Effects of a lightning discharge detected by the DE 2 satellite over Hurricane Debbie

Details Effects of a lightning discharge detected by the DE 2 satellite over Hurricane Debbie Effects of a lightning discharge detected by the DE 2 satellite over Hurricane Debbie

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....97.6359b&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. A5, May 1, 1992, p. 6359-6367.

Physics

25

Atmospheric Electricity, Earth Ionosphere, Electric Discharges, Hurricanes, Lightning, Satellite Observation, Electric Fields, Electron Acceleration, Electron Precipitation

Scientific paper

The satellite observation of a large, about 40-mV/m, transient electric field disturbance over Hurricane Debbie in September 1982 is reported. The electric field event is viewed as a spheric disturbance from a lightning discharge in the active weather system located beneath the satellite. To elucidate this observation of upward moving electrons in the ionosphere associated with a lightning event, several mechanisms for electron acceleration by electric field with components, E(parallel), along the magnetic field are compared. 'Runaway' electrons were accelerated in about 1 ms by a downward directed E(parallel) pulse of about 1 V/m magnitude. Such fields can result from rapidly exposed, negative space charges near the tops of clouds during positive cloud-to-ground discharges. HF frequency Fourier components of the E(parallel) pulse must propagate through the low-conducting nighttime atmosphere to the ionosphere with little dissipation.

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