2-D Finite Difference Analyses of Schumann Resonance and Identification of Lightning Distribution

• Ando Yoshiaki

  The University of Electro-Communications

• Hayakawa Masashi

  The University of Electro-Communications

抄録

The extremely low frequency propagation associated with Schumann resonance phenomena are calculated numerically by the frequency-domain finite difference method, and distribution of source lightnings is identified by solving an inverse problem using the computed spectra as a set of basis functions. The finite difference equations are formulated in terms of discretized magnetic fields in the Cartesian coordinates adopting a cylindrical shell cavity for simplicity. The most reliable electron and neutral density models in the atmosphere and the ionosphere can be used to take into consideration propagation losses. The inverse problem already developed is applied to the measured data to reconstruct lightning activity distribution as a function of distance from the observation point. The reconstructed data successfully show the lightning active season, time, and distance, which are reasonable in comparison with the earlier reports.

収録刊行物

• 電気学会論文誌．　Ａ

  電気学会論文誌．　Ａ 124 (12), 1225-1231, 2004

  一般社団法人 電気学会

キーワード

• Schumann resonance
• finite difference method
• inverse problem

詳細情報

• CRID: 1390282679569784064
• NII論文ID: 10014125738
• NII書誌ID: AN10136312
• DOI: 10.1541/ieejfms.124.1225
• ISSN: 13475533
• ISSN: 03854205
• NDL書誌ID: 7169357
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7169357
• Web Site: http://www.jstage.jst.go.jp/article/ieejfms/124/12/124_12_1225/_pdf
• 本文言語コード: en
• データソース種別:
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  • NDL
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• 抄録ライセンスフラグ: 使用不可