Articles | Volume 23, issue 9
Ann. Geophys., 23, 3089–3093, 2005
https://doi.org/10.5194/angeo-23-3089-2005

Special issue: 1st European Space Weather Week (ESWW)

Ann. Geophys., 23, 3089–3093, 2005
https://doi.org/10.5194/angeo-23-3089-2005

  22 Nov 2005

22 Nov 2005

Geomagnetically induced pipe-to-soil voltages in the Czech oil pipelines during October-November 2003

P. Hejda and J. Bochníček P. Hejda and J. Bochníček
  • Geophysical Institute, Academy of Sciences, Bocni II, 14 131, Prague, Czech Republic

Abstract. Whereas geomagnetically induced currents are a source of problems for technological systems mainly at high geomagnetic latitudes, strong geomagnetic disturbances can have quite strong effects even at mid-latitudes. This paper deals with the analysis of the pipe-to-soil (P/S) voltage measured in oil pipelines in the Czech Republic during the Halloween magnetic storms in 2003. It is shown that the simplest - plane wave and uniform Earth-model of the electric field corresponds well to the measured P/S voltage. Although the largest amplitudes of the geomagnetic field were reached on the onset of the geomagnetic storm, large voltages were also induced in the main and recovery phases due to Pc5 oscillations.