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The shape of meteorites
https://nipr.repo.nii.ac.jp/records/1223
https://nipr.repo.nii.ac.jp/records/12237e82a169-f4b0-45df-a722-ac3895bc0bb6
名前 / ファイル | ライセンス | アクション |
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KJ00000011749 (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 | 1981-12-01 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | The shape of meteorites | |||||
言語 | ||||||
言語 | eng | |||||
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 | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Hasegawa, Hiroichi
× Hasegawa, Hiroichi |
|||||
著者所属(英) | ||||||
en | ||||||
Department of Physics, Faculty of Science, Kyoto University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The shape of meteorites is described by axial ratio (b/a), where a and b are the longest and the intermediate axial lengths of meteorite, respectively. Used samples are the Yamato meteorites recovered in 1973-1975. Distribution of (b/a) and the average value <b/a> of 0.730 of 930 chondrites except carbonaceous ones are obtained. The results are similar to those of basalt fragments in laboratory impact experiment. Five chondrite showers are also analyzed. Their mass spectra are well represented by power function of fragment mass with the exponents α of 0.95±0.05,0.60±0.05,3.0±0.4,2.5±0.1 and 3.5±0.3. With the assumptions that each shower originated in a single impact, the produced fragments are not lost and the high velocity impact law found by laboratory experiment is applicable to meteorite showers, these showers are of the "core type" destruction with impact energies per unit target mass of (10)^7 erg/g-(10)^8 erg/g. Distributions of (b/a) and the average values <b/a> of each shower resemble each other and also those of all chondrites. Among about 40 achondrites, 29 diogenites belong to one shower with rounded fragment (<b/a>=0.794) and flat mass spectrum (α=0.35+0.02). | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00733561 | |||||
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue 巻 20, p. 292-299, 発行日 1981-12 |