High-velocity impact of micrometeorites: implication for evolution of asteroid regolith
Project/Area Number |
26800235
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Solid earth and planetary physics
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Research Institution | Okayama University |
Principal Investigator |
Shimaki Yuri 岡山大学, 惑星物質研究所, 助手 (60710548)
|
Project Period (FY) |
2014-04-01 – 2017-03-31
|
Project Status |
Completed (Fiscal Year 2016)
|
Budget Amount *help |
¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
|
Keywords | 衝撃変成 / クレーター / 普通コンドライト / 小惑星 / 二段式軽ガス銃 / 衝突クレーター |
Outline of Final Research Achievements |
We carried out high-velocity impact-experiments of metal and silicate projectile into regolith of silicates including ordinary chondrites by vertical and horizontal two-stage light-gas-gun in the Institute of Space and Astronautical Science to examine crater formation process and physicochemical evolution of regolith on asteroid surface. A new vacuum impregnation system for embedding crater on regolith was developed. Impact products distribute at depth of two times of projectile diameter from surface. Impact melt consists of sub-micron silicates and metal spherules with trace-element abundance similar to bulk composition.
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Report
(4 results)
Research Products
(9 results)
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[Presentation] Shock Metamorphism of Olivine Monolith and Regolith Impacted by Steel2016
Author(s)
Shimaki, Y., Kunihiro, T., Suzuki, A. I., Hasegawa, S., and Nakamura, E.
Organizer
47th Lunar and Planetary Science Conference
Place of Presentation
The Woodlands, Texas, USA
Year and Date
2016-03-21
Related Report
Int'l Joint Research
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[Presentation] Experimental study on shock metamorphism of silicate regolith2016
Author(s)
Shimaki, Y., Kunihiro, T., Suzuki, A. I., Hasegawa, S., and Nakamura, E.
Organizer
Misasa International Symposium 2016 (Misasa VI)
Place of Presentation
BlancArt Misasa, Tottori, Japan
Year and Date
2016-03-08
Related Report
Int'l Joint Research
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[Presentation] Voyage of the Chelyabinsk meteorite aboard an icy comet host, from the asteroid belt to near-Earth orbit2016
Author(s)
Nakamura, E., Kunihiro, T., Kitagawa, H., Kobayashi, K., Ota, T., Sakaguchi, C., Shimaki, Y., Tanaka, R., Tsujimori, T., Yamanaka, M., Bebout, G. E., Grokhovsky, V. I., Koroleva, O. N., Litasov, K. D., and Malkovets, V.
Organizer
Misasa International Symposium 2016 (Misasa VI)
Place of Presentation
BlancArt Misasa, Tottori, Japan
Year and Date
2016-03-08
Related Report
Int'l Joint Research
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[Presentation] The mineralogy of the Chelyabinsk meteorite ~ Implication from micro to nano-scale geochemical reservoirs ~2016
Author(s)
Kobayashi, K., Ota, T., Shimaki, Y., Tsujimori, T., Kunihiro, T., Kitagawa, H., Sakaguchi, C., Tanaka, R., Yamanaka, M., Bebout, G. E., Grokhovsky, V. I., Koroleva, O. N., Litasov, K. D., Malkovets, V., and Nakamura, E.
Organizer
Misasa International Symposium 2016 (Misasa VI)
Place of Presentation
BlancArt Misasa, Tottori, Japan
Year and Date
2016-03-08
Related Report
Int'l Joint Research
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[Presentation] Lithium in UHP Metasedimentary Garnets from Lago di Cignana, Italy: Coupled Substitutions and the Role of Accessory Phases2015
Author(s)
Bebout, G. E., Tsujimori, T., Ota, T., Shimaki, Y., Kunihiro, T., Carlson, W. D., and Nakamura, E.
Organizer
Geological Society of America Annual Meeting
Place of Presentation
Baltimore, Maryland, USA
Year and Date
2015-11-01
Related Report
Int'l Joint Research
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