Results 21 to 30 of about 9,187 (202)

On Modelling the Convecting Polar Ionosphere

Journal of Computational and Engineering Mathematics, 2019
Summary: In addition to the model of polar ionosphere in terms of ordinary differential equation with random coefficients we construct and investigate two more models: described in terms of a stochastic differential equation in Ito form and in terms of stochastic equation with current velocities (symmetric Nelson's mean derivatives).
Gliklikh, Yu. E., Vlaskov, G. A.
openaire   +3 more sources

Transpolar voltage and polar cap flux during the substorm cycle and steady convection events [PDF]

, 2009
Transpolar voltages observed during traversals of the polar cap by the Defense Meteorological Satellite Program (DMSP) F-13 spacecraft during 2001 are analyzed using the expanding-contracting polar cap model of ionospheric convection.
Ahn, Ahn, Alexis Rouillard, Boudouridis, Boyle, Bristow, Cai, Chisham, Cowley, Cowley, Cowley, Doyle, Eriksson, Fox, Freeman, Freeman, Freeman, Grocott, Hairston, Hairston, Hairston, Hairston, Hanson, Hapgood, Holzer, Hones, Hubert, Ivan Finch, Khan, Kihn, Kivelson, Lagarias, Lockwood, Lockwood, Lockwood, Lockwood, Lockwood, Lockwood, Lockwood, Lockwood, Lockwood, Lockwood, Lockwood, Lu, Lu, Lu, Marc Hairston, Mike Lockwood, Milan, Milan, Milan, Morley, Mozer, Murphree, Nagatsuma, Nakata, Nelder, Newell, Nishida, Papitashvili, Phan, Provan, Reiff, Reiff, Reiff, Ridley, Ridley, Ruohoniemi, Ruohoniemi, Russell, Shepherd, Siscoe, Siscoe, Siscoe, Sonnerup, Weimer, Weimer, Wygant, Zhang   +78 more
core   +1 more source

Auroral streamers: characteristics of associated precipitation,convection and field-aligned currents [PDF]

Annales Geophysicae, 2004
During the long-duration steady convection activity on 11 December 1998, the development of a few dozen auroral streamers was monitored by Polar UVI instrument in the dark northern nightside ionosphere.
V. A. Sergeev, K. Liou, P. T. Newell, S.-I. Ohtani, M. R. Hairston, F. Rich   +5 more
doaj   +1 more source

First E region observations of mesoscale neutral wind interaction with auroral arcs [PDF]

, 2010
We report the first observations of E region neutral wind fields and their interaction with auroral arcs at mesoscale spatial resolution during geomagnetically quiet conditions at Mawson, Antarctica.
Aikio, Anderson, Armstrong, Arnoldy, Aruliah, Aruliah, Aruliah, Aruliah, B. A. Carter, Brekke, Burch, C. Anderson, Chisham, Cierpka, Codrescu, Conde, Conde, Conde, Crickmore, Currie, Davies, del Pozo, Deng, Doe, Doe, Egeland, Friis-Christensen, Fuller-Rowell, Galperin, Greenwald, Heelis, Hernandez, Holmes, Iijima, Iijima, Kamide, Killeen, Killeen, Killeen, Kirkwood, Knudsen, Kosch, Kosch, Kosch, Kosch, Kosch, Kosch, Kosch, Kosch, Larsen, Lewis, M. Conde, M. J. Kosch, Makarevich, McCormac, Millward, Nozawa, Opgenoorth, P. L. Dyson, Price, Price, R. A. D. Fiori, R. A. Makarevich, Rees, Rees, Rees, Ruohoniemi, Schlegel, Schunk, Senior, Senior, Senior, Störmer, T. Davies, Thayer, Tsunoda, Vickrey, Wang, Weimer, Wescott, Zmuda   +80 more
core   +1 more source

Superposed epoch analysis of the ionospheric convection evolution during substorms: onset latitude dependence [PDF]

Annales Geophysicae, 2009
Using data from the Super Dual Auroral Radar Network (SuperDARN) we investigate the ionospheric convection response to magnetospheric substorms. Substorms were identified using the Far Ultraviolet (FUV) instrument on board the Imager for Magnetopause ...
A. Grocott, J. A. Wild, S. E. Milan, T. K. Yeoman   +3 more
doaj   +1 more source

Reconfiguration timescales of ionospheric convection

Geophysical Research Letters, 2001
Changes in ionospheric flow patterns provide direct observations of how the magnetosphere‐ionosphere system is coupled to the IMF. The nature and location of reconnection on the magnetopause is communicated to the ionosphere, which responds by reconfiguring global convection patterns.
D. L. Murr, W. J. Hughes
openaire   +1 more source

Letter to the Editor: First complementary observations by ionospheric tomography, the EISCAT Svalbard radar and the CUTLASS HF radar [PDF]

Annales Geophysicae, 1998
Experimental results are presented from ionospheric tomography, the EISCAT Svalbard radar and the CUTLASS HF radar. Tomographic measurements on 10 October 1996, showing a narrow, field-aligned enhancement in electron density in the post-noon sector of
C. N. Mitchell, I. K. Walker, S. E. Pryse, I. Kersley, I. W. McCrea, T. B. Jones   +5 more
doaj   +1 more source

Effects of electrojet turbulence on a magnetosphere-ionosphere simulation of a geomagnetic storm [PDF]

, 2017
Ionospheric conductance plays an important role in regulating the response of the magnetosphere‐ionosphere system to solar wind driving. Typically, models of magnetosphere‐ionosphere coupling include changes to ionospheric conductance driven by extreme ...
Dimant, Y., Liu, J., Lyon, J.G., Merkin, V., Oppenheim, M., Sitnov, M.I., Stephens, G.K., Toffoletto, F., Wang, W., Wiltberger, M., Zhang, B.   +10 more
core   +1 more source

Magnetospheric convection from Cluster EDI measurements compared with the ground-based ionospheric convection model IZMEM [PDF]

Annales Geophysicae, 2009
Cluster/EDI electron drift observations above the Northern and Southern polar cap areas for more than seven and a half years (2001–2008) have been used to derive a statistical model of the high-latitude electric potential distribution for summer ...
M. Förster, Y. I. Feldstein, S. E. Haaland, S. E. Haaland, L. A. Dremukhina, L. I. Gromova, A. E. Levitin   +6 more
doaj   +1 more source

Plasma convection jets near the poleward boundary of the nightside auroral oval and their relation to Pedersen conductivity gradients [PDF]

Annales Geophysicae, 2010
In this work, we have shown that the ionospheric azimuthal plasma velocity jets near the open-closed field line boundary on the nightside can be associated with the peak in the ionospheric conductivity gradient.
H. Wang, H. Wang, H. Lühr, A. J. Ridley
doaj   +1 more source