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Titolo:
New evidence for the brightness and ionization of blue starters and blue jets
Autore:
Wescott, EM; Sentman, DD; Stenbaek-Nielsen, HC; Huet, P; Heavner, MJ; Moudry, DR;
Indirizzi:
Univ Alaska, Inst Geophys, Fairbanks, AK 99775 USA Univ Alaska Fairbanks AK USA 99775 Inst Geophys, Fairbanks, AK 99775 USA Los Alamos Natl Lab, Los Alamos, NM 87545 USA Los Alamos Natl Lab Los Alamos NM USA 87545 Lab, Los Alamos, NM 87545 USA
Titolo Testata:
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
fascicolo: A10, volume: 106, anno: 2001,
pagine: 21549 - 21554
SICI:
0148-0227(20011001)106:A10<21549:NEFTBA>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
SIMULATIONS; DISCHARGES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Wescott, EM Univ Alaska, Inst Geophys, 903 Koyukuk Dr, Fairbanks, AK 99775USA Univ Alaska 903 Koyukuk Dr Fairbanks AK USA 99775 AK 99775 USA
Citazione:
E.M. Wescott et al., "New evidence for the brightness and ionization of blue starters and blue jets", J GEO R-S P, 106(A10), 2001, pp. 21549-21554

Abstract

Blue jets and blue starters are partially ionized luminous cones of primarily blue light that propagate upward out of the top of thunderstorms at speeds of order 100 km s(-1). Blue jets propagate up similar to 40 km, but blue starters, which resemble blue jets, terminate abruptly after only a few kilometers of upward travel. Theories on the origin of blue jets have proposed that they are due to either positive or negative streamers or runaway electrons. Quantitative analysis of new multi-instrument observations of a blue starter from an aircraft during the Energetics of Upper Atmospheric Excitation by Lightning, 1998 (EXL98) campaign of July 1998, shows that the ionization accounts for similar to3 % of the observed intensity. Quantitative analysis of a remarkable color photograph of a blue jet taken from Reunion Island in the Indian Ocean shows that the minimum optical energy depositionwas similar to0.5 MJ. The same photograph shows details of streamers neverbefore seen.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 16:29:49