Results 51 to 60 of about 126,100 (317)
Daytime F2-layer negative storm effect: what is the difference between storm-induced and Q-disturbance events? [PDF]
Annales Geophysicae, 2007 Negative F2-layer storms related to geomagnetic activity and quiet-time disturbances (Q-disturbances) belong to different classes of events and exhibit different morphology.
A. V. Mikhailov +2 more
doaj +1 more source
The Effects of Solar Wind Dynamic Pressure on the Structure of the Topside Ionosphere of Mars
, 2019 We use Mars Atmosphere and Volatile EvolutioN observations of the upstream solar wind, and Mars Express observations of ionospheric electron densities and magnetic fields, to study how the topside ionosphere ($>$ 320 km) of Mars is affected by variations
Chu, F. +5 more
core +1 more source
Ionospheric conductivity effects on electrostatic field penetration into the ionosphere [PDF]
Natural Hazards and Earth System Sciences, 2008 Abstract. The classic approach to calculate the electrostatic field penetration, from the Earth's surface into the ionosphere, is to consider the following equation ∇·(σ·∇Φ)=0 where σ and Φ are the electric conductivity and the potential of the electric field, respectively.
Valery V. Denisenko +10 more
openaire +3 more sources
Journal of the Royal Anthropological Institute, EarlyView.Space activities in subarctic Sweden are predicated on older infrastructures of underground resource extraction. The ongoing expansion of the country's rocket launch site outside Kiruna relies on the Swedish state's historical construction of the region as a resource frontier.
Chakad Ojani
wiley +1 more source
AtmosphereThis paper examines the response of the ionosphere to the impact of two moderate geomagnetic storms observed on January 17 and 26–27, 2013, under conditions of strong sudden stratospheric warming.
Galina Gordiyenko +3 more
doaj +1 more source
VARIATIONS OF IONOSPHERIC PARAMETERS OVER ALMATY (KAZAKHSTAN) IN 1999–2013
Solar-Terrestrial Physics, 2019 The paper presents the results of a study of the behavior of ionospheric parameters of the total electron content, I(t), and electron density in the maximum F2 layer, Nm, over Almaty (Kazakhstan) [43.25° N; 76.92° E] in 1999–2013. The time interval under
Mukasheva S.N. +2 more
doaj +1 more source
Remote SensingIn the current work, authors reviewed the latest research results in landslide susceptibility mapping (LSM) using artificial intelligence (AI) methods.
Muratbek Kudaibergenov +7 more
doaj +1 more source
Magnetic location of a possible earthquake epicentre area: a mathematical model
Geomatics, Natural Hazards & Risk, 2016 We study one of the problems of the theory of seismo-electromagnetic methods of earthquake prediction, namely, the physical nature of magnetic location of a future epicentre.
O.B. Novik +3 more
doaj +1 more source
Solar illumination control of ionospheric outflow above polar cap arcs [PDF]
, 2016 We measure the flux density, composition, and energy of outflowing ions above the polar cap, accelerated by quasi-static electric fields parallel to the magnetic field and associated with polar cap arcs, using Cluster. Mapping the spacecraft position to its ionospheric foot point, we analyze the dependence of these parameters on the solar zenith angle (
arxiv +1 more source
The effect of the ionosphere on ultra-low frequency radio-interferometric observations [PDF]
A&A 615, A179 (2018), 2018 The ionosphere is the main driver of a series of systematic effects that limit our ability to explore the low frequency (<1 GHz) sky with radio interferometers. Its effects become increasingly important towards lower frequencies and are particularly hard to calibrate in the low signal-to-noise ratio regime in which low-frequency telescopes operate.
arxiv +1 more source