Central core in satellites: Understanding thermal history, core formation, and origin of intrinsic magnetic field.
| Project/Area Number |
22740285
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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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 |
KIMURA Jun 北海道大学, 大学院・理学研究院, 研究員 (00536138)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | 惑星科学 / 衛星 / 内部構造 / 磁場 / 進化 / 熱史 |
|---|
| Research Abstract |
The Ganymede’s interior appears to be clearly differentiated and has a metallic core from the gravitational observation and the existence of the intrinsic magnetic field. But because of its smaller size than the terrestrial planets, Ganymede is difficult to form the metallic core just after the end of accretion. This work proposes that dehydration of pristine hydrous rock-metal-mixed core would trigger complete differentiation in the larger moon during the thermal evolution. In a reasonable range of viscosity is assumed for hydrated rocky core, Ganymede experiences the dehydration of the pristine core and possibly the metallic component could segregates from the rocky materials around 2 Gyr after its accretion.
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Report
(4 results)
Research Products
(32 results)
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[Journal Article]2011
Author(s)
Tomokatsu Morota, Jun-ichi Haruyama, Makiko Ohtake, Tsuneo Matsunaga, Chikatoshi Honda, Yasuhiro Yokota, J un K i m ur a , Yoshiko Ogawa, Naru Hirata, Hirohide Demura, Akira Iwasaki, Takamitsu Sugihara, Kazuto Saiki, Ryosuke Nakamura, Shingo Kobayashi, Yoshiaki Ishihara, Hiroshi Takeda, and Harald Hiesinger
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Journal Title
Earth and Planetary Science Letters
Volume: 302
Pages: 255-266
Related Report
Peer Reviewed
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[Journal Article] 『月惑星探査の来たる10年』検討・第一段階報告2011
Author(s)
大谷栄治, 倉本圭, 今村剛, 寺田直樹, 渡部重十, 荒川政彦, 伊藤孝士, 圦本尚義, 渡部潤一, 木村淳, 高橋幸弘, 中島健介, 中本泰史, 三好由純, 小林憲正, 山岸明彦, 並木則行, 小林直樹, 出村裕英, 大槻圭史
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Journal Title
日本惑星科学会誌「遊星人」
Volume: 20
Pages: 349-365
NAID
Related Report
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[Journal Article] Timing and characteristics of the latest mare eruption on the Moon2011
Author(s)
Tomokatsu Morota, Jun-ichi Haruyama, Makiko Ohtake, Tsuneo Matsunaga, Chikatoshi Honda, Yasuhiro Yokota, Jun Kimura, Yoshiko Ogawa, Naru Hirata, Hirohide Demura, Akira Iwasaki, Takamitsu Sugihara, Kazuto Saiki, Ryosuke Nakamura, Shingo Kobayashi, Yoshiaki Ishihara, Hiroshi Takeda, Harald Hiesinger
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Journal Title
Earth and Planetary Science Letters
Volume: 302
Issue: 3-4
Pages: 255-266
DOI
Related Report
Peer Reviewed
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[Presentation] 惑星科学研究センター(CPS)によるスクール・実習・研究会の企画・開催への支援の取り組み2011
Author(s)
木村淳, 中川義次, 林祥介, 木村宏, 杉山耕一朗, 高橋芳幸, 西澤誠也, 鈴木絢子, 谷川享行, 山田耕, 納田明達, 惑星科学研究センター
Organizer
日本惑星科学会2011年秋季講演会
Place of Presentation
相模女子大学(相模原市)
Year and Date
2011-10-24
Related Report
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[Presentation] SELENE-2における月表層の熱流量観測計画2011
Author(s)
田中智, 木村淳, 小川和律, 宮原ひろ子, 小林泰三, Tilman Spohn, Matthias Grott, Tim van Zoest, Axel Hagermann
Organizer
JpGU Meeting 2011
Place of Presentation
幕張メッセ(千葉市)
Year and Date
2011-05-23
Related Report
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