Electromagnetic response of the mantle to long-period geomagnetic variations over the globe

• Honkura Yoshimori

  Department of Earth and Planetary Sciences, Tokyo Institute of Technology

• Matsushima Masaki

  Department of Earth and Planetary Sciences, Tokyo Institute of Technology

書誌事項

タイトル別名

• Electromagnetic response of the mantle

抄録

Long-period electromagnetic response must be estimated to derive information on the electrical conductivity distribution within the deep mantle of the Earth. For this, we estimated the electromagnetic response function for long-period geomagnetic variations, on the basis of the P₁ approximation. The data used for analyses are geomagnetic daily mean values for 10 years (1965-1974) from 59 stations distributed over the globe and for about 20 years (1960-1980) from 9 stations. It turned out that the P₁ approximation generally holds except for the periods corresponding to annual and semi-annual variations. We also found that accurate estimation is difficult for periods longer than a few years, probably because of contamination due to secular variations of core origin.

収録刊行物

• Ｅａｒｔｈ，　Ｐｌａｎｅｔｓ　ａｎｄ　Ｓｐａｃｅ

  Ｅａｒｔｈ，　Ｐｌａｎｅｔｓ　ａｎｄ　Ｓｐａｃｅ 50 (8), 651-662, 1998

  地球電磁気・地球惑星圏学会 、公益社団法人 日本地震学会、特定非営利活動法人 日本火山学会、日本測地学会、日本惑星科学会

キーワード

• Space and Planetary Science
• Geology

詳細情報

• CRID: 1390001206511475456
• NII論文ID: 10003735744
• NII書誌ID: AA11211921
• DOI: 10.1186/bf03352160
• ISSN: 18805981
• ISSN: 13438832
• NDL書誌ID: 4573118
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4573118
• Web Site: https://link.springer.com/content/pdf/10.1186/BF03352160.pdf
• Web Site: https://link.springer.com/article/10.1186/BF03352160/fulltext.html
• Web Site: http://link.springer.com/content/pdf/10.1186/BF03352160
• 本文言語コード: en
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