| Title | Calculation of induced electric field during a geomagnetic storm using recursive convolution |
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| Author | Marti, L; Rezaei-Zare, A; Boteler, D |
| Source | IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers) vol. 29, issue 2, 2014 p. 802-807, https://doi.org/10.1109/TPWRD.2013.2273833 |
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| Year | 2014 |
| Alt Series | Earth Sciences Sector, Contribution Series 20140020 |
| Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| Document | serial |
| Lang. | English |
| Media | paper; digital; on-line |
| File format | pdf |
| Subjects | geophysics; Health and Safety; electrical properties; geomagnetism; magnetic storms; magnetic field; magnetic field intensity; magnetic induction; conductivity; geoelectric variations; fast Fourier
transform (FFT) |
| Illustrations | graphs; tables; equations |
| Program | Public Safety Geoscience Northern Canada Geohazards Project |
| Released | 2014 04 01 |
| Abstract | The relationship between the chnages in the earth's magnetic field and the induced geoelectric field during a geomagnetic disturbance is a frequency dependent transfer function that depends on earth
resistivity at different depths. Traditionally this function is calculated in the frequency domain expressed as an impulse function in the time domain using FFT and convolved with dB/dt in the time domain to estimate the geoelectric field E. This
paper proposes the approximation of the transfer function in the frequency domain using rational functions and to carry out the calculation of E from dB/dt using fast recursive convolution methods. |
| Summary | (Plain Language Summary, not published)
Space weather refers to the dynamic conditions on the Sun and in the space environment, in particular, in the near-Earth environment, that can affect
critical infrastructure. NRCan operates the Canadian Space Weather Forecast Centre and conducts research into space weather effects on power systems, pipelines, satellites, radio communications and GNSS positioning to help Canadian industry
understand and mitigate the effects of space weather. This paper shows how recursive convoltion can be used to calculate the geo-electric fields that can be a hazard to power systems. |
| GEOSCAN ID | 293895 |
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