Results 21 to 30 of about 197,251 (258)
Space Weather, 2021 The Norwegian Mapping Authority operates a network real time kinematic (RTK) system called CPOS, a positioning service providing centimeter level accuracy aimed at commercial users, for example, in civil engineering, excavation, and surveying.
A. Follestad +3 more
semanticscholar +1 more source
Diffusion spreading of middle-latitude ionospheric plasma irregularities [PDF]
Annales Geophysicae, 1995 In contrast to the way that the spreading of irregularities in a plasma is usually considered, the diffusion spreading of irregularities stretched along the geomagnetic field B is examined using a three-dimensional rigorous numerical model of quasi ...
N. Blaunstein
doaj +1 more source
Nonlinear Simulation of Ionospheric Irregularities at Mars
, 2021 Motivated by the observations and linear theory analysis of ionospheric irregularities at Mars, we performed numerical simulations of the nonlinear evolution of the electromagnetic gradient drift instability in the Martian ionospheric dynamo region.
Chunhua Jiang +4 more
semanticscholar +1 more source
Simultaneous ground-based and in situ Swarm observations of equatorial F-region irregularities over Jicamarca [PDF]
Annales Geophysicae, 2020 Ionospheric irregularities are a common phenomenon in the low-latitude ionosphere. They can be seen in situ as depletions of plasma density, radar plasma plumes, or ionogram spread F by ionosondes.
S. Aol, S. Buchert, E. Jurua, M. Milla
doaj +1 more source
Imaging ionospheric inhomogeneities using spaceborne synthetic aperture radar [PDF]
, 2011 We present a technique and results of 2-D imaging of Faraday rotation and total electron content using spaceborne L band polarimetric synthetic aperture radar (PolSAR).
Chapman, B. +4 more
core +2 more sources
Reviews of Geophysics, 1980 Extensive experimental and theoretical research has been performed in the last decade to study ionospheric irregularities. These studies have shown that plasma instabilities play a major role in the generation of the irregularities. In this work we describe in detail the recent experimental studies of the E and F region irregularities and also the ...
Fejer, B. G., Kelley, M. C.
openaire +3 more sources
Remote Sensing, 2021 This study presents observations of nighttime spread F/ionospheric irregularities and spread Es at low and middle latitudes in the South East Asia longitude of China sectors during the recovery phase of the 7–9 September 2017 geomagnetic storm.
Lehui Wei +7 more
doaj +1 more source
Inhomogeneous structure of the high-latitude ionosphere as observed at Norilsk [PDF]
, 2001 In March and August/September 1995, February 1996, and in March-April 1998, observations of the inhomogeneous structure of the high-latitude ionosphere were carried out at Norilsk (geomagnetic latitude and longitude are 64.2 N and 160.4 E, and L=5.2 ...
Lipko, Yu. V.
core +4 more sources
The Persistent Ionospheric Responses Over Japan After the Impact of the 2011 Tohoku Earthquake
Space Weather, 2020 In this study, we report the persistent impacts of the 2011 Tohoku earthquake/tsunami on the ionosphere using the ground‐based Global Navigation Satellite System and FORMOSAT‐3/COSMIC total electron content.
Min‐Yang Chou +3 more
doaj +1 more source
Spatiotemporal evolution of radio wave pump-induced ionospheric phenomena near the fourth electron gyroharmonic [PDF]
, 2007 On 12 November 2001, the European Incoherent Scatter (EISCAT) high-frequency (HF) radio wave transmitter facility, operating in O-mode at 5.423 MHz with 550 MW effective radiated power, produced artificial optical rings which appeared immediately at ...
Ashrafi, M. +3 more
core +1 more source