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 |
Section | 一般 |
Research Field |
Solid earth and planetary physics
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Research Institution | Japan Agency for Marine-Earth Science and Technology |
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)
|
Project Period (FY) |
2011-04-01 – 2014-03-31
|
Project Status |
Completed (Fiscal Year 2013)
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Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2013: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2012: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2011: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
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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 / 降伏応力 / クラトン / 変動帯 / 粘性率 / 造山帯 / 三次元 / 地球史 |
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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Report
(5 results)
Research Products
(59 results)
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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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