecular dynamics study
| Project/Area Number |
26610172
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Petrology/Mineralogy/Economic geology
|
|---|
| Research Institution | National Institute for Materials Science |
|---|
Principal Investigator |
Sakuma Hiroshi 国立研究開発法人物質・材料研究機構, 機能性材料研究拠点, 主任研究員 (20400426)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
市來 雅啓 東北大学, 理学研究科, 助教 (80359182)
|
|---|
| Project Period (FY) |
2014-04-01 – 2017-03-31
|
| Project Status |
Completed (Fiscal Year 2016)
|
| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
|
|---|
| Keywords | 電気伝導度 / 塩水 / 分子動力学計算 / 比抵抗 / 地殻 / マントル / イオンペア / 地殻流体 / 塩化ナトリウム / 状態方程式 / 水 / 二酸化炭素 / 超臨界 |
|---|
| Outline of Final Research Achievements |
Ionic electrical conductivity of NaCl-H2O fluid as a function of pressure (0.2-2.0GPa), temperature (673-2000 K), and NaCl concentration (0.6-9.6 wt %) was investigated using molecular dynamics (MD) simulations based on an H2O molecular model developed by our previous study. Highly conductive zones located from 10 to 15 km depth in intraplate earthquake zones of northern east Japan back arc (Ogawa et al., GRL, 2001) can be interpreted by the presence of NaCl-H2O fluid with the salinity of 4 wt %.
|
Report
(4 results)
Research Products
(12 results)
