2013 Fiscal Year Final Research Report
Studies on the thermal and mechanical interaction between the supercontinent cycle and mantle convection using numerical models
| Project/Area Number |
23340132
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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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 | Japan Agency for Marine-Earth Science and Technology |
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Principal Investigator |
YOSHIDA Masaki 独立行政法人海洋研究開発機構, 地球内部ダイナミクス領域, 主任研究員 (00371716)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | マントル対流 / 数値シミュレーション / 超大陸 / 大陸リソスフェア / パンゲア / プルーム / 超大陸サイクル / 大陸移動 |
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| Research Abstract |
In this study, I performed numerical simulations of mantle convection with the continental lithosphere in a three-dimensional spherical-shell. Results reveal that a highly viscous supercontinent previously located at the top surface of the mantle breaks up, and the continental blocks drift, and finally they newly gather in one place to form a new supercontinent after about six hundred million years from the beginning of simulation. This result indicates that I could reproduce the actual behavior of the supercontinent cycle (i.e., supercontinent cycle) in the computer. I found that the driving force of the supercontinental cycle is not only the thermally convective motion in the mantle, but also plate boundary forces resulting from a complex kinematic interaction among all the plates, i.e., continental plates and the surrounding oceanic plates on the earth.
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[Presentation] Mantle dynamics and seafloor subsidence2013
Author(s)
Claudia Adam, Valérie Vidal, Scott D. King, André Jalobeanu, Masaki Yoshida, Michel Rabinowicz, and Anne Briais
Organizer
2013 Fall Meeting, Moscone Convention Center
Place of Presentation
San Francisco, CA
Year and Date
2013-12-11
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[Remarks] New Scientist (Reed Business Information Ltd.), 17 September 2011, Issue number 2830, p16, The next Pangaea will have pieces missing.(ウェブ記事)
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[Remarks] 『 53rd Science & Technology Week 』,「地球のマントル, 地下深くの流れ」 , 2012年3月 , 文部科学省 科学技術団体連合発行.(刊行物)
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[Remarks] JAMSTEC オリジナルカレンダー , 2013年度版 , 海洋研究開発機構発行.(刊行物)
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[Remarks] フジテレビ , 土曜プレミアム「池上彰スペシャル 世界が変わった日～あの震災から 1年～」 , 2012年3月10日(土)放送.(テレビ番組監修)
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[Remarks] NHK E テレ , NHK 高校講座「地学基礎 第20回 地球内部の動き」 , 2013年9月25日(水)放送.(テレビ番組・書籍への素材提供)
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[Remarks] 佐藤勝彦著 , 『気が遠くなる未来の宇宙のはなし』 , 宝島社 , 2013年刊行.(テレビ番組・書籍への素材提供)
