Investigation of the D-region ionosphere characteristics using tweek atmospherics at low latitudes

Khairul Khaizi Mohd Shariff, Mohammad Mohammadpour Salut, Mardina Abdullah, Kevin Lloyd Graf

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Tweek atmospherics emitted from lightning discharges can be utilized to monitor the night-time D-region ionosphere. This paper presents the observation of tweek atmospherics received at Universiti Kebangsaan Malaysia (UKM) (2.55°N, 101.46°E) during August 2009 and October 2010. Analysis of 1383 tweeks demonstrates that these ELF/VLF signals travel considerable distances, up to 7200 km from the causative lightning discharges. The occurrence rates of tweeks in higher modes drop significantly from 962 for the first mode to 2 for the sixth mode due to the higher attenuation for the higher harmonic tweeks. The fundamental cut-off frequency of tweeks is used to measure the night-time variations of the lower ionosphere's height and equivalent electron density near the equatorial regions. the estimated ionosphere reflection height varies from 73 to 87 km and the estimated equivalent electron density at the reflection height varies from 24 to 28 el/cm3.

Original languageEnglish
Title of host publication2011 IEEE International Conference on Space Science and Communication: "Towards Exploring the Equatorial Phenomena", IconSpace 2011 - Proceedings
Pages130-133
Number of pages4
DOIs
Publication statusPublished - 2011
Event2011 IEEE International Conference on Space Science and Communication: "Towards Exploring the Equatorial Phenomena", IconSpace 2011 - Penang
Duration: 12 Jul 201113 Jul 2011

Other

Other2011 IEEE International Conference on Space Science and Communication: "Towards Exploring the Equatorial Phenomena", IconSpace 2011
CityPenang
Period12/7/1113/7/11

Fingerprint

D region
Ionosphere
tropical regions
ionospheres
ionosphere
Atmospherics
lightning
Lightning
night
electron density
Carrier concentration
Malaysia
lower ionosphere
equatorial regions
travel
Cutoff frequency
cut-off
attenuation
occurrences
harmonics

Keywords

  • D-Region Ionosphere
  • Lightning Discharge
  • Tweek atmospherics
  • Very Low Frequency (VLF)

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics
  • Communication

Cite this

Shariff, K. K. M., Salut, M. M., Abdullah, M., & Graf, K. L. (2011). Investigation of the D-region ionosphere characteristics using tweek atmospherics at low latitudes. In 2011 IEEE International Conference on Space Science and Communication: "Towards Exploring the Equatorial Phenomena", IconSpace 2011 - Proceedings (pp. 130-133). [6015867] https://doi.org/10.1109/IConSpace.2011.6015867

Investigation of the D-region ionosphere characteristics using tweek atmospherics at low latitudes. / Shariff, Khairul Khaizi Mohd; Salut, Mohammad Mohammadpour; Abdullah, Mardina; Graf, Kevin Lloyd.

2011 IEEE International Conference on Space Science and Communication: "Towards Exploring the Equatorial Phenomena", IconSpace 2011 - Proceedings. 2011. p. 130-133 6015867.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Shariff, KKM, Salut, MM, Abdullah, M & Graf, KL 2011, Investigation of the D-region ionosphere characteristics using tweek atmospherics at low latitudes. in 2011 IEEE International Conference on Space Science and Communication: "Towards Exploring the Equatorial Phenomena", IconSpace 2011 - Proceedings., 6015867, pp. 130-133, 2011 IEEE International Conference on Space Science and Communication: "Towards Exploring the Equatorial Phenomena", IconSpace 2011, Penang, 12/7/11. https://doi.org/10.1109/IConSpace.2011.6015867
Shariff KKM, Salut MM, Abdullah M, Graf KL. Investigation of the D-region ionosphere characteristics using tweek atmospherics at low latitudes. In 2011 IEEE International Conference on Space Science and Communication: "Towards Exploring the Equatorial Phenomena", IconSpace 2011 - Proceedings. 2011. p. 130-133. 6015867 https://doi.org/10.1109/IConSpace.2011.6015867
Shariff, Khairul Khaizi Mohd ; Salut, Mohammad Mohammadpour ; Abdullah, Mardina ; Graf, Kevin Lloyd. / Investigation of the D-region ionosphere characteristics using tweek atmospherics at low latitudes. 2011 IEEE International Conference on Space Science and Communication: "Towards Exploring the Equatorial Phenomena", IconSpace 2011 - Proceedings. 2011. pp. 130-133
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