International audienceMesospheric observations were obtained by the EISCAT UHF and VHF radars during the solar proton event of March 1990. We present the first comparison of incoherent-scatter spectral measurements from the middle mesosphere using simultaneous, co-located observations by the two radars. VHF spectra observed with a vertical antenna were found to be significantly narrower than model predictions, in agreement with earlier UHF results. For antenna pointing directions that were significantly away from the vertical, the wider VHF radar beam gave rise to broadening of the observed spectra due to vertical shears in the horizontal wind. In this configuration, UHF spectral measurements were found to be more suitable for aeronomical a...
Published online: 19 October 2015The application of medium-frequency (MF) and high-frequency (HF) pa...
International audienceOn 30 October 2004 during a strong solar proton event, layers of enhanced back...
We describe results of an experiment conducted with the European Incoherent Scatter (EISCAT) radars ...
Mesospheric observations were obtained by the EISCAT UHF and VHF radars during the solar proton eve...
International audienceOn 5 July 2005, simultaneous observations of Polar Mesosphere Summer Echoes (P...
In the present paper ~ 32.5 h of EISCAT VHF PMWE observations were analyzed with focus on spectral p...
The antennas of EISCAT have been used for interplanetary scintillation (IPS) studies of the solar wi...
The principal capabilities of EISCAT as an MST radar were described. Since the VHF transmitter of th...
International audienceWe have noted sporadic instances of strong isolated reflections of medium freq...
The plasma-neutral coupling in the mesosphere-lower thermosphere strongly depends on the ion-neutral...
A unique experiment was undertaken during the nights of 27 and 28 February 2003. Tristatic Fabry-Per...
International audienceThe Doppler shifts of meteor echoes measured by the SuperDARN HF radar network...
International audiencePolar mesosphere summer echoes (PMSEs) have been well studied using vertical i...
The ESRAD 52-MHz and the EISCAT 224-MHz radars in northern Scandinavia observed thin layers of stron...
International audienceThe VHF radar system at Aberystwyth (52.4° N, 4.1°E) has been used to make hig...
Published online: 19 October 2015The application of medium-frequency (MF) and high-frequency (HF) pa...
International audienceOn 30 October 2004 during a strong solar proton event, layers of enhanced back...
We describe results of an experiment conducted with the European Incoherent Scatter (EISCAT) radars ...
Mesospheric observations were obtained by the EISCAT UHF and VHF radars during the solar proton eve...
International audienceOn 5 July 2005, simultaneous observations of Polar Mesosphere Summer Echoes (P...
In the present paper ~ 32.5 h of EISCAT VHF PMWE observations were analyzed with focus on spectral p...
The antennas of EISCAT have been used for interplanetary scintillation (IPS) studies of the solar wi...
The principal capabilities of EISCAT as an MST radar were described. Since the VHF transmitter of th...
International audienceWe have noted sporadic instances of strong isolated reflections of medium freq...
The plasma-neutral coupling in the mesosphere-lower thermosphere strongly depends on the ion-neutral...
A unique experiment was undertaken during the nights of 27 and 28 February 2003. Tristatic Fabry-Per...
International audienceThe Doppler shifts of meteor echoes measured by the SuperDARN HF radar network...
International audiencePolar mesosphere summer echoes (PMSEs) have been well studied using vertical i...
The ESRAD 52-MHz and the EISCAT 224-MHz radars in northern Scandinavia observed thin layers of stron...
International audienceThe VHF radar system at Aberystwyth (52.4° N, 4.1°E) has been used to make hig...
Published online: 19 October 2015The application of medium-frequency (MF) and high-frequency (HF) pa...
International audienceOn 30 October 2004 during a strong solar proton event, layers of enhanced back...
We describe results of an experiment conducted with the European Incoherent Scatter (EISCAT) radars ...