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| Titel |
Spatial distribution of the mantle conductivity as seen from the 3-D inversion of ground-based C-responses |
| VerfasserIn |
Alexey Semenov, Alexey Kuvshinov |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250042767
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| Zusammenfassung |
| We present the results of three-dimensional (3-D) inversion of global ground-based electromagnetic (EM) data. The data consists of C-responses estimated at 133 mid-latitude observatories in the period range between 4 and 100 days. The responses are calculated using fifty years (1957-2007) of hourly mean values of the magnetic field. Special attention is paid to reduce the effects of the auroral source on the calculated C-responses. We invert the responses to construct global 3-D model of electrical conductivity at depths between 410 and 1500 km. The robustness of the 3-D conductivity model with respect to different inverse solver settings (model discretization, starting model, regularization, ocean effect correction, etc.) is discussed. |
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