Results 11 to 20 of about 819 (150)

Review of the accomplishments of mid-latitude Super Dual Auroral Radar Network (SuperDARN) HF radars

Progress in Earth and Planetary Science, 2019
The Super Dual Auroral Radar Network (SuperDARN) is a network of high-frequency (HF) radars located in the high- and mid-latitude regions of both hemispheres that is operated under international cooperation.
Steve Milan, Mark Lester, Evan G Thomas
exaly   +3 more sources

Significant Plasma Density Depletion From High- to Mid-Latitude Ionosphere During the Super Storm in May 2024

Geophysical Research Letters
We demonstrate the global response of the ionosphere to the geomagnetic super storm on 10–11 May 2024. The in situ observations from the Swarm spacecraft show a rapid depletion of plasma density in the dawn and dusk sectors following the storm.
Daria Kotova, Yaqi Jin, Wojciech J. Miloch   +2 more
exaly   +2 more sources

A regional classification of time spectral amplitudes in total electron content: Southeastern United States during solar cycle 24

Frontiers in Astronomy and Space Sciences, 2022
To investigate the meso-scale structure (100 s of km) of the ionosphere at mid-latitudes, the spectral properties in calculated total electron content (TEC) at a cluster of GPS receivers in and around Florida are analyzed. The ionosphere does not respond
B. L. Burkholder, B. L. Burkholder, R. Cuellar, K. Nykyri, X. Ma, S. Debchoudhury   +5 more
doaj   +1 more source

Letter to the Editor
Effects of hot oxygen in the ionosphere: TRANSCAR simulations [PDF]

Annales Geophysicae, 2001
Recent studies of the ion energy balance in the mid-latitude ionosphere have led to the suggestion that hot neutral atomic oxygen may play a significant role; the presence of a population of hot O could explain some of the problems met in balancing ...
D. Alcaydé, D. Alcaydé, P.-L. Blelly, W. Kofman, A. Litvin, W. L. Oliver   +5 more
doaj   +1 more source

Application of generalized singular value decomposition to ionospheric tomography [PDF]

Annales Geophysicae, 2004
The electron density distribution of the low- and mid-latitude ionosphere has been investigated by the computerized tomography technique using a Generalized Singular Value Decomposition (GSVD) based algorithm. Model ionospheric total electron content (
K. Bhuyan, S. B. Singh, P. K. Bhuyan
doaj   +1 more source

On the Properties of and Ionospheric Conditions Associated With a Mid‐Latitude Scintillation Event Observed Over Southern United States

Space Weather, 2021
While low and high‐latitude ionospheric scintillation have been extensively reported, significantly less information is available about the properties of and conditions leading to mid‐latitude scintillations.
F. S. Rodrigues, J. G. Socola, A. O. Moraes, C. Martinis, D. A. Hickey   +4 more
doaj   +1 more source

Responding trends of ionospheric F2-layer to weaker geomagnetic activities

Journal of Space Weather and Space Climate, 2022
Geomagnetic activities frequently occur in varying degrees. Strong geomagnetic activities, which have been widely investigated, occur occasionally; they can cause distinguishable and significant disturbances in the ionosphere.
Chen Yiding, Liu Libo, Le Huijun, Zhang Hui, Zhang Ruilong   +4 more
doaj   +1 more source

The 22-year cycle in the geomagnetic 27-day recurrences reflecting on the F2-layer ionization [PDF]

Annales Geophysicae, 2004
Solar cycle variations of the amplitudes of the 27-day solar rotation period reflected in the geomagnetic activity index Ap, solar radio flux F10.7cm and critical frequency foF2 for mid-latitude ionosonde station Moscow from the maximum of sunspot ...
E. M. Apostolov, D. Altadill, M. Todorova   +2 more
doaj   +1 more source

Vertical motion of ionization induced by the linear interaction of tides with planetary waves [PDF]

Annales Geophysicae, 2003
Experimental findings have shown that travelling planetary waves modulate the occurrence of mid-latitude sporadic-E-layers. Using a simple quantitative model, we analyse the effects of the linear interaction between tides and planetary waves on ion
M. Voiculescu, M. Ignat
doaj   +1 more source

Simulation study of the large-scale modification of the mid-latitude F-layer by HF radio waves with different powers [PDF]

Annales Geophysicae, 2012
A mathematical model of the ionosphere, developed earlier, is applied to investigate the large-scale mid-latitude F-layer modification by HF radio waves with different powers. Simulations are performed for the point with geographic coordinates of the "
G. I. Mingaleva, V. S. Mingalev, O. V. Mingalev   +2 more
doaj   +1 more source