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Mostrando ítems 11-20 de 39
Early morning equatorial ionization anomaly from GOLD observations
(American Geophysical Union, 2020-07)
During geomagnetically quiet and solar minimum conditions, spatial variations of the early morning thermosphere‐ionosphere (TI) system are expected to be mainly governed by wave dynamics. To study the postmidnight dynamical ...
Onset conditions for equatorial spread F determined during EQUIS II
(American Geophysical Union, 2005-12-22)
An investigation into the dynamics and layer structure of the postsunset ionosphere prior to the onset of equatorial spread F (ESF) took place during the NASA EQUIS II campaign on Kwajalein Atoll on August 7 and 15, 2004. ...
Solar-wind magnetosphere effects in the middle and low latitude ionosphere
(2004-01-01)
Ionospheric electric fields play fundamental roles in the dynamics of the Earth's ionosphere and thermosphere. Enhanced geomagnetic activity has long been known to cause large ionospheric electric field and current ...
Eddy turbulence parameters inferred from radar observations at Jicamarca
(European Geosciences Union (EGU), 2007-03-08)
Significant electron density striations, neutral temperatures 27 K above nominal, and intense wind shear were observed in the E-region ionosphere over the Jicamarca Radio Observatory during an unusual event on 26 July 2005 ...
Sundial: A world-wide study of interactive ionospheric processes and their roles in the transfer of energy and mass in the sunearth system
(European Geosciences Union, 1988-01-01)
During the period 5-13 October 1984 a coordinated solar-terrestrial data base was acquired to develop a comprehensive understanding and an associated predictive capability for the cause-effect relationships which control ...
Simultaneous 6300 Å airglow and radar observations of ionospheric irregularities and dynamics at the geomagnetic equator
(European Geosciences Union (EGU), 2018-03-22)
In March 2014 an all-sky imager (ASI) was installed at the Jicamarca Radio Observatory (11.95°S, 76.87°W; 0.3°S MLAT). We present results of equatorial spread F (ESF) characteristics observed at Jicamarca and at low ...
The SOUSY-VHF-Radar for tropo-, strato- and mesospheric sounding
(Max-Planck-Institute für Aeronomie, 1976-07)
The development of a VHF-radar in the Harz mountains (F.R.G.) for the study of the dynamics at tropospheric, stratospheric and mesospheric heights was motivated mainly by the question to what extent dynamic processes in ...
Upper atmosphere perturbations at subauroral latitudes during an intense geomagnetic stormPerturbaciones en la atmósfera superior en latitudes subaurorales durante tormentas geomagnéticas intensas
(Universidad Nacional Autónoma de México. Instituto de Geofísica, 2004-12)
Neutral gas density data (molecular nitrogen N2 and atomic oxygen O) between 310 and 330 km of altitude obtained by the Dynamic Explorer 2 satellite and ground-based foF2 data obtained with ionosondes were used to examine ...
Thermosphere-Ionosphere response at middle and high latitudes during perturbed conditions: A case study
(Elsevier, 2008-12)
Neutral gas composition and ionospheric measurements taken by the Dynamic Explorer 2 satellite at F2-region heights (280–300 km) during an intense geomagnetic storm (peak Dst=−187 nT) were used to analyze the role of some ...