Response of the Earth’s lower ionosphere to the Ground Level Enhancement event of December 13, 2006
| Autor: | Vida Žigman, Davorka Grubor, Karel Kudela |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Physics
Atmospheric Science Electron density 010504 meteorology & atmospheric sciences Wave propagation Astrophysics::High Energy Astrophysical Phenomena Aerospace Engineering Astronomy and Astrophysics Cosmic ray Electron 01 natural sciences Physics::Geophysics Computational physics Geophysics Space and Planetary Science Ionization Physics::Space Physics 0103 physical sciences General Earth and Planetary Sciences Ionosphere Very low frequency Atomic physics 010303 astronomy & astrophysics Recombination 0105 earth and related environmental sciences |
| Zdroj: | Advances in Space Research. 53:763-775 |
| ISSN: | 0273-1177 |
| DOI: | 10.1016/j.asr.2013.12.026 |
| Popis: | In this study we analyze the Ground Level Enhancement Event No 70 observed on December 13, 2006, by correlating the observations from two research topics: Cosmic rays and Very Low Frequency (VLF www.swpc.noaa.gov ) and Pamela ( www.pamela.roma2infn.it ). We have evaluated the ionization rate for protons in the altitude range relevant to VLF propagation, and for galactic cosmic ray (GCR) background, finding that at energies up to ∼2 GeV the ionization rate of solar protons exceeded the GCR ionization by 1.5 orders of magnitude. We have applied the Long Wave Propagation Capability (LWPC) code to evaluate the enhancement of the electron density from VLF signal perturbation and have inferred corresponding electron densities from the evaluated ionization rates and effective recombination coefficients from literature, to find the two independent sets in good agreement. |
| Databáze: | OpenAIRE |
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