Results 41 to 50 of about 22,029 (223)

Ionospheric control of space weather [PDF]

open access: yesAnnales Geophysicae, 2021
As proposed by Saka (2019), plasma injections arising out of the auroral ionosphere (ionospheric injection) are a characteristic process of the polar ionosphere at substorm onset.
O. Saka
doaj   +1 more source

Anomalous electron heating effects on the E region ionosphere in TIEGCM [PDF]

open access: yes, 2016
We have recently implemented a new module that includes both the anomalous electron heating and the electron‐neutral cooling rate correction associated with the Farley‐Buneman Instability (FBI) in the thermosphere‐ionosphere electrodynamics global ...
Dimant, Yakov   +5 more
core   +1 more source

On Modelling the Convecting Polar Ionosphere

open access: yesJournal 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

Central polar cap convection response to short duration southward Interplanetary Magnetic Field [PDF]

open access: yesAnnales Geophysicae, 2000
Central polar cap convection changes associated with southward turnings of the Interplanetary Magnetic Field (IMF) are studied using a chain of Canadian Advanced Digital Ionosondes (CADI) in the northern polar cap.
P. T. Jayachandran   +2 more
doaj   +1 more source

Do the Throat Auroras Create Polar Cap Patches?

open access: yesGeophysical Research Letters, 2023
Throat auroras and polar cap patches are common phenomena in the polar ionosphere resulting from magnetosphere‐ionosphere coupling. A campaign was organized, with all‐sky imagers at Yellow River Station, the European Incoherent Scatter Svalbard Radar ...
Duan Zhang   +12 more
doaj   +1 more source

Navigation GPS/GLONASS in the Arctic and aurora [PDF]

open access: yesVestnik MGTU, 2016
The correspondence of the time-spatial distribution of the radiances of the aurora oval and time-spatial changes in the parameters of the navigation satellites' signal has been shown.
Chernouss S. A.   +3 more
doaj   +1 more source

Seasonal variations and north–south asymmetries in polar wind outflow due to solar illumination [PDF]

open access: yesAnnales Geophysicae, 2016
The cold ions (energy less than several tens of electronvolts) flowing out from the polar ionosphere, called the polar wind, are an important source of plasma for the magnetosphere.
L. Maes   +3 more
doaj   +1 more source

Evidence for solar-production as a source of polar-cap plasma [PDF]

open access: yesAnnales Geophysicae, 2004
The focus of the study is a region of enhanced ionospheric densities observed by the EISCAT Svalbard radar in the polar F-region near local magnetic noon under conditions of IMF Bz<0.
S. E. Pryse   +6 more
doaj   +1 more source

Ion and neutral temperature distributions in the E-region observed by the EISCAT Tromsø and Svalbard radars [PDF]

open access: yesAnnales Geophysicae, 2002
Simultaneous Common Program Two experiments by the EISCAT UHF radar at Tromsø and the EISCAT Svalbard radar at Longyearbyen from 00:00 to 15:00 UT on 22 September 1998 and 9 March 1999 have been utilized to investigate distributions of the ion and
S. Maeda   +5 more
doaj   +1 more source

Polar cap arcs from the magnetosphere to the ionosphere: kinetic modelling and observations by Cluster and TIMED [PDF]

open access: yesAnnales Geophysicae, 2012
On 1 April 2004 the GUVI imager onboard the TIMED spacecraft spots an isolated and elongated polar cap arc. About 20 min later, the Cluster satellites detect an isolated upflowing ion beam above the polar cap.
R. Maggiolo   +7 more
doaj   +1 more source

Home - About - Disclaimer - Privacy