| Project/Area Number |
21340136
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Meteorology/Physical oceanography/Hydrology
|
|---|
| Research Institution | Nagaoka University of Technology |
|---|
Principal Investigator |
AZUMA Nobuhiko 長岡技術科学大学, 工学部, 教授 (70182996)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
ITO Yoshiro 長岡技術科学大学, 工学部, 教授 (60176378)
AKETAGAWA Masato 長岡技術科学大学, 工学部, 教授 (10231854)
TAKATA Morimasa 長岡技術科学大学, 工学部, 助教 (50377222)
|
|---|
| Project Period (FY) |
2009 – 2011
|
| Project Status |
Completed (Fiscal Year 2011)
|
| Budget Amount *help |
¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000)
Fiscal Year 2011: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2010: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2009: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
|
|---|
| Keywords | 環境変動 / 極地 / 超精密計測 / 気候変動 / 氷床流動 / 立相変調ホモダイン干渉計 / 氷のクリープ / 粒界拡散 / 位相変調ホモダイン干渉計 |
|---|
| Research Abstract |
Grain growth experiments performed using artificial ice and it was found that the activation energy for the grain boundary migration was 110. 120 kJ mol^<-1>, which is twice that for the self-diffusion of ice. An ice creep strain rate measurement system with an uncertainty of order less than 10-10 s-1 and a minimum measurement time of 10 min is developed. The ice specimen of interest is set in a cold cell, with a set-point temperature and maximum stability of-30 to-10℃and±20 mK or less, respectively. A modified phase modulation homodyne interferometer, the supporting material of which is ultralow-thermal-expansion glass, is combined with the system to measure the ice deformation with the resolution of nanometer scale or less.
|
