Re-examination of the thermal history of Mercury and the origin of its intrinsic magnetic field

• Project/Area Number: 19540433
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Solid earth and planetary physics
• Research Institution: Hokkaido University
• Principal Investigator: KURAMOTO Kiyoshi Hokkaido University, 大学院・理学研究院, 教授 (50311519)
• 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
• Project Period (FY): 2007 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥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)
• 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

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.

Research Products

• [Journal Article] ハビタブル惑星の起源,進化,多様性 (2009)
  • Author(s): 倉本圭
  • Journal Title: 天文月報 102 Pages: 184-189
  • NAID: 10024590682
• [Journal Article] Oxygen isotopic evolution in the early solar nebula : Validation of the H_2O transport model, Proc. (2008)
  • Author(s): Fukui, T., Kuramoto, K.
  • Journal Title: 10th International Symposium on Origin of Matter and Evolution of Galaxies Pages: 409-411
  • Peer Reviewed
• [Journal Article] Jacobsen, Mass-independent Oxygen Isotope Variation in the Solar Nebula Reviews (2008)
  • Author(s): Edward D. Young, Kyoshi Kuramoto, Rudolph A. Marcus, Hisayoshi Yurimoto, Stein B.
  • Journal Title: Mineralogy and Geochemistry 68 Pages: 187-218
  • Peer Reviewed
• [Journal Article] 氷が担う原始太陽系星雲のグローバル物質輸送 (2008)
  • Author(s): 福井隆, 倉本圭
  • Journal Title: 低温科学 66 Pages: 83-88
  • Peer Reviewed
• [Journal Article] Thermal evolution of Mercury : Effects of bulk composition on core dynamo and global geomorphology (2008)
  • Author(s): Iwahori, T., Kuramoto, K.
  • Journal Title: Proc. 41 th ISAS Lunar and Planet. Symp. Pages: 39-42
• [Journal Article] Oxygen isotopic evolution in the early solar nebula : Validation of the H2O transnort model (2008)
  • Author(s): Fukui, Takashi
  • Journal Title: Proc. 10th International Symposium on Origin of Matter and Evolution of Galaxies Pages: 409-411
  • Peer Reviewed
• [Journal Article] 氷が担う原始太陽系星雲のグローバル物質輸送 (2008)
  • Author(s): 福井隆
  • Journal Title: 低温科学 66 Pages: 83-88
  • Peer Reviewed
• [Journal Article] Mass-independent Oxygen Isotope Variation in the Solar Nebula (2008)
  • Author(s): Edward D. Young
  • Journal Title: Reviews in Mineralogy and Geochemistry 68 Pages: 187-218
  • Peer Reviewed
• [Journal Article] Remnants of the Early Solar System Water Enriched in Heavy Oxygen Isotopes (2007)
  • Author(s): Naoya Sakamoto, Yusuke Seto, Shoichi Itoh, Kiyoshi Kuramoto, Kiyoshi Fujino, Kazuhide Nagashima, Alexander N. Krot, Hisayoshi Yurimoto
  • Journal Title: Science 317 Pages: 231-233
  • NAID: 120000962320
  • Peer Reviewed
• [Journal Article] 月の熱進化の謎 (Enigmas of the lunar thermal evolution), 遊星人 (2007)
  • Author(s): 倉本圭, 玄田英典, 荒井朋子, 岡田達明, 杉田精司
  • Journal Title: 日本惑星科学会誌 16 Pages: 197-207
  • Peer Reviewed
• [Journal Article] Radial redistribution of solids in an accreting protoplanetary disk : On the effect of variation in adhesive properties between H2O ice and silicate (2007)
  • Author(s): Fukui, T., Kuramoto, K.
