Results 21 to 30 of about 4,627 (227)

Dynamical Complexity of the 2015 St. Patrick’s Day Magnetic Storm at Swarm Altitudes Using Entropy Measures

Entropy, 2020
The continuously expanding toolbox of nonlinear time series analysis techniques has recently highlighted the importance of dynamical complexity to understand the behavior of the complex solar wind–magnetosphere–ionosphere–thermosphere coupling system and
Constantinos Papadimitriou, Georgios Balasis, Adamantia Zoe Boutsi, Ioannis A. Daglis, Omiros Giannakis, Anastasios Anastasiadis, Paola De Michelis, Giuseppe Consolini   +7 more
doaj   +1 more source

Modeling the Topside Ionosphere Effective Scale Height through In Situ Electron Density Observations by Low-Earth-Orbit Satellites

Universe, 2023
In this work, we aim to characterize the effective scale height at the ionosphere F2-layer peak (H0) by using in situ electron density (Ne) observations by Langmuir Probes (LPs) onboard the China Seismo-Electromagnetic Satellite (CSES—01).
Alessio Pignalberi, Michael Pezzopane, Tommaso Alberti, Igino Coco, Giuseppe Consolini, Giulia D’Angelo, Paola De Michelis, Fabio Giannattasio, Bruno Nava, Mirko Piersanti, Roberta Tozzi   +10 more
doaj   +1 more source

Yearly variations in the low-latitude topside ionosphere [PDF]

Annales Geophysicae, 2000
Observations made by the Hinotori satellite have been analysed to determine the yearly variations of the electron density and electron temperature in the low-latitude topside ionosphere.
G. J. Bailey, G. J. Bailey, G. J. Bailey, Y. Z. Su, K.-I. Oyama   +4 more
doaj   +1 more source

Plasma perturbations HF‐induced in the topside ionosphere [PDF]

Journal of Geophysical Research: Space Physics, 2016
AbstractThree plasma perturbations induced by SURA HF (high‐frequency) heating have been selected and analyzed in detail with the DEMETER satellite observing data by instruments of Langmuir probe and ion analyzer. Some common features are revealed, such as (1) electron density and electron temperature both increased during the heating period; (2) both ...
Zhang X., Frolov V., Zhou C., Zhao S., Ruzhin Y., Shen X., Zhima Z., Liu J.   +7 more
openaire   +3 more sources

Bottom-type scattering layers and equatorial spread F [PDF]

Annales Geophysicae, 2004
Jicamarca radar observations of bottom-type coherent scattering layers in the post-sunset bottomside F-region ionosphere are presented and analyzed.
D. L. Hysell, J. Chun, J. L. Chau
doaj   +1 more source

Interhemispheric ionosphere-plasmasphere system shows a high sensitivity to the exospheric neutral hydrogen density: a caution of the global reference atmospheric model hydrogen density

Frontiers in Astronomy and Space Sciences, 2023
This study explores the impact of the exosphere hydrogen (H) density on the ionosphere-plasmasphere system using a model whose key inputs are constrained by ionosphere observations at both ends of the magnetic field line with an L-value of 1.75 in the ...
Dmytro Kotov, Phil G. Richards, Maryna Reznychenko, Oleksandr Bogomaz, Oleksandr Bogomaz, Vladimír Truhlík, Susan Nossal, Edwin Mierkiewicz, Taras Zhivolup, Igor Domnin, Yoshizumi Miyoshi, Fuminori Tsuchiya, Atsushi Kumamoto, Yoshiya Kasahara, Masahiro Kitahara, Satoko Nakamura, Ayako Matsuoka, Iku Shinohara, Marc Hairston   +18 more
doaj   +1 more source

Evaluation of E Layer Dominated Ionosphere Events Using COSMIC/FORMOSAT-3 and CHAMP Ionospheric Radio Occultation Data [PDF]

, 2020
At certain geographic locations, especially in the polar regions, the ionization of the ionospheric E layer can dominate over that of the F2 layer. The associated electron density profiles show their ionization maximum at E layer heights between 80 and ...
Hoque, Mohammed M., Jakowski, Norbert, Kamal, Sumon, Wickert, Jens   +3 more
core   +2 more sources

Topside ionospheric response to solar EUV variability [PDF]

Journal of Geophysical Research: Space Physics, 2016
Abstract We present an analysis of 23 years of thermal plasma measurements in the topside ionosphere from the Defense Meteorological Satellite Program (DMSP) spacecraft. The H + /O + ratio and density vary dramatically with the solar ...
Phillip C. Anderson, Jessica M. Hawkins
openaire   +1 more source

Comparison of analytical functions used to describe topside electron density profiles with satellite data

Annals of Geophysics, 2005
Electron density models of the ionosphere use different analytical formulations for the electron density vertical profile in the topside. The present paper compares some single-layer topside analytical descriptions (Chapman, Epstein, modified ...
S. M. Radicella, B. Nava, P. Coïsson, C. Fonda   +3 more
doaj   +1 more source

Comparisons of Differential Code Bias (DCB) Estimates and Low-Earth-Orbit (LEO)-Topside Ionosphere Extraction Based on Two Different Topside Ionosphere Processing Methods

Remote Sensing
Global navigation satellite system (GNSS) differential code bias (DCB) and topside ionosphere vertical electron content (VEC) can be estimated using onboard data from low-earth-orbit (LEO) satellites. These satellites provide the potential to make up for
Mingming Liu, Yunbin Yuan, Jikun Ou, Bingfeng Tan   +3 more
doaj   +1 more source