S
Stefan Lotz
Researcher at South African National Space Agency
Publications - 31
Citations - 286
Stefan Lotz is an academic researcher from South African National Space Agency. The author has contributed to research in topics: Earth's magnetic field & Geomagnetically induced current. The author has an hindex of 7, co-authored 26 publications receiving 185 citations. Previous affiliations of Stefan Lotz include Lancaster University & Rhodes University.
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Present day challenges in understanding the geomagnetic hazard to national power grids
Alan Thomson,Charles Trevor Gaunt,Pierre Cilliers,Jim Wild,Ben D.L. Opperman,Lee-Anne McKinnell,P. B. Kotzé,Chigomezyo M. Ngwira,Stefan Lotz +8 more
TL;DR: In a recent workshop in South Africa, UK and South African scientists and engineers discussed the current understanding of this hazard, as it affects major power systems in Europe and Africa as mentioned in this paper.
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Empirically modelled Pc3 activity based on solar wind parameters
TL;DR: In this article, the authors investigated the influence of solar wind particle density on Pc3 activity and showed that in the event of anomalously low SW particle density, Pc 3 activity is extremely low regardless of otherwise favorable SW speed and cone angle.
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Geomagnetic Pulsations Driving Geomagnetically Induced Currents
TL;DR: Geomagnetically induced currents (GICs) are driven by the geoelectric field induced by fluctuations of Earth's magnetic field as mentioned in this paper, and are often associated with large impulsive even currents.
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Spectral structure of Pc3–4 pulsations: possible signatures of cavity modes
TL;DR: In this paper, the authors investigated the spectral structure of Pc3-4 pulsations observed at low and midlatitudes and found that at least three mechanisms contribute to the spectral content of pulsations typically observed at these latitudes.
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Ionospheric Response at Conjugate Locations During the 7–8 September 2017 Geomagnetic Storm Over the Europe-African Longitude Sector
John Bosco Habarulema,John Bosco Habarulema,Zama T. Katamzi-Joseph,Zama T. Katamzi-Joseph,Dalia Buresova,Rendani Rejoyce Nndanganeni,Tshimangadzo Merline Matamba,Mpho Tshisaphungo,Stephan Buchert,Michael Kosch,Michael Kosch,Stefan Lotz,Pierre J. Cilliers,Pierre J. Cilliers,Ayman Mahrous +14 more
TL;DR: In this article, the role of the bottomside and topside ionosphere and plasmasphere in influencing electron density changes during the 7-8 September 2017 geomagnetic storm was investigated.