Zobrazeno 1 - 10
of 142
pro vyhledávání: '"Pirjola Risto"'
Autor:
Viljanen Ari, Pirjola Risto
Publikováno v:
Journal of Space Weather and Space Climate, Vol 7, p A22 (2017)
The geoelectric field driving geomagnetically induced currents (GIC) has complex spatial variations. It follows that different patterns of the field vectors in a given area having the same regional mean can produce very different GIC. In this study,
Externí odkaz:
https://doaj.org/article/0f8a492b4f74431d9b62e3e5caec4df1
Autor:
Barbosa Cleiton, Alves Livia, Caraballo Ramon, Hartmann Gelvam A., Papa Andres R.R., Pirjola Risto J.
Publikováno v:
Journal of Space Weather and Space Climate, Vol 5, p A35 (2015)
Geomagnetically Induced Currents (GIC) are a space weather effect, which affects ground-based technological structures at all latitudes on the Earth’s surface. GIC occurrence and amplitudes have been monitored in power grids located at high and mid
Externí odkaz:
https://doaj.org/article/88ac00fb2fb8485d852aa2a41c8f9b65
Publikováno v:
Journal of Space Weather and Space Climate, Vol 4, p A09 (2014)
Statistics of geomagnetically induced currents (GIC) in the European high-voltage power grids based on 1-min geomagnetic recordings in 1996–2008 and on 1-D models of the ground conductivity have been derived in the EURISGIC project (European Risk f
Externí odkaz:
https://doaj.org/article/3c461853204f4addb5725274ebe8c12b
Publikováno v:
Journal of Space Weather and Space Climate, Vol 4, p A03 (2014)
During geomagnetic storms, the geomagnetically induced currents (GIC) cause bias fluxes in transformers, resulting in half-cycle saturation. Severely distorted exciting currents, which contain significant amounts of harmonics, threaten the safe opera
Externí odkaz:
https://doaj.org/article/e2b09969bd3e4b668f9532e0f9359678
Autor:
Sakharov Yaroslav, Prácser Ernö, Ádám Antal, Wik Magnus, Pirjola Risto, Viljanen Ari, Katkalov Juri
Publikováno v:
Journal of Space Weather and Space Climate, Vol 2, p A17 (2012)
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
Externí odkaz:
https://doaj.org/article/2fe621e1e10c4c3aaa888b7833339f44
Publikováno v:
In International Journal of Electrical Power and Energy Systems May 2020 117
Akademický článek
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Autor:
Pirjola, Risto J.1 (AUTHOR) risto.pirjola@hotmail.com, Boteler, David H.1 (AUTHOR) david.boteler@canada.ca, Tuck, Loughlin1,2 (AUTHOR), Marsal, Santiago3 (AUTHOR)
Publikováno v:
Annales Geophysicae (ANGEO) (09927689). 2022, Vol. 40 Issue 2, p205-215. 11p.
Autor:
Pirjola, Risto
Publikováno v:
In Journal of Atmospheric and Solar-Terrestrial Physics 2007 69(12):1305-1311
Autor:
Pirjola, Risto
Publikováno v:
In Journal of Atmospheric and Solar-Terrestrial Physics 2005 67(7):701-708