Results 31 to 40 of about 3,924 (237)

Understanding the properties, wave drivers, and impacts of electron microburst precipitation: Current understanding and critical knowledge gaps

Frontiers in Astronomy and Space Sciences, 2022
Microbursts are impulsive (<1s) injections of very energetic to relativistic electrons (energies from a few keV to MeV) into Earth’s atmosphere. They are important because they may represent a major loss process for the outer radiation belt (Ripoll ...
Sadie S. Elliott, Aaron Breneman, Christopher Colpitts, Jacob Bortnik, Allison Jaynes, Alexa Halford, Mykhaylo Shumko, Mykhaylo Shumko, Lauren Blum, Lunjin Chen, Ashley Greeley, Drew Turner   +11 more
doaj   +1 more source

Short-duration Electron Precipitation Studied by Test Particle Simulation [PDF]

Journal of Astronomy and Space Sciences, 2015
Energy spectra of electron microbursts from 170 keV to 340 keV have been measured by the solid-state detectors aboard the low-altitude (680 km) polar-orbiting Korean STSAT-1 (Science and Technology SATellite).
Jaejin Lee, Kyung-Chan Kim, Jong-Gil Lee
doaj   +1 more source

Large-Eddy Simulation of a microburst [PDF]

Atmospheric Chemistry and Physics, 2011
The three-dimensional structure and evolution of an isolated and stationary microburst are simulated using a time-dependent, high resolution Large-Eddy-Simulation (LES) model.
V. Anabor, U. Rizza, E. L. Nascimento, G. A. Degrazia   +3 more
doaj   +1 more source

Anisotropic pitch angle distribution of ~100 keV microburst electrons in the loss cone: measurements from STSAT-1 [PDF]

Annales Geophysicae, 2012
Electron microburst energy spectra in the range of 170 keV to 360 keV have been measured using two solid-state detectors onboard the low-altitude (680 km), polar-orbiting Korean STSAT-1 (Science and Technology SATellite-1).
J. J. Lee, G. K. Parks, E. Lee, B. T. Tsurutani, J. Hwang, K. S. Cho, K.-H. Kim, Y. D. Park, K. W. Min, M. P. McCarthy   +9 more
doaj   +1 more source

Observations of Radiation Belt Losses Due to Cyclotron Wave-Particle Interactions [PDF]

, 2020
Electron loss to the atmosphere plays a critical role in driving dynamics of the Earths Van Allen radiation belts and slot region. This is a review of atmospheric loss of radiation belt electrons caused by plasma wave scattering via Doppler-shifted ...
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core   +2 more sources

Relativistic Microburst Scale Size Induced by a Single Point‐Source Chorus Element

Geophysical Research Letters, 2022
Relativistic microbursts are impulsive, sub‐second precipitation bursts of relativistic electrons. They are one of the main loss mechanisms of outer radiation belt electrons, and are driven by chorus waves.
Ning Kang, Jacob Bortnik, Xiaojia Zhang, Seth Claudepierre, Xiaofei Shi   +4 more
doaj   +1 more source

Microbursts at Meter-Decameter Wavelengths [PDF]

Symposium - International Astronomical Union, 1990
A statistical analysis of Clark Lake microbursts was performed using a data base consisting of ~ 100 bursts. The results are: (1) Microburst sources are well correlated with coronal streamers and active regions. (2) The peak brightness temperature (T^) of the microbursts is in the range 6 × 105 K to 6 × 107 K (see Fig.
G. Thejappa, N. Gopalswamy, M. R. Kundu
openaire   +1 more source

Relativistic microburst storm characteristics: Combined satellite and ground-based observations [PDF]

, 2010
We report a comparison of Solar Anomalous Magnetospheric Particle Explorer detected relativistic electron microbursts and short-lived subionospheric VLF perturbations termed FAST events, observed at Sodankyl Geophysical Observatory, Finland, during 2005.
Bortnik, Jacob, Clilverd, Mark A., Dietrich, Sarah, Raita, Tero, Rodger, Craig J.   +4 more
core   +1 more source

Pitch Angle Isotropy of Relativistic Electron Microbursts as Observed by SAMPEX/HILT: Statistical and Storm‐Time Properties

Journal of Geophysical Research: Space Physics, 2022
Observations of relativistic electron precipitation events from Earth's inner magnetosphere to the upper atmosphere provide essential information about the source/loss processes and dynamics of Earth's radiation belts.
C. Meyer‐Reed, L. Blum, M. Shumko
semanticscholar   +1 more source

Comparative analysis of damage surveys and observations with two different types of wind disaster

暴雨灾害, 2020
Damage survey, conventional observations and Doppler weather radar data are used to analyze the tornado occurred on 8 June 2018 at Nanhai District in Foshan City and microbursts occurred on 18 August 2016 at Leizhou County in Zhangjiang City.
Jiangling ZHI, Kanglong CAI, Xianxiang HUANG, Langming YE   +3 more
doaj   +1 more source