Dr Stefan Lotz

Unit: Science Research and Applications Position: Research Scientist Qualifications: PhD

Stefan hails from Bellville and completed his undergraduate studies at the University of Stellenbosch with a BSc in Physical and Mathematical Analysis - a multi-disciplinary programme focussed on dynamic systems.

He qualified with an MSc in Space Physics from Rhodes University through the National Astrophysics and Space Science Programme, with a research project on the prediction of geomagnetically induced currents. In 2012 Stefan graduated with a PhD from Rhodes University where his research thesis focussed on modelling Pc3 pulsation intensity with artificial neural networks using solar wind parameters as input.

His current research focus is on geomagnetically induced currents, and ultra-low frequency (ULF) and very low frequency (VLF) waves in the magnetosphere and ionosphere. NN


Research Interests

  • Modelling and prediction of geomagnetically induced currents
  • Space weather modelling
  • Pc3 pulsations

Publications

Title DOI Number Link
Regression-based forecast model of induced geo-electric field Lotz, S. I. and Heyns, M. J. and Cilliers, P. J. 10.1002/2016SW001518
Analysis of Geomagnetic Hourly Ranges D.W. Danskin, S.I. Lotz 10.1002/2015SW001184
A solar-wind-driven empirical model of Pc3 wave activity at a mid-latitude location S.I. Lotz, B. Heilig, P.R. Sutcliffe 10.5194/angeo-33-225-2015
A solar wind-based model of geomagnetic field fluctuations at a mid-latitude station S.I. Lotz, P.J. Cilliers 10.1016/j.asr.2014.09.014
Spectral Structure of Pc3-4 Pulsations: Possible Signatures of Cavity Modes P.R. Sutcliffe, B. Heilig, and S. Lotz 10.5194/angeo-31-725-2013
Empirically modelled Pc3 activity based on solar wind parameters B. Heilig, S. Lotz , J. Verö, P. Sutcliffe, J. Reda, K. Pajunpäa, and T. Raita 10.5194/angeo-28-1703-2010
Present day challenges in understanding the geomagnetic hazard to national power grids A.W.P. Thomson, C.T. Gaunt, P. Cilliers, J.A. Wild, B. Opperman, L.-A. McKinnell, P. Kotze, C.M. Ngwira, and S.I. Lotz 10.1016/j.asr.2009.11.023