首页|Terrestrial Gamma-Ray Flashes With Accompanying Elves Detected by ASIM

Terrestrial Gamma-Ray Flashes With Accompanying Elves Detected by ASIM

扫码查看
原文链接
  • NSTL
  • Amer Geophysical Union
The Atmosphere-Space Interactions Monitor was designed to monitor Terrestrial Gammaray Flashes (TGFs) and Transient Luminous Events (TLEs) from space, enabling the study of how these phenomena are related. In this paper, we present observations of 17 TGFs with accompanying Elves. TGFs are short and highly energetic bursts of gamma photons associated with lightning discharges, whereas Elves are TLEs that are observed as concentric rings of ultraviolet (UV) and visible light at ionospheric altitudes, produced by the excitation of N_2 molecules when an electromagnetic pulse hits the base of the ionosphere. Elves were identified when optical detections in the UV band could be clearly distinguished from other optical signals from lightning strokes. The TGFs they accompanied had short durations and were associated with particularly high peak current lightning. Lightning sferics associated with these events were detected by the global lightning network GLD360 and the World Wide Lightning Location Network, and they were, with the exception of one event, observed over ocean or coastal regions. It is likely that these events were associated with Energetic In-cloud Pulses. We show that short duration TGFs tend to be associated with higher peak currents than long duration TGFs.

Terrestrial Gamma-RayFlashes With AccompanyingElves Detected by ASIM

Ingrid Bj?rge-Engeland、Nikolai ?stgaard、Andrey Mezentsev、Chris Alexander Skeie、David Sarria、Jeff Lapierre、Anders Lindanger、Torsten Neubert、Martino Marisaldi、Nikolai Lehtinen、Olivier Chanrion、Kjetil Ullaland、Shiming Yang、Georgi Genov、Freddy Christiansen、Victor Reglero

展开 >

Department of Physics and Technology, Birkeland Centre for Space Science, University of Bergen, Bergen, Norway

Earth Networks, Germantown, MD, USA

National Space Institute, Technical University of Denmark (DTU Space), Kongens Lyngby, Denmark

Image Processing Laboratory, University of Valencia, Valencia, Spain

展开 >

2022

10.1029/2021JD036368

Journal of Geophysical Research

Journal of Geophysical Research

ISSN：2169-897X
年,卷(期)：2022.127(11)
  • 9
  • 56