Results 131 to 140 of about 3,254 (234)

Coordinated optical and radar observations of ionospheric pumping for a frequency pass through the second electron gyroharmonic at HAARP [PDF]

, 2007
On 4 February 2005, the High-frequency Active Auroral Research Program (HAARP) facility was operated in O and X mode while pointing into the magnetic zenith to produce artificial optical emissions in the ionospheric F layer. The pump frequency was set to
Senior, Andrew, Pedersen, T., Kosch, Mike J., Bristow, B., Mishin, E., Watkins, B., Hughes, J., Oyama, S.   +7 more
core  

Surface-to-space atmospheric waves from Hunga Tonga-Hunga Ha'apai eruption. [PDF]

Nature, 2022
Wright CJ, Hindley NP, Alexander MJ, Barlow M, Hoffmann L, Mitchell CN, Prata F, Bouillon M, Carstens J, Clerbaux C, Osprey SM, Powell N, Randall CE, Yue J.   +13 more
europepmc   +1 more source

Přirozený svit noční oblohy a vlnové děje v atmosféře =Airglow and wave phenomena in the atmosphere

, 2015
Přirozený svit noční oblohy, angl. označovaný jako airglow, je již dlouho znám především v astronomii, pro kterou představuje možnou komplikaci fotografického průzkumu hlubin vesmíru.
Bednář, Jan, Setvák, Martin
core  

Unambiguous evidence of HF pump-enhanced airglow at auroral latitudes

, 1999
Simultaneous observations by up to three low-light imaging stations belonging to the Auroral Large Imaging System (ALIS) have provided the first strong evidence of high-frequency (HF) pump-enhanced airglow at auroral latitudes.
Aso, T, Gustavsson, B, Ejiri, M, Rietveld, MT, Leyser, TB, Brandstrom, BUE,, Steen, A   +6 more
core  

Analysis of excitation of the 630.0 nm airglow during a heating experiment in Troms on February 16, 1999 [PDF]

, 2000
Rietveld, M. T., Gustavsson, B., Steen, AA., Rietveld, M., Steen, Å., Leyser, T. B., Brändström, U., Honary, F., Sergienko, T.   +8 more
core  

Tomographic Imaging of Airglow from Airborne Spectroscopic Measurements

, 2008
A description is given of the methodology based on a single, aircraft-mounted spectroscopic imager to tomographically reconstruct airglow perturbations induced by atmospheric gravity waves.
Kamalabadi, Farzad, Liu, Alan, Anderson, D. Scott, Swenson,, Gary   +3 more
core  

First ICON-FUV Nighttime NmF2 and hmF2 Comparison to Ground and Space-Based Measurements. [PDF]

J Geophys Res Space Phys, 2021
Wautelet G, Hubert B, Gérard JC, Immel TJ, Frey HU, Mende SB, Kamalabadi F, Kamaci U, England SL.   +8 more
europepmc   +1 more source

Characteristics of spatial discontinuities in the lambda 5577 angstrom emission of atomic oxygen in airglow

, 1969
Electrophotometric observations on spatial discontinuities of green atomic oxygen line in airglow ...
Nasyrov, G. A.
core  

Functional characteristics of the OGO main body airglow photometer

, 1972
The OGO-4 main body airglow photometer used a trialkali cathode photomultiplier to sense light at selected wavelengths between 2500 and 6300A corresponding to important emissions in the aurora and night airglow at emission rates ranging from a few ...
Blamont, J. E., Fowler, W. B., Reed, E. I.   +2 more
core  

Inter-comparison of Mars Upper Atmosphere Neutral Density and Temperature Datasets from MAVEN. [PDF]

Space Sci Rev
Jones N, Evans JS, Gupta S, Jain S, Pilinski M, Stone SW, Thiemann EMB, Schneider N, Curry S.   +8 more
europepmc   +1 more source