globalchange  > 气候减缓与适应
DOI: 10.1029/2017JA024837
Scopus记录号: 2-s2.0-85047658944
论文题名:
The First Fermi-GBM Terrestrial Gamma Ray Flash Catalog
作者: Roberts O.J.; Fitzpatrick G.; Stanbro M.; McBreen S.; Briggs M.S.; Holzworth R.H.; Grove J.E.; Chekhtman A.; Cramer E.S.; Mailyan B.G.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期:5
起始页码: 4381
结束页码: 4401
语种: 英语
英文关键词: Fermi ; GBM ; TGF ; WWLLN
英文摘要: We present the first Fermi Space Telescope Gamma Ray Burst Monitor (GBM) catalog of 4,144 terrestrial gamma ray flashes (TGFs), detected since launch in 11 July 2008 through 31 July 2016. We discuss the updates and improvements to the triggered data and off-line search algorithms, comparing this improved detection rate of ∼800 TGFs per year with event rates from previously published TGF catalogs from other missions. A Bayesian block algorithm calculated the temporal and spectral properties of the TGFs, revealing a delay between the hard (>300 keV) and soft (≤300 keV) photons of around 27 μs. Detector count rates of “low-fluence” events were found to have average rates exceeding 150 kHz. Searching the World-Wide Lightning Location Network data for radio sferics within ±5 min of each TGF revealed a clean sample of 1,314 World-Wide Lightning Location Network locations, which were used to to accurately locate TGF-producing storms. It also revealed lightning and storm activity for specific regions, as well as seasonal and daily variations of global lightning patterns. Correcting for the orbit of Fermi, we quantitatively find a marginal excess of TGFs being produced from storms over land near oceans (i.e., narrow isthmuses and small islands). No difference was observed between the duration of TGFs over the ocean and land. The distribution of TGFs at a given local solar time for predefined American, Asian, and African regions were confirmed to correlate well with known regional lightning rates. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113984
Appears in Collections:气候减缓与适应

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作者单位: School of Physics, University College Dublin, Dublin 4, Ireland; Marshall Space Flight Center, National Space Science and Technology Center, Universities Space Research Association, Huntsville, AL, United States; Center for Space Plasma and Aeronomic Research, University of Alabama in HuntsvilleAL, United States; Department of Space Science, University of Alabama in Huntsville, Huntsville, United States; Earth and Space Sciences, University of Washington, Seattle, WA, United States; Space Science Division, Naval Research Laboratory, Washington, DC, United States; College of Science, George Mason University, Fairfax, VA, United States; Department of Physics and Space Sciences, Florida Institute of Technology, Melbourne, FL, United States

Recommended Citation:
Roberts O.J.,Fitzpatrick G.,Stanbro M.,et al. The First Fermi-GBM Terrestrial Gamma Ray Flash Catalog[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(5)
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