1-dimensional upward continuation of the ground magnetic field disturbance using spherical elementary current systems

DOI PDF Web Site Web Site Web Site 被引用文献4件 参考文献18件
  • Vanhamäki Heikki
    Finnish Meteorological Institute, Geophysical Research Division
  • Amm Olaf
    Finnish Meteorological Institute, Geophysical Research Division
  • Viljanen Ari
    Finnish Meteorological Institute, Geophysical Research Division

書誌事項

タイトル別名
  • One-dimensional upward continuation of the ground magnetic field disturbance using spherical elementary current systems

この論文をさがす

抄録

Ionospheric equivalent currents are defined as spherical sheet currents, which reproduce the observed magnetic disturbances below the ionosphere. One way of determining these currents is to place several so called spherical elementary current systems (SECS) in the ionospheric height and to solve an inversion problem for the amplitudes of these systems. In previous studies this method has been applied to two-dimensional data sets, having both latitudinal and longitudinal spatial coverage (2D SECS method). In this paper a one-dimensional variant of this method (1D SECS) is developed. The 1D SECS method can be used even in those situations where the data set is one dimensional, e.g. with one meridionally aligned magnetometer chain. The applicability of the 1D SECS method is tested using both synthetic and real data. It is found that in real situations the errors in the 1D SECS results are 5-10% in current density profiles and -5% in integrated currents, when compared to the results of the more accurate 2D SECS method.

収録刊行物

被引用文献 (4)*注記

もっと見る

参考文献 (18)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