Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/8086
Authors: | Tozzi, R.* Dominici, G.* De Michelis, P.* Meloni, A.* |
Title: | Influence of solar activity on magnetic network measurements | Journal: | Annals of Geophysics | Series/Report no.: | 6/55 (2012 | Issue Date: | 2012 | DOI: | 10.4401/ag-5458 | Keywords: | magnetic repeat stations solar activity |
Subject Classification: | 04. Solid Earth::04.05. Geomagnetism::04.05.08. Instruments and techniques | Abstract: | The influence of solar activity on magnetic measurements taken during the Italian repeat station surveys performed in 1999/2000 and 2009/2010 has been investigated. A method to estimate the difference between the 2000.0 and 2010.0 surveys in terms of the “residual” (i.e. not completely reduced) external contribution is proposed. This method is also based on the removal of the contribution due to the magnetic field of internal origin by means of CHAOS3 model from magnetic repeat station measurements. The origin of the observed differences is interpreted in terms of the very different level of solar activity between 2000.0 and 2010.0. Indeed, results seem to suggest that differences could be attributed to the enhanced ring current intensity during a phase of solar maximum. The investigation of the spatial patterns of these differences suggests that they could be reduced by introducing a larger number of variometer stations, especially during surveys undertaken under conditions of high solar activity. |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Annals of Geophysics_2012.pdf | 976.52 kB | Adobe PDF | View/Open |
Page view(s) 10
444
checked on Apr 17, 2024
Download(s) 50
202
checked on Apr 17, 2024