Comparison of time delays of sprites induced by winter lightning flashes in the Japan Sea with those in the Pacific Ocean

Matsudo, Y.; Suzuki, Tomoyuki; Michimoto, Koichiro; Myokei, K.; Hayakawa, Masashi

doi:10.1016/j.jastp.2008.09.040

Cited by 17 publications

(20 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first peak corresponds to the causative lightning, whereas the second peak was found to be simultaneous in time with sprite luminosity and it appears to be proportional in amplitude to the brightness of the sprite. Based on the ELF field measurements, the charge moment change of the sprite can be extracted (Boccippio et al, 1995;Hobara et al, 2001Hobara et al, , 2006Hayakawa et al, 2004;Matsudo et al, 2009). In several cases the sprite current moments responsible for the ELF pulse were estimated to be of several hundred kA km (Cummer et al, 1998(Cummer et al, , 2006a.…”

Section: Vlf and Elf Phenomena Associated With Spritesmentioning

confidence: 99%

Underlying mechanisms of transient luminous events: a review

Сурков

Hayakawa

2012

Ann. Geophys.

Self Cite

View full text Add to dashboard Cite

Abstract. Transient luminous events (TLEs) occasionally observed above a strong thunderstorm system have been the subject of a great deal of research during recent years. The main goal of this review is to introduce readers to recent theories of electrodynamics processes associated with TLEs. We examine the simplest versions of these theories in order to make their physics as transparent as possible. The study is begun with the conventional mechanism for air breakdown at stratospheric and mesospheric altitudes. An electron impact ionization and dissociative attachment to neutrals are discussed. A streamer size and mobility of electrons as a function of altitude in the atmosphere are estimated on the basis of similarity law. An alternative mechanism of air breakdown, runaway electron mechanism, is discussed. In this section we focus on a runaway breakdown field, characteristic length to increase avalanche of runaway electrons and on the role played by fast seed electrons in generation of the runaway breakdown. An effect of thunderclouds charge distribution on initiation of blue jets and gigantic jets is examined. A model in which the blue jet is treated as upward-propagating positive leader with a streamer zone/corona on the top is discussed. Sprite models based on streamer-like mechanism of air breakdown in the presence of atmospheric conductivity are reviewed. To analyze conditions for sprite generation, thunderstorm electric field arising just after positive cloudto-ground stroke is compared with the thresholds for propagation of positively/negatively charged streamers and with runway breakdown. Our own estimate of tendril's length at the bottom of sprite is obtained to demonstrate that the runaway breakdown can trigger the streamer formation. In conclusion we discuss physical mechanisms of VLF (very low frequency) and ELF (extremely low frequency) phenomena associated with sprites.

show abstract

Section: Vlf and Elf Phenomena Associated With Spritesmentioning

confidence: 99%

Underlying mechanisms of transient luminous events: a review

Сурков

Hayakawa

2012

Ann. Geophys.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The SAFIR system is able to detect a flash 200 km away from each SAFIR station with an accuracy of a few km. The reader is referred to the papers by Hobara et al (2000), Matsudo et al (2004Matsudo et al ( , 2007Matsudo et al ( , 2009, and Ando et al (2005) for the details on the measuring system.…”

Section: Observationsmentioning

confidence: 99%

“…The parameters of this event have been described in the paper by Matsudo et al (2009) Table 1). The transient magnetic and electric fields of the flash, occurred at 12:09:49.54375 UTC, are shown in Fig.…”

Section: Observationsmentioning

confidence: 99%

“…Fig. 4 shows one more example of the dynamic spectrogram and power spectrum density resulted from the sprite-producing lightning occurred over Pacific Ocean area on February 10, 2007 (event # 121, which can be found in the paper by Matsudo et al (2009)). The first and third panel exhibits the spectrograms of the northÀ south and eastÀ west component of magnetic variations.…”

Section: Observationsmentioning

confidence: 99%

“…Since their discovery (Franz et al, 1990) the sprites were well documented in the ground-based observations over land and ocean in any season (Lyons, 1994;Boccippio et al, 1995;Hardman et al, 2000;Neubert et al, 2001;Hobara et al, 2001;Füllekrug et al, 2002;Hayakawa et al, 2004Hayakawa et al, , 2005Pinto et al, 2004;Cummer et al, 2006a;Matsudo et al, 2007Matsudo et al, , 2009). The analysis of aircraft , satellite (Cummer et al, 2006b), and space shuttle (Yair et al, 2004) data also confirms the existence of the mesospheric TLEs.…”

Section: Introductionmentioning

confidence: 98%

See 2 more Smart Citations