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The magnetic anomaly and NRM directions of Odessa octahedrite
https://doi.org/10.15094/00006035
https://doi.org/10.15094/00006035be7a4dec-a665-449b-b233-2c4905526c94
名前 / ファイル | ライセンス | アクション |
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KJ00000040871 (2.7 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 2003-03-01 | |||||
タイトル | ||||||
タイトル | The magnetic anomaly and NRM directions of Odessa octahedrite | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Odessa | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | magnetization | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | magnetic field | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | magnetic anomaly | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | NRM | |||||
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 | 10.15094/00006035 | |||||
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) | |||||
著者名(英) |
Funaki, Minoru
× Funaki, Minoru× Koshita, Masami× Nagai, Hiroyuki |
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著者所属(英) | ||||||
en | ||||||
National Institute of Polar Research | ||||||
著者所属(英) | ||||||
en | ||||||
Department of Physics, Faculties of Science, Shinshu University | ||||||
著者所属(英) | ||||||
en | ||||||
Department of Physics, Faculties of Science, Shinshu University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The magnetic anomaly of the Odessa octahedrite (3.7 kg, a single crystal) was measured at 1, 5, 10, and 40 cm from the surface using a uniaxial fluxgate magnetometer in a μ-metal magnetic shield environment. The NRM directions of cubic subsamples were measured to take into consideration the role of the octahedron crystallography during AF demagnetization. These results indicated that the observed anomalies are strongly controlled by the shape anisotorpy of the sample rather than the crystallography of the octahedrite, although weak complicated anomalies which may be related to structure appeared above 1 cm from the surface. The natural remanent magnetization of cubic subsamples was controlled by the octahedral γ(111) planes, as demagnetized directions occurred along these planes. Namely, the preferable direction of NRM is the intersection among the great circles of γ(111) crystallographic planes which are consistent with the result obtained by A. Brecher and L. Albright (J. Geomagn. Geoelectr., 29, 379, 1977). The origin of the stable NRM component was investigated using the results of microscopic analysis, thermomagnetic curve and hysteresis parameters. Consequently, we concluded that small amounts of taenite grains and lamellae carry the stable component which is distributed along the octahedral γ(111) planes. | |||||
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 16, p. 220-234, 発行日 2003-03 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |