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Geomagnetic field variations are measured continuously at the magnetic observatory of the University Coimbra since 1866. This project addresses one important application of geomagnetic field time series, the assessment of hazard associated with geomagnetically induced currents in high-voltage power lines. To this end, we gather the expertise of different fields of geophysics, engineering and mathematics in order to carry out all the required tasks: identification of different driving sources, calculation of a conductivity model for the Portuguese territory, definition of the electrical and geometrical characteristics of the power grid. In parallel, all field studies and instruments comparaisons will take place in order to accomplish the transfer of the COI station to a new site free of urban electromagnetic noise. 

This study is funded by national funds through FCT (Foundation for Science and Technology, I.P.), under the project MAG-GIC: PTDC/CTA - GEO/31744/2017.


Presentations (scheduled):

  • "The impact of the Earth subsurface on GICs estimation", Joana Alves Ribeiro, Fernando J. G. Pinheiro, Pedro Baltazar Soares, Fernando A. Monteiro Santos, Maria Alexandra Pais. Dia da Investigação do Departamento de Física, University of Coimbra, 26 may 2021 (pdf)
  • "Geomagnetically indiced curremts in power systems", Rute Rodrigues Santos, M. Alexandra Pais, João Cardoso, Miguel Silva, Joana Alves Ribeiro, Fernando Pinheiro. "Dia da Investigação do Departamento de Física", University of Coimbra, 26 may 2021 (pdf)