Alina Marie Hasbi

TL;DR: In this article, the authors investigated the ionospheric variations before some large earthquakes that occurred during 2004-2007 in Sumatra using GPS and CHAMP data and found that positive and negative anomalies detected within a few hours to 6 days before the earthquakes mostly occur during the daytime hours between 4 and 17 LT.

TL;DR: In this article, a dual-frequency GISTM (GPS Ionospheric Scintillation and TEC monitor) at Universiti Kebangsaan Malaysia station, Malaysia (2.55°N, 101.46°E; geomagnetic: 7.39°S, 173.63°E) was used to investigate the occurrence of ionospheric scintillation with S4≥0.2.

TL;DR: In this paper, the occurrence rate of the equatorial plasma bubble (EPB) with season, solar activity, and geomagnetic conditions are investigated using long-term data sets of Malaysia Real-Time Kinematics Network (MyRTKnet) from 2008 to 2013.

TL;DR: In this article, the authors used high-density GPS receivers located in Southeast Asia (SEA) to study the two-dimensional structure of ionospheric plasma irregularities in the equatorial region.

TL;DR: In this paper, the authors investigated the ionospheric and geomagnetic responses during the 28 March 2005 and 14 May 2005 Sumatran earthquakes using GPS and magnetometer stations located in the near zone of the epicenters.