Articles | Volume 16, issue 5
https://doi.org/10.5194/acp-16-3279-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-16-3279-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Semi-annual oscillation (SAO) of the nighttime ionospheric D region as detected through ground-based VLF receivers
Department of Geosciences, Tel Aviv University, Tel Aviv,
Israel
Colin Price
Department of Geosciences, Tel Aviv University, Tel Aviv,
Israel
Craig J. Rodger
Department of Physics, University of Otago, Dunedin, New
Zealand
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Cited
12 citations as recorded by crossref.
- A Study on the VLF/LF Long Term Amplitude Oscillations Associated with Frequencies 37.5 kHz and 45.9 kHz Received at Keil Longwave Monitor, Keil, Germany G. Sharma et al. 10.4236/ijg.2017.89061
- Variability of the Brunt–Väisälä frequency at the OH<sup>∗</sup>-airglow layer height at low and midlatitudes S. Wüst et al. 10.5194/amt-13-6067-2020
- Global GNSS-RO Electron Density in the Lower Ionosphere D. Wu et al. 10.3390/rs14071577
- On the Use of VLF Narrowband Measurements to Study the Lower Ionosphere and the Mesosphere–Lower Thermosphere I. Silber & C. Price 10.1007/s10712-016-9396-9
- One day prediction of nighttime VLF amplitudes using nonlinear autoregression and neural network modeling H. Santosa & Y. Hobara 10.1002/2016RS006022
- Diurnal and seasonal amplitude and phase variations of the radio signals of RSDN-20 transmitters and the intensity of radio noise (11.9 kHz) registered in Yakutsk during 2009-2017 . Корсаков et al. 10.26117/2079-6641-2021-34-1-122-136
- Nighttime lower ionosphere height estimation from the VLF modal interference distance J. Samanes et al. 10.1016/j.jastp.2017.10.009
- Seasonal variations of mesopause temperature and the amplitude of the VLF signals of the Novosibirsk radio station during 2009-2016 A. Korsakov et al. 10.1051/e3sconf/20172001005
- D‐Region High‐Latitude Forcing Factors E. Macotela et al. 10.1029/2018JA026049
- The leading role of atomic oxygen in the collocation of elves and hydroxyl nightglow in the low‐latitude mesosphere Y. Wu et al. 10.1002/2016JA023681
- Annual and semi-annual variations of TEC over Nepal during the period of 2007–2017 and possible drivers B. Ghimire et al. 10.1007/s11600-021-00721-3
- Annual and semi-annual variations of TEC over Nepal during the period of 2007–2017 and possible drivers B. Ghimire et al. 10.1007/s11600-021-00721-3
11 citations as recorded by crossref.
- A Study on the VLF/LF Long Term Amplitude Oscillations Associated with Frequencies 37.5 kHz and 45.9 kHz Received at Keil Longwave Monitor, Keil, Germany G. Sharma et al. 10.4236/ijg.2017.89061
- Variability of the Brunt–Väisälä frequency at the OH<sup>∗</sup>-airglow layer height at low and midlatitudes S. Wüst et al. 10.5194/amt-13-6067-2020
- Global GNSS-RO Electron Density in the Lower Ionosphere D. Wu et al. 10.3390/rs14071577
- On the Use of VLF Narrowband Measurements to Study the Lower Ionosphere and the Mesosphere–Lower Thermosphere I. Silber & C. Price 10.1007/s10712-016-9396-9
- One day prediction of nighttime VLF amplitudes using nonlinear autoregression and neural network modeling H. Santosa & Y. Hobara 10.1002/2016RS006022
- Diurnal and seasonal amplitude and phase variations of the radio signals of RSDN-20 transmitters and the intensity of radio noise (11.9 kHz) registered in Yakutsk during 2009-2017 . Корсаков et al. 10.26117/2079-6641-2021-34-1-122-136
- Nighttime lower ionosphere height estimation from the VLF modal interference distance J. Samanes et al. 10.1016/j.jastp.2017.10.009
- Seasonal variations of mesopause temperature and the amplitude of the VLF signals of the Novosibirsk radio station during 2009-2016 A. Korsakov et al. 10.1051/e3sconf/20172001005
- D‐Region High‐Latitude Forcing Factors E. Macotela et al. 10.1029/2018JA026049
- The leading role of atomic oxygen in the collocation of elves and hydroxyl nightglow in the low‐latitude mesosphere Y. Wu et al. 10.1002/2016JA023681
- Annual and semi-annual variations of TEC over Nepal during the period of 2007–2017 and possible drivers B. Ghimire et al. 10.1007/s11600-021-00721-3
1 citations as recorded by crossref.
Saved (final revised paper)
Latest update: 13 Dec 2024
Short summary
We report for the first time that the semi-annual oscillation (SAO) is one of the dominant oscillations in the nighttime lower ionosphere, using ground-based measurements of VLF signals reflected off the lower part of the ionosphere. We conclude that the origins of this oscillation are oscillatory changes of the D region's electrical characteristics, driven by NOx transport from the lower thermosphere. This oscillation should be considered in lower ionospheric and VLF wave propagation models.
We report for the first time that the semi-annual oscillation (SAO) is one of the dominant...
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