Ionosphere response to recurrent geomagnetic activity in 1974

Response of the Antarctic Ionosphere to Some Intense Geomagnetic Storms

Method: For this purpose, foF2 data from four Antarctic stations were analyzed during three intense magnetic storms occurred in high solar activity (years 2002 and 2003). In general, negative storm effects irrespective of the local time were observed during the first part of the storms (main phase). Negative effects were also observed more often than positive effects during the first part of th...

Dayside ionospheric response to recurrent geomagnetic activity during the extreme solar minimum of 2008

[1] Global observations of electron density profiles from the COSMIC satellites are used to investigate, for the first time, the altitudinal dependence of the ionospheric response to the recurrent geomagnetic activity at different latitudinal regions during the extreme solar minimum period of 2008. Our results show that the 9-day oscillations in NmF2 are out of phase with those in Kp at high la...

Disturbances of the Low Latitude Ionosphere During Extremes of Geomagnetic Activity

Various observational tools are available for the study of F-layer irregularities in the equatorial region. These include optical observations of the depletion of electron density, GPS phase fluctuations, DMSP in situ observations of ion depletions, radar observations of coherent scatter from equatorial irregularities, and ionospheric soundings. Each makes contributions to observational studies...

Mid-latitude Vertical Transmission of Geomagnetic Micropulsations through the Ionosphere

Modelling Geomagnetic Activity Data

Strong geomagnetic activity is a hazard to electronics and electric power facilities. Assessment of the actual geomagnetic activity level from local magnetometer monitoring therefore is of importance for risk assessment but also in earth sciences and exploration. Wavelet based signal processing methods are applied to extract meaningful information from magnetic field time series in a noisy envi...