Publications [#283205] of Steven A. Cummer

Papers Published

1. Stanley, M; Brook, M; Krehbiel, P; Cummer, SA, Detection of daytime sprites via a unique sprite ELF signature, Geophysical Research Letters, vol. 27 no. 6 (March, 2000), pp. 871-874, American Geophysical Union (AGU), ISSN 0094-8276 [1999GL010769], [doi]
   (last updated on 2023/06/01)

   Abstract:
   On August 14, 1998, 3 separate daytime sprite events were detected via a unique extremely low frequency (ELF) sprite signature. The onset of the sprite ELF signatures was delayed by 11.0-13.2 ms from positive cloud-to-ground strokes which had attained exceptionally large charge moment (charge times height) changes of 3900-6100 C·km. It is shown that a charge moment change of 6100 C·km may have been sufficient for conventional breakdown at κ 54 km altitude, assuming an experimentally measured ion conductivity profile of Holzworth et al., [1985]. The daytime sprites themselves contained unusually large charge moment changes of κ 2800 C·km, κ 1200 C·km, and κ 910 C·km.

   Keywords:
   Daylighting;Ionospheric measurement;Clouds;Global positioning system;