  • Journal Title: Proc. 40th ISAS Lunar and Planet. Symp
• [Journal Article] Remnants of the Early Solar System Water Enriched in Heavy Oxygen Isotopes (2007)
  • Author(s): Naoya Sakamoto
  • Journal Title: Science 317 Pages: 231-233
  • Peer Reviewed
• [Journal Article] Radial redistribution of solids in an accreting protoplanetary disk: On the effect of variation in adhesive properties between H2O ice and silicate (2007)
  • Author(s): Takashi Fukui
  • Journal Title: Proc. 40th ISAS Lunar and Planet. Symp. Pages: 174-179
• [Journal Article] 月の熱進化の謎 (2007)
  • Author(s): 倉本 圭
  • Journal Title: 遊星人(日本惑星科学会誌) 16 Pages: 197-207
  • NAID: 110006390027
  • Peer Reviewed
• [Presentation] 回転球殻MHDダイナモ解に対する上部力学的境界条件の影響 (2009)
  • Author(s): 佐々木洋平
  • Organizer: 日本流体力学会2009年度年会
  • Place of Presentation: 東洋大学
  • Year and Date: 2009-09-02
• [Presentation] 原始惑星系円盤のダスト面密度分布の進化:ダストの成長および破壊の効果 (2009)
  • Author(s): 福井隆
  • Organizer: 日本地球惑星科学連合2009年大会
  • Place of Presentation: 千葉幕張
  • Year and Date: 2009-05-21
• [Presentation] 月の分化と長期的熱進化 (2009)
  • Author(s): 倉本圭
  • Organizer: 日本地球惑星科学連合2009年大会
  • Place of Presentation: 千葉幕張
  • Year and Date: 2009-05-17
• [Presentation] Thermal Evolution of Mercury : Implication from Temperature Profile (2009)
  • Author(s): Iwahori, T., Kuramoto, K.
  • Organizer: AOGS 6th Annual General Meeting
  • Place of Presentation: Suntec, Singapore
• [Presentation] Dust Mass Distribution in Protoplanetary Disks : Effect of Dust Growth, Fragmentation, and Inward Drift (2009)
  • Author(s): Fukui, T., Tanaka, H., Kuramoto, K.
  • Organizer: AOGS 6th Annual General Meeting
  • Place of Presentation: Suntec, Singapore
• [Presentation] Growth, Fragmentation and Inward Drift of Dust in Protoplanetary Disks : Implications for Chondritic Components (2009)
  • Author(s): Fukui, T., Kuramoto, K.
  • Organizer: 72nd Annual Meeting of the Meteoritical Society
• [Presentation] 惑星系最初期進化におけるダスト衝突破壊過程の重要性 (2009)
  • Author(s): 福井隆
  • Organizer: 日本惑星科学会2009年秋季講演会
  • Place of Presentation: 東京本郷
• [Presentation] Dust mass distribution in Protoplanetary Disks : effect of dust growth, fragmentation, and inward drift (2009)
  • Author(s): 福井隆
  • Organizer: AOGS 6th Annual General Meeting
  • Place of Presentation: シンガポール
• [Presentation] Growth, fragmentation, and inward drift of dust in protoplanetary disks : Implication for chondritic components (2009)
  • Author(s): 福井隆
  • Organizer: 72nd Annual Meeting of the Meteoritical Society
  • Place of Presentation: フランス
• [Presentation] Collisional fragmentation of dust as a necessary step in early solar system evolution (2009)
  • Author(s): 福井隆
  • Organizer: Experimentation and Modeling in Cosmochemistry
  • Place of Presentation: フランス
• [Presentation] Thermal Evolution of Mercury : Implication from Temperature Profile Simulation (2009)
  • Author(s): 岩堀智子
  • Organizer: AOGS 6th Annual General Meeting
  • Place of Presentation: シンガポール
• [Presentation] 水星の表面温度分布:熱構造への示唆 (2009)
  • Author(s): 岩堀智子
  • Organizer: 日本惑星科学会2009年秋季講演会
  • Place of Presentation: 東京本郷
• [Presentation] ダスト落下を考慮した原始惑星系円盤の固体面密度分布の進化 (2008)
  • Author(s): 福井隆
  • Organizer: 日本惑星科学会2008年秋季講演会
  • Place of Presentation: 九州大学箱崎キャンパス
  • Year and Date: 2008-11-01
• [Presentation] 回転MHDダイナモにおける力学的境界条件の影響 (2008)
  • Author(s): 佐々木洋平
  • Organizer: 日本流体力学会年会
  • Place of Presentation: 神戸大学六甲台キャンパス
  • Year and Date: 2008-09-07
• [Presentation] 水星熱進化の組成依存性 : 磁場および地形への影響 (2008)
  • Author(s): 岩堀智子
  • Organizer: 第41回月惑星シンポジウム
  • Place of Presentation: 宇宙航空研究開発機構相模原キャンパス
  • Year and Date: 2008-08-06
• [Presentation] Simultaneous Enhancement of Water Vapor and Silicate Dust in the In ner Solar Nebula : Implication for the Small Oxygen Isotopic Variation of Chondrules (2008)
  • Author(s): Fukui Takashi
  • Organizer: 71st Annual Meeting of the Meteoritical Society
  • Place of Presentation: 松江市
  • Year and Date: 2008-06-28
• [Presentation] 下端に粘着条件・上端に応力無し条件を課した回転球殻MHDダイナモ計算 (2008)
  • Author(s): 佐々木洋平
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 幕張メッセ
  • Year and Date: 2008-05-28
• [Presentation] ダスト再配置に伴う原始惑星系円盤の固体面密度分布の進化 (2008)
  • Author(s): 福井隆
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 幕張メッセ
  • Year and Date: 2008-05-28
• [Presentation] 月惑星科学にもたらす革新 (2008)
  • Author(s): 倉本圭
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 幕張メッセ
  • Year and Date: 2008-05-28
• [Presentation] A possible origin for the -3/2 power law distribution of solids in the solar nebula, League City, U. S., March, 2008. (2008)
  • Author(s): Takashi Fukui
  • Organizer: 39th Lunar and Planetary Science Conference
  • Place of Presentation: League City, U. S.
  • Year and Date: 2008-03-11
• [Presentation] 下端に粘着条件・上端に応力無し条件を課した回転球殻MHDダイナモ計算 (2008)
  • Author(s): 佐々木洋平, 竹広真一, 林祥介, 倉本圭
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 幕張, 千葉市
• [Presentation] 放射性熱源の地殻濃集の水星熱史への影響 (2007)
  • Author(s): 岩堀智子
  • Organizer: 日本惑星科学会
  • Place of Presentation: 高知大学
  • Year and Date: 2007-09-26
• [Presentation] 原始惑星系円盤における固体成分の再配分:コンドライトの組織的・組成的特徴からの制約 (2007)
  • Author(s): 福井 隆
  • Organizer: 日本惑星科学会
  • Place of Presentation: 高知大学
  • Year and Date: 2007-09-25
• [Presentation] 水の再分配に伴う原始惑星系円盤の酸素同位体組成進化 (2007)
  • Author(s): 福井 隆
  • Organizer: 日本地球惑星科学連合2007年大会
  • Place of Presentation: 幕張メッセ
  • Year and Date: 2007-05-24
• [Presentation] 太陽系の始原水の痕跡:始原的隕石から発見したO-17とO-18に富む物質 (2007)
  • Author(s): 坂本直哉
  • Organizer: 日本地球惑星科学連合2007年大会
  • Place of Presentation: 幕張メッセ
  • Year and Date: 2007-05-23
• [Presentation] 還元的な組成を持つ水星の熱史と中心核ダイナモによる固有磁場生成の可能性 (2007)
  • Author(s): 広瀬佑介
  • Organizer: 日本地球惑星科学連合2007年大会
  • Place of Presentation: 幕張メッセ
  • Year and Date: 2007-05-22
• [Presentation] 物質科学的原始惑星系円盤進化論の展開 (2007)
  • Author(s): 倉本 圭
  • Organizer: 日本地球惑星科学連合2007年大会
  • Place of Presentation: 幕張メッセ
  • Year and Date: 2007-05-19
• [Book] 第4章月および惑星「地球化学講座第2巻宇宙・惑星化学」松田准一・以本尚義編 (2008)
  • Author(s): 倉本圭
  • Total Pages: 291
  • Publisher: 培風館
• [Book] Lyons, Origin and Evolution of Oxygen Isotopic Compositions of the Solar System (2007)
  • Author(s): Hisayoshi Yurimoto, Kiyoshi Kuramoto, Alexander N. Krot, Edward R. D. Scott, Jeffrey N. Cuzzi, Mark H. Thiemens, James, R.
  • Publisher: University of Arizona Press