SciELO - Scientific Electronic Library Online

vol.117 número1-2 índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados



Links relacionados

  • En proceso de indezaciónCitado por Google
  • En proceso de indezaciónSimilares en Google


South African Journal of Science

versión On-line ISSN 1996-7489
versión impresa ISSN 0038-2353


MASHAO, Dakalo C.; KOSCH, Michael J.; BOR, Jozsef  y  NNADIH, Stanislaus. The altitude of sprites observed over South Africa. S. Afr. j. sci. [online]. 2021, vol.117, n.1-2, pp.1-8. ISSN 1996-7489.

Sprites are mesospheric optical emissions that are mostly produced by large, positive cloud-to-ground lightning discharges. Sprites appear in different morphologies such as carrot, jellyfish and column, and are typically in the altitude range of ~40-100 km above the Earth's surface. Sprites are a subset of transient luminous events and they contribute to the global electric circuit. South Africa has large convective thunderstorms, which typically occur in the summer months of every year. Peak current, time and geographical position of lightning strokes were obtained from the South African Weather Service. Sprite observations were recorded in South Africa for the first time on 11 January 2016 from Sutherland in the Northern Cape using a night-vision television camera from the South African National Space Agency's Optical Space Research laboratory. We report the first estimates of the top altitude, and the altitude of maximum brightness, of 48 sprites over South Africa. We found that the average top altitude and the altitude of maximum brightness of sprites are approximately 84.3 km and 69 km, respectively, which is consistent with estimates made elsewhere. We also found a moderately high positive and a weak positive correlation between the top altitude and the altitude of maximum brightness, respectively, of sprites and the lightning stroke charge moment change.SIGNIFICANCE: • We present the first altitude estimation of sprites observed over Africa. • The altitude of sprites observed over South Africa is in agreement with observations made elsewhere. • There is a positive correlation between the top altitude of sprites and the parent lightning charge moment change. • Sprite maximum brightness is observed near the stratopause.

Palabras clave : charge moment change; lightning; transient luminous events.

        · texto en Inglés     · Inglés ( pdf )


Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons