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Geomagnetic disturbances analysis using discrete waveletsGeomagnetic disturbances analysis using discrete wavelets
(Instituto de Geofísica, 2010)
The geomagnetic semiannual anomaly on the four Dst-fundamental observatories: Dependences with Sun-Earth physical parameters
(American Geophysical Union, 2012-07)
The semiannual anomaly (also known as semiannual variation) on the magnetic activity is a phenomenon that produces clear minima during March and September and maxima in June and December on the horizontal components of the ...
Theoretical effects of geomagnetic activity on low-latitude ionospheric electric fields
(American Geophysical Union, 2005-05-27)
The influence of geomagnetic activity on middle‐ and low‐latitude thermospheric winds and ionospheric electric fields is investigated using model results from the National Center for Atmospheric Research Thermosphere‐Ion ...
The equatorial stratospheric QBO and geomagnetic activity
(Elsevier, 2005-12)
The quasi-biennial oscillation (QBO) of the zonal wind in the equatorial stratosphere is analyzed in connection to geomagnetic activity as measured by the disturbance storm time (Dst) index. A running correlation between ...
Comparison between indices during geomagnetic disturbances at ThuleComparación entre índices durante las perturbaciones geomagnéticas en Thule
(Universidad Nacional Autónoma de México. Instituto de Geofísica, 2004-12)
Auroral indices AE, AU, AL, and Troshichev index from Thule, PC (Polar Cap) are compared for geomagnetic disturbances of different intensities. To identify perturbations, the indices Dst and AE have been used. Fourteen ...
Anomalous night-time peaks in diurnal variations of NmF2 close to the geomagnetic equator: A statistical study
(Elsevier, 2007-11)
We present a study of anomalous night-time NmF2 peaks, ANNPs, observed by the La Paz, Natal, Djibouti, Kodaikanal, Madras, Manila, Talara, and Huancayo–Jicamarca ionosonde stations close to the geomagnetic equator. It is ...