Amplitude enhancement of short period GPS-TEC oscillations over rainfall area

Observational Analysis of Variation Characteristics of GPS-Based TEC Fluctuation over China

In this study, the characteristics of the total electron content (TEC) fluctuations and their regional differences over China were analyzed by utilizing the rate of the TEC index (ROTI) based on GPS data from 21 reference stations across China during a solar cycle. The results show that there were significant regional differences at different latitudes. Strong ionospheric TEC fluctuations were ...

First simultaneous observations of daytime MSTIDs over North America using GPS-TEC and DEMETER satellite data

Gps-derived Local Tec Mapping over Peninsula Malaysia during Solar Minimum of Sunspot Cycle 24

The ionosphere is the major contributor of errors in Global Positioning System (GPS), especially during the 11-year sunspot cycle. The incoming 11-year sunspot cycle is expected to peak in 2013. The ionosphere condition is distinctly severe during ionospheric disturbances caused by high solar activity, which raises the question of how will this affect the ionosphere in the equatorial region, es...

Amplitude + − Period

Using sound to complement graphics and to present data is becoming increasingly popular. Sound can potentially reveal patterns and anomalies in data that are diicult to perceive visually. Moreover, psychological studies show that some types of data are more quickly assimilated when presented with sound; an audio alarm is the classic example. Unfortunately, the lack of standards governing the so...

Solar-Like Oscillations in β Hydri: Evidence for Short-Lived High-Amplitude Oscillations

Velocity measurements of the G2 subgiant β Hyi with both UCLES and CORALIE show a clear excess of power centred at 1.0mHz. In the UCLES data we find evidence for a short-lived, high-amplitude oscillation event. If confirmed as a feature of subgiants, such ‘starquakes’ would make it harder to measure accurate mode frequencies and perform asteroseismology.