Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL090700 |
Spectral Observations of Optical Emissions Associated with Terrestrial Gamma‐Ray Flashes | |
Matthias Heumesser; Olivier Chanrion; Torsten Neubert; Hugh Christian; Krystallia Dimitriadou; Francisco J. Gordillo‐; Vazquez; Alejandro Luque; Francisco Javier Pé; rez‐; Invernó; n; Richard J. Blakeslee; Nikolai Ø; stgaard; Victor Reglero; Christoph Kö; hn | |
2020-12-29 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | The Atmosphere‐Space Interactions Monitor measures Terrestrial Gamma‐Ray Flashes (TGFs) simultaneously with optical emissions from associated lightning activity. We analyzed optical measurements at 180‐230 nm, 337 nm and 777.4 nm related to 69 TGFs observed between June 2018 and October 2019. All TGFs are associated with optical emissions and 90% of them are at the onset of a large optical pulse, suggesting that they are connected with the initiation of current surges. A model of photon delay induced by cloud scattering suggests that the sources of the optical pulses are from 0.7 ms before to 4.4 ms after the TGFs, with a median of ‐10±80 µs, and 1‐5 km below the cloud top. The pulses have rise times comparable to lightning but longer durations. Pulse amplitudes at 337 nm are ∼3 times larger than at 777.4 nm. The results support the leader‐streamer mechanism for TGF generation. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/311407 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Matthias Heumesser,Olivier Chanrion,Torsten Neubert,等. Spectral Observations of Optical Emissions Associated with Terrestrial Gamma‐Ray Flashes[J]. Geophysical Research Letters,2020. |
APA | Matthias Heumesser.,Olivier Chanrion.,Torsten Neubert.,Hugh Christian.,Krystallia Dimitriadou.,...&hn.(2020).Spectral Observations of Optical Emissions Associated with Terrestrial Gamma‐Ray Flashes.Geophysical Research Letters. |
MLA | Matthias Heumesser,et al."Spectral Observations of Optical Emissions Associated with Terrestrial Gamma‐Ray Flashes".Geophysical Research Letters (2020). |
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