Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1991-09-01 |
タイトル |
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タイトル |
VECTOR ANOMALIES OF THE GEOMAGNETIC FIELD AROUND THE KERGUELEN PLATEAU |
言語 |
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言語 |
eng |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
departmental bulletin paper |
ID登録 |
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ID登録 |
10.15094/00002698 |
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ID登録タイプ |
JaLC |
ページ属性 |
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内容記述タイプ |
Other |
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内容記述 |
P(論文) |
記事種別(英) |
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en |
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ABSTRACT |
論文名よみ |
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その他のタイトル |
VECTOR ANOMALIES OF THE GEOMAGNETIC FIELD AROUND THE KERGUELEN PLATEAU |
著者名よみ |
ノギ, ヨシフミ
セアマ, ノブカズ
イセザキ, ノブヒロ
ハヤシ, タモツ
カミヌマ, カツタダ
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著者名(英) |
NOGI, Yoshifumi
SEAMA, Nobukazu
ISEZAKI, Nobuhiro
HAYASHI, Tamotsu
KAMINUMA, Katsutada
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著者所属(英) |
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en |
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Meteorological Research Institute |
著者所属(英) |
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en |
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Ocean Research Institute, University of Tokyo |
著者所属(英) |
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en |
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Faculty of Science, Chiba University |
著者所属(英) |
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en |
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Geographical Survey Institute |
著者所属(英) |
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en |
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National Institute of Polar Research |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
The directions of two-dimensional magnetic structures around the Kerguelen Plateau were determined by using vector anomalies of the geomagnetic field obtained during the 30th and 31st Japanese Antarctic Research Expeditions. N-S and E-W directions of magnetic structure are deduced in the basin to the east (around 60°S, 88-91°E) and over (around 60°S, 71-88°E) the Kerguelen Plateau. Topographic and structural lineaments bring about N-S and E-W directions of magnetic anomaly lineations over the Kerguelen Plateau. In farther east (around 59°S, east from 91°E), stable NW-SE directions are obtained. The obtained stable NW-SE directions are in good agreement with the already identified geomagnetic anomaly lineations originated from the Southeast Indian Ridge (WEISSEL and HAYES : Antarct. Res. Ser., Vol. 19,Am. Geophys. Union, 165,1972). Stable NE-SW directions in the west (58-61°S, 62-68°E) of the Kerguelen Plateau were newly found in this expedition. Because sea bottom topography and free-air gravity anomalies show no structural offset, stable NE-SW directions are due to the geomagnetic anomaly lineations produced by polarity reversals. NE-SW directions obtained from vector anomalies of the geomagnetic field support presumptive directions of the geomagnetic anomaly lineations originated from an ancient abandoned ridge, that is, the mid-ocean ridge between India and Antarctica from Late Jurassic (160Ma) to Middle Cretaceous (96Ma) (POWELL et al. : Tectonophysics, 155,261,1988). These results may provide detailed kinematics of the growth of the Indian Ocean. |
雑誌書誌ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA1072335X |
書誌情報 |
Proceedings of the NIPR Symposium on Antarctic Geosciences
巻 5,
p. 160,
発行日 1991-09
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出版者 |
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出版者 |
National Institute of Polar Research |