31 citations · 66 across the 8 of their papers we have counts for
8 papers
The radial variation of the solar wind turbulence spectra near the kinetic break scale from Parker Solar Probe measurements
S. Lotz, A. E. Nel, R. T. Wicks +7
In this study we examine the radial dependence of the inertial and dissipation range indices, as well as the spectral break separating the inertial and dissipation range in power d…
Adaptations to a geomagnetic field interpolation method in Southern Africa
M. J. Heyns, S. I. Lotz, P. J. Cilliers +1
Space weather and its impact on infrastructure presents a clear risk in the modern era, as evidenced by the adverse effects of geomagnetically induced currents (GICs) in power netw…
Probabilistic Analysis of Power Network Susceptibility to GICs
M. J. Heyns, S. I. Lotz, C. T. Gaunt
As reliance on power networks has increased over the last century, the risk of damage from geomagnetically induced currents (GICs) has become a concern to utilities. The current st…
Data Driven Transfer Functions and Transmission Network Parameters for GIC Modelling
M. J. Heyns, C. T. Gaunt, S. I. Lotz +1
Typical geomagnetically induced current (GIC) modelling assumes the induced quasi-DC current at a node in the transmission network is linearly related to the local geoelectric fiel…
Machine Learning Techniques to Detect and Characterise Whistler Radio Waves
Othniel J. E. Y. Konan, Amit Kumar Mishra, Stefan Lotz
Lightning strokes create powerful electromagnetic pulses that routinely cause very low frequency (VLF) waves to propagate across hemispheres along geomagnetic field lines. VLF ante…
dSECS: Including Variometers in Geomagnetic Field Interpolation
M. J. Heyns, S. I. Lotz, C. T. Gaunt
One of the best tools we have in geophysical modelling is the ability to interpolate the horizontal geomagnetic field at the surface of the Earth. This is especially useful in regi…
Ensemble Estimation of Network Parameters: A Tool to Improve the Real-time Estimation of GICs in the South African Power Network
M. J. Heyns, S. I. Lotz, P. J. Cilliers +1
It has long been known that large grounded conducting networks on the surface of Earth are affected by solar activity and geomagnetic storms. Power networks are such extensive grou…
The Source Regions of Whistlers
Dávid Koronczay, János Lichtenberger, Mark A. Clilverd +7
We present a new method for identifying the source regions of lightning generated whistlers observed at a fixed location. In addition to the spatial distribution of causative light…