Buscar
Mostrando ítems 1-10 de 60
Variations of geomagnetic cutoff rigidity in the southern hemisphere close to 70°W (South-Atlantic Anomaly and Antarctic zones) in the period 1975–2010
(Elsevier Ltd, 2019)
© 2018 COSPARWe report the existence of rapid variations in (effective) geomagnetic cutoff rigidity (Rc) between the equatorial and Antarctic zones adjacent to the Andes Mountains, revealed by the variation rate of geomagnetic ...
Spatial features of geomagnetic cutoff rigidity secular variation using analytical approaches
(Elsevier, 2020-12)
The secular variation spatial pattern of geomagnetic cutoff rigidity, Rc, is analyzed considering analytical expressions. Störmer analytic Rc equation in terms of geomagnetic latitude is used considering a pure dipolar ...
Quantifying solar flux and geomagnetic main field influence on the equatorial ionospheric current system at the geomagnetic observatory Huancayo
(Elsevier, 2017-10)
In order to analyse the sensitivity of the equatorial ionospheric current system, i.e. the solar quiet current system and the equatorial electrojet, to solar cycle variations and to the secular variation of the geomagnetic ...
Geomagnetic Field Model Indicates Shrinking Northern Auroral Oval
(Blackwell Publishing Ltd, 2020-08)
Polar cap and auroral oval areas are presented for the period 1900‐2015 using a model of the magnetosphere and the IGRF‐12 model for the geomagnetic field. The effect of the main field long‐term changes is addressed ...
Latitudinal variation rate of geomagnetic cutoff rigidity in the active Chilean convergent margin
(European Geosciences Union, 2018)
Abstract. We present a different view of secular variation
of the Earth’s magnetic field, through the variations in the
threshold rigidity known as the variation rate of geomagnetic
cutoff rigidity (VRc). As the geomagnetic ...
Observed auroral ovals secular variation inferred from auroral boundary data
(MDPI, 2021-08)
We analyze the auroral boundary corrected geomagnetic latitude provided by the Auroral Boundary Index (ABI) database to estimate long-term changes of core origin in the area enclosed by this boundary during 1983–2016. We ...