Investigation of ionospheric scintillation at UKM station, Malaysia during low solar activity

Aramesh Seif, Mardina Abdullah, Alina Marie Hasbi, Yuhua Zou

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

In this paper the investigation of the occurrence of ionospheric scintillation with S4 > 0.2 was conducted by using a dual-frequency GISTM (GPS Ionospheric Scintillation and TEC monitor) at Universiti Kebangsaan Malaysia station, Malaysia (2.55N, 101.46E; geomagnetic: 7.39S, 173.63E) between September 2009 and December 2010. The study shows that significant nighttime amplitude scintillation event with 0.4 r S4 < 0.6 mainly occurred in the months of March, September and October, while significant daytime amplitude scintillation activity took place in November and December with 0.3 r S4 < 0.5. Moreover, nighttime amplitude scintillation observed at UKM station always occurred with phase scintillations, total electron content (TEC) depletions, rate of change of TEC (ROT) fluctuations and the enhancement of rate of TEC index (ROTI). Nevertheless, during daytime amplitude scintillation, TEC depletions and ROT fluctuations were much weaker than those that occurred during nighttime and this may be caused by small scale irregularities in the E region, called sporadic-E (Es), while the occurrences of nighttime amplitude scintillation maybe caused by the ionospheric irregularities in the F region.

Original languageEnglish
Pages (from-to)92-101
Number of pages10
JournalActa Astronautica
Volume81
DOIs
Publication statusPublished - Dec 2012

Fingerprint

Scintillation
Electrons
E region
F region
Global positioning system

Keywords

  • GPS
  • Ionospheric irregularities
  • Ionospheric scintillation

ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Investigation of ionospheric scintillation at UKM station, Malaysia during low solar activity. / Seif, Aramesh; Abdullah, Mardina; Hasbi, Alina Marie; Zou, Yuhua.

In: Acta Astronautica, Vol. 81, 12.2012, p. 92-101.

Research output: Contribution to journalArticle

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