Physics
Scientific paper
Nov 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3222807t&link_type=abstract
Geophysical Research Letters, Volume 32, Issue 22, CiteID L22807
Physics
3
Atmospheric Composition And Structure: Middle Atmosphere: Energy Deposition (3334), Electromagnetics: Wave Propagation (2487, 3285, 4275, 4455, 6934), Atmospheric Processes: Atmospheric Electricity, Atmospheric Processes: Lightning, Atmospheric Processes: Stratosphere/Troposphere Interactions
Scientific paper
During the Brazil Sprite Balloon Campaign 2002-03, the vector ELF to VLF (25 Hz-8 kHz) electric and magnetic fields driven by cloud-to-ground (CG) lightning strokes at horizontal distances of 75-600 km were measured at altitudes of 30-35 km. Electric field changes were measured for each of the 2467 CG strokes detected by the Brazilian Integrated Lightning Network. ELF pulses that occur 4-12 ms after the retarded time of the lightning sferic, which have been previously attributed to sprites, were found for 1.4% of 934 strokes examined. Thus, lightning-driven electric and magnetic field changes were common and stroke-delayed ELF pulses were rare, which disagrees with results from the Sprites99 Balloon Campaign.
Holzworth Robert H.
McCarthy Michael P.
Pinto Osmar
Thomas Jeremy N.
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