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pro vyhledávání: '"Niels Olsen Saraiva Camara"'
Publikováno v:
Geophysical Research Letters. 46:4230-4238
Autor:
Niels Olsen Saraiva Camara, Karl M. Laundal, Nils Olsen, Jone Peter Reistad, Christopher C. Finlay
Publikováno v:
Journal of Geophysical Research-Space Physics
Laundal, K M, Finlay, C C, Olsen, N & Reistad, J P 2018, ' Solar wind and seasonal influence on ionospheric currents from Swarm and CHAMP measurements ', Journal of Geophysical Research: Space Physics, vol. 123, no. 5, pp. 4402-4429 . https://doi.org/10.1029/2018JA025387
Laundal, K M, Finlay, C C, Olsen, N & Reistad, J P 2018, ' Solar wind and seasonal influence on ionospheric currents from Swarm and CHAMP measurements ', Journal of Geophysical Research: Space Physics, vol. 123, no. 5, pp. 4402-4429 . https://doi.org/10.1029/2018JA025387
We present a new climatological model of the ionospheric current system, determined from magnetic measurements taken by the Challenging Minisatellite Payload (CHAMP) and Swarm satellites. The model describes the horizontal currents in the ionosphere,
Autor:
Niels Olsen Saraiva Camara, Nils Olsen
Publikováno v:
Journal of Geophysical Research: Space Physics. 102:4563-4576
Two methods for determining the F region current density at satellite heights by means of a decomposition of the magnetic field into toroidal and poloidal parts are presented. The first method allows for determination of the radial current component
Autor:
Niels Olsen Saraiva Camara, Nils Olsen
Publikováno v:
Geophysical Research Letters. 21:1125-1128
Geomagnetic daily variations are produced at a height of about 100 to 130 km due to dynamo action of thermospheric winds in combination with the ionospheric conductivity. They are influenced by longterm variability of thermospheric dynamics and are u
Autor:
Niels Olsen Saraiva Camara, Nils Olsen, Susanne Vennerstrøm, Freddy Christiansen, Therese Moretto
Publikováno v:
Geophysical Research Letters. 34
[1] An analysis of the effect of the IMF By on near-Earth low and mid-latitude magnetic disturbances is presented. In particular the contribution from field-aligned currents (FACs) connected to the polar regions is investigated. Based on statisticall
A global model of mantle conductivity derived from 5 years of CHAMP, Ørsted, and SAC-C magnetic data
Publikováno v:
Geophysical Research Letters. 33
[1] We present a global 1-D conductivity model which is obtained by analysis of five years (2001–2005) of simultaneous magnetic data from the three satellites Orsted, CHAMP and SAC-C. After removal of core and crustal fields as predicted by a recen