Earthquake Research Institute and Geophysical Institute, University of Tokyo.
Scripps Institution of Oceanography, Marine Physical Laboratory, University of California
Maizuru Marine Observatory, Japan Meteorological Agency.
Hydrographic Department,
抄録
A total force geomagnetic survey was made in the northwestern Pacific during the US-Japan Scientific Cooperation Cruise of the R/V Argo of the Scripps Institution of Oceanography. In this survey, eleven seamounts were surveyed in detail both magnetically and bathymetrically. Combined with the existing data taken previously by both Japanese and US researchers, revised charts of the total geomagnetic field and its anomaly have been drawn for the area west of 172°E between 24°N and 46°N. The existence of magnetic lineations trending SWW-NEE which were noted previously have been confirmed, and their extension has been noted. They generally disappear as they get closer to the coast, but some seem to penetrate into the Japan Trench area. In the Shikoku Basin, the linear anomalies do not seem to exist. Some magnetic anomaly profiles have been investigated to see if there is any correlation with the anomalies in the Eastern and Central Pacific area. For a definite conclusion, however, good profiles in NNW-SSE direction in the northern Pacific area between 160°E and 180°E would be needed.
日米協同観測計画による上記の地磁気全磁力測量結果及び,現存する日米両国での北西太平洋海域の地磁気データにもとづいて,北緯24°～46°の間,東経172°E以西での地磁気全磁力及びその異常の分布図が得られた.この結果,従来しられたSWW-NEE方向にのびる縞状磁気異常が確認された.このような縞状構造のパターンを,東部太平洋でのN-S方向のそれ関係づけることは,太平洋の生成を知る上に重要であることが示される.
雑誌名
東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo
巻
45
号
3
ページ
799 - 814
発行年
1967-11-30
ISSN
00408972
書誌レコードID
AN00162258
フォーマット
application/pdf
日本十進分類法
453
出版者
東京大学地震研究所
出版者別名
Earthquake Research Institute, University of Tokyo
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Results of Geomagnetic Survey during the Cruise of R/V Argo in Western Pacific 1966 and the Compilation of Magnetic Charts of the Same Area
ji0453013.pdf
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