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Title: Early trimpi events from lightning-induced electric fields in the ionosphere: An alternative explanation. (Reannouncement with new availability information)

Technical Report ·
OSTI ID:166837

Two classes of Trimpi modulation of VLF signals in the Earth-ionosphere waveguide have been identified in the literature. The more common type occurs 1 s or more after causative lightning strokes, the second in less than 100 ms. The authors explore the possibility that these early Trimpi events result from lightning-generated, electric field impulses lowering the mirror altitudes of trapped electrons. To overcome the mirror force on energetic electrons, upward-directed electric fields with strength of a few tens of mV/m are required. This is well within the range of electric field observed on sounding rockets above thunderstorms.

Research Organization:
Phillips Lab., Hanscom AFB, MA (United States)
OSTI ID:
166837
Report Number(s):
AD-A-248611/6/XAB; PL-TR-92-2075; TRN: 53520028
Resource Relation:
Other Information: PBD: 1992
Country of Publication:
United States
Language:
English