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Thermal history of chondrules during shock-wave heating
https://doi.org/10.15094/00006076
https://doi.org/10.15094/00006076350333f8-c7d9-4e03-bff8-bf6751b5e6ff
名前 / ファイル | ライセンス | アクション |
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KJ00002499485 (1.2 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 2005-03-01 | |||||
タイトル | ||||||
タイトル | Thermal history of chondrules during shock-wave heating | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | chondrule formation, shock-wave heating, heating rate | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15094/00006076 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
論文名よみ | ||||||
その他のタイトル | Thermal history of chondrules during shock-wave heating | |||||
著者名(英) |
Miura,Hitoshi
× Miura,Hitoshi× Nakamoto,Taishi |
|||||
著者所属(英) | ||||||
en | ||||||
Graduate School of Pure and Applied Sciences, University of TCenter for Computational Sciences, University of Tsukubasukuba/ | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Evaporation during chondrule melting may have resulted in depletion of volatile elements in chondrules. However, no evidence for a large degree of heavy-isotope enrichment has been reported in chondrules. In order to meet this observed constraint, the rapid heating rate at temperatures below the silicate solidus is required to form chondrules. We have developed a new shock-wave heating model with the radiative transfer among dust particles and calculated the thermal history of chondrules. We have found that optically-thin shock waves for the thermal continuum emission from dust particles can meet the high heating rate constraint, because the dust thermal emission does not keep the dust particles high temperature for a long time in the pre-shock region and dust particles are abruptly heated by the gas drag heating in the post-shock region. We have also found a trend that the optically-thick shock waves lead to rapid heating in the pre-shock region and rapid cooling in the post-shock region. On the contrary, the optically-thin shock waves have a tendency to cause slow heating in the pre-shock region and slow cooling in the post-shock region. Since these two tendencies seem to be inconsistent with observational constraints (rapid heating and slow cooling for chondrule formation), more careful quantitative studies are needed in the future to see if the shock-wave heating model can reproduce the observations. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11182426 | |||||
書誌情報 |
Antarctic meteorite research 巻 18, p. 239-252, 発行日 2005-03 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |