Triangulation and Coupling of Gigantic Jets Near the Lower Ionosphere Altitudes

Kang Ming Peng, Rue Ron Hsu, Wei Yu Chang, Han Tzong Su, Alfred Bing Chih Chen, Jung Kuang Chou, Yen Jung Wu, Shu Chun Chang, Chien Lun Hung, I. Ching Yang, Sung Hui Tsai

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2 Citations (Scopus)

Abstract

Coordinated TLE (transient luminous event) optical observations in Taiwan have been held since 2011, with an aim to achieve triangulation. Currently, there are four observation stations with baselines varying from 100 to 400 km between them. The system recorded eight gigantic jets (GJs) that were recorded by at least two stations on the night of 20 August 2014. The weather radar data indicate that these GJs occurred around the troposphere overshooting tops of a vigorous cumulonimbus cloud. A leader-to-streamer transition was discerned as the appearance of these GJs changed from jet-like (leader) to fan-like (streamer) at ~40 km altitude. Most of these GJs terminated at the lower ionosphere boundary (80–90 km), but one GJ topped with a 10 km thick diffuse region extended higher than 100 km. Moreover, three sets of the GJs occurred within 0.5–100 s in the same general region. The residual plasma patches from the preceding GJs appear to cause the subsequent GJs to contain more bead structures and to be brighter. Also, three streamer columns of a subsequent GJ that occurred more than 100 s after the preceding GJ were identified to have rebrightened at 55 to 70 km altitudes. The rebrightened streamers and the bead structure increments in the subsequent GJs suggest that there were GJ-produced long-lasting plasma patches in the mesosphere.

Original languageEnglish
Pages (from-to)6904-6916
Number of pages13
JournalJournal of Geophysical Research: Space Physics
Volume123
Issue number8
DOIs
Publication statusPublished - 2018 Aug

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

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