Modeling Geomagnetically Induced Currents Using Geomagnetic Indices and Data

Trichtchenko, Larisa; Boteler, D. H.

doi:10.1109/tps.2004.830993

Cited by 56 publications

(56 citation statements)

References 5 publications

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“…As the induced P/S voltage depends not only on the magnitude of the electric field but also on its direction with respect to the pipeline, we computed a direction which gives the highest correlation with the P/S voltage (Trichtchenko et al, 2004). To be more concrete: P/S voltage was correlated with E α =E x cos α+E y sin α, for all α from 0 • to 360 • (step 5 • ), and the angle α which gave the highest correlation coefficient was denoted at a best-fit direction.…”

Section: Analysis Of the Pipe-to-soil Voltagementioning

confidence: 99%

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

Hejda¹,

Bochníček²

2005

Ann. Geophys.

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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.

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Section: Analysis Of the Pipe-to-soil Voltagementioning

confidence: 99%

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

Hejda¹,

Bochníček²

2005

Ann. Geophys.

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“…Elsewhere in the world, the largest interest in GIC has been in North America as demonstrated, for example, by Albertson & Thorson (1974), Lanzerotti (1979), Bolduc (2002), Trichtchenko & Boteler (2004), Kappenman (2005) and Pulkkinen et al (2010). In 2000s, and especially motivated by the October 2003 event, GIC has reached attention also at lower geomagnetic latitudes: see Bernhardi et al (2008) (South Africa), Trivedi et al (2007) (Brazil), Liu et al (2009) (China), Watari et al (2009) (Japan) and Marshall et al (2011) (Australia).…”

Section: Introductionmentioning

confidence: 99%

Continental scale modelling of geomagnetically induced currents

Viljanen

Pirjola

Wik³

et al. 2012

J. Space Weather Space Clim.

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The EURISGIC project (European Risk from Geomagnetically Induced Currents) aims at deriving statistics of geomagnetically induced currents (GIC) in the European high-voltage power grids. Such a continent-wide system of more than 1500 substations and transmission lines requires updates of the previous modelling, which has dealt with national grids in fairly small geographic areas. We present here how GIC modelling can be conveniently performed on a spherical surface with minor changes in the previous technique. We derive the exact formulation to calculate geovoltages on the surface of a sphere and show its practical approximation in a fast vectorised form. Using the model of the old Finnish power grid and a much larger prototype model of European high-voltage power grids, we validate the new technique by comparing it to the old one. We also compare model results to measured data in the following cases: geoelectric field at the Nagycenk observatory, Hungary; GIC at a Russian transformer; GIC along the Finnish natural gas pipeline. In all cases, the new method works reasonably well.

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“…Similar studies have also been conducted in the Tierra del Fuego region of South America [Osella et al, 1998;Osella and Favetto, 2000]. Large GICs have been correlated with the largest rate of change of the geomagnetic field [Viljanen, 1997;Viljanen et al, 1999;Trichtchenko and Boteler, 2004] and simulations of PSPs on Canadian and Scandinavian pipelines have also been conducted [Boteler and Seager, 1998;Pulkkinen et al, 2001b;Trichtchenko and Boteler, 2002;Fernberg et al, 2007]. GIC signals observed on low-latitude pipelines [Martin, 1993;Waters et al, 2006] are likely to have different ionospheric source fields to those observed on high-latitude pipelines and provide additional spectral information for comparison with model predictions.…”

Section: Introductionmentioning

confidence: 83%

“…[23] Typically, GIC studies employ dB/dt data as an indicator of space weather conditions and its impact on pipelines and power networks [Viljanen, 1997;Viljanen et al, 1999;Kappenman, 2001;Trichtchenko and Boteler, 2004]. This study shows that a GIC index could be used to provide a better indicator of GIC-related space weather conditions compared with A index, K index or dB/dt data.…”

Section: Discussion and Modelingmentioning

confidence: 99%

“…The applicability of dB/dt over A and K indices as an indicator of GIC activity is discussed by Trichtchenko and Boteler [2004]. Further, the GIC index defined in this paper can be derived entirely from geomagnetic field data and does not require knowledge of the Earth's conductivity, ionospheric current geometry and the relevant infrastructure details required for the more accurate simulations of PSPs [Boteler and Seager, 1998;Osella et al, 1998;Favetto and Osella, 1999;Pulkkinen et al, 2001b;Trichtchenko and Boteler, 2002;Fernberg et al, 2007].…”

Section: Discussion and Modelingmentioning

confidence: 99%

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2010

Space Weather Quarterly

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Modeling Geomagnetically Induced Currents Using Geomagnetic Indices and Data

Cited by 56 publications

References 5 publications

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

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

Continental scale modelling of geomagnetically induced currents

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