Re-examination of the thermal history of Mercury and the origin of its intrinsic magnetic field
| Project/Area Number |
19540433
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | Hokkaido University |
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Principal Investigator |
KURAMOTO Kiyoshi Hokkaido University, 大学院・理学研究院, 教授 (50311519)
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| Research Collaborator |
SASAKI Youhei 京都大学, 大学院・理学研究科, 職員
FUKUI Takashi 北海道大学, 大学院・理学院・博士後期課程
IWAHORI Tomoko 北海道大学, 大学院・理学院・博士後期課程
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2007: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | ダスト / 原始惑星系星雲 / 固有磁場 / 水星 / 混合距離理論 / 熱史 / 熱源 / 起源 / マントル対流 |
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| Research Abstract |
The bulk composition of Mercury estimated from a model for the solar nebula evolution is adopted for the numerical and theoretical analysis of the thermal history and dynamo action of this innermost planet. The mantle components are probably more viscous than the previous estimates, which slows down the growth of solid inner core. The release of light element from the slowly growing inner core possibly induces the convection of outer liquid core with generating a moderate dynamo action and the present weak intrinsic magnetic field. These results provide a basis for the interpretation of data acquired by the current and future Mercury exploration missions.
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Report
(4 results)
Research Products
(43 results)
