期刊: ANNALES GEOPHYSICAE, 2021; 39 (2)
Ensemble simulation of the atmospheric general circulation at altitudes up to the lower thermosphere is performed using the 3-D nonlinear mechanistic ......
期刊: ANNALES GEOPHYSICAE, 2021; 39 (4)
We investigate the reflection of low-harmonic fast magnetosonic (MS) waves at the local two-ion cutoff frequency (f(cutHe+)). By comparing the wave si......
期刊: ANNALES GEOPHYSICAE, 2021; 39 (4)
The concept that geospace storms are comprised of synergistically coupled magnetic storms, ionospheric storms, atmospheric storms, and storms in the e......
期刊: ANNALES GEOPHYSICAE, 2021; 39 (4)
Over the hours of 05:00-09:00 UT on 8 June 2001, the extreme ultraviolet (EUV) instrument on board the IMAGE satellite observed a shoulder-like format......
期刊: ANNALES GEOPHYSICAE, 2021; 39 (3)
We report an attenuation of hiss wave intensity in the duskside of the outer plasmasphere in response to enhanced convection and a substorm based on V......
期刊: ANNALES GEOPHYSICAE, 2020; 38 (2)
In the emerging ionosphere-space-weather paradigm, investigating the dynamical properties of ionospheric plasma irregularities using advanced computat......
期刊: ANNALES GEOPHYSICAE, 2020; 38 (2)
In this work we analyze the ionograms obtained by the recent digisonde installed in Santa Maria (29.7 degrees S, 53.7 degrees W, dip angle = -37 degre......
期刊: ANNALES GEOPHYSICAE, 2020; 38 (2)
The stratification phenomenon is investigated using the simultaneous in situ plasma density measurements obtained by the Swarm satellites orbiting at ......
期刊: ANNALES GEOPHYSICAE, 2020; 38 (3)
During the storm recovery phase on 27 August 2018, the China Seismo-Electromagnetic Satellite (CSES) detected Pcl wave activities in both the Northern......
期刊: ANNALES GEOPHYSICAE, 2020; 38 (3)
During magnetically active periods the storm-time disturbance signal on the ground commonly develops an azimuthal asymmetry. Negative deflections of t......
期刊: ANNALES GEOPHYSICAE, 2020; 38 (4)
We present multi-period modulation of energetic electron flux observed by the BeiDa Imaging Electron Spectrometer (BD-IES) on board a Chinese navigati......
期刊: ANNALES GEOPHYSICAE, 2020; 38 (5)
Earthquakes may disturb the lower ionosphere through various coupling mechanisms during the seismogenic and coseismic periods. The VLF (very low-frequ......
期刊: ANNALES GEOPHYSICAE, 2020; 38 (5)
The differential code bias (DCB) of the Global Navigation Satellite System (GNSS) is an important error source in ionospheric modeling, which was gene......
期刊: ANNALES GEOPHYSICAE, 2020; 38 (6)
Predicting the maximum intensity of geomagnetic activity for an upcoming solar cycle is important in space weather service and for planning future spa......
期刊: ANNALES GEOPHYSICAE, 2020; 38 (1)
The present paper studies the perturbations in an equatorial ionization anomaly (EIA) region during the Southern Hemisphere (SH) sudden stratospheric ......