Accession Number : ADP002204

Title :   Airborne and Ground-Based Lightning Electric and Magnetic Fields and VHF Source Locations for a Two-Stroke Ground Flash,

Corporate Author : LIGHTNING TECHNOLOGIES INC PITTSFIELD MA

Personal Author(s) : Uman,M. A. ; Krider,E. P. ; Rustan,P. L. , Jr. ; Kuhlman,B. P. ; Moreau,J. P.

Report Date : 1983

Pagination or Media Count : 8

Abstract : We have reduced and analyzed the data from a two-stroke lightning flash to ground which occurred in South Florida on July 16, 1981, within a network of four ground stations instrumented for VHF measurements, about 15 km from a ground station instrumented for wide-band electric field measurements, and within 10 km of a WC-130 aircraft operating at 5.2 km and instrumented for wide-band electric and magnetic field measurements. The four-station ground-based VHF measurements allow a reconstruction of the geometry of the flash, which was composed of two separate channels to ground. Electric field system bandwidth for the ground measurement was from 0.02 Hz to about 2 MHz; electric and magnetic field system bandwidths on the aircraft extended to 20 MHz. Ground-based and airborne measurements of fields are presented and shown to be consistent with one another. (Author)

Descriptors :   *Lightning, Direction finding, Position(Location), Magnetic fields, Electric fields, Radio waves, Very high frequency, Measurement, Airborne, Ground level, Florida, Symposia

Distribution Statement : APPROVED FOR PUBLIC RELEASE