Results 101 to 110 of about 34,661 (210)

Improving the Quality of Magnetograms Using Data from Several Magnetic Observatories

open access: yesApplied Sciences
The formation of international networks of magnetic observatories has provided new opportunities for monitoring geomagnetic disturbances and solving problems related to space weather.
Ivan Vassilyev   +5 more
doaj   +1 more source

Seismogenic Effects in Variation of the ULF/VLF Emission in a Complex Study of the Lithosphere–Ionosphere Coupling Before an M6.1 Earthquake in the Region of Northern Tien Shan

open access: yesGeosciences
A complex study was performed of the disturbances in geophysics parameters that were observed during a short-term period of earthquake preparation. On 4 March 2024, an M6.1 earthquake (N 42.93, E 76.966) occurred with the epicenter 12.2 km apart from the
Nazyf Salikhov   +5 more
doaj   +1 more source

Modeling the topside ionosphere by means of electron density values as recorded by the Swarm constellation [PDF]

open access: yes, 2017
The topside part of the ionosphere lies above the ionospheric F2 layer peak and extends up to the plasmasphere. Since it contains a considerable part of the ionospheric plasma, its modeling is important for telecommunication’s purposes.
Rolando Rizzi   +2 more
core  

Estimation and correction of scintillation effects on spaceborne P-band SAR images

open access: yes, 2012
A correction method for distortions induced by ionospheric scintillation effects on P-band quad-pol synthetic aperture radar (SAR) data acquired in polar and high latitude regions is presented.
Konstantinos P. Papathanassiou   +8 more
core   +1 more source

Ionospheric Threat Model Assessment

open access: yes, 2009
This paper presents the first results of a German study (ITMA) that attempts to validate the GBAS CAT I ionosphere threat space that was developed for US CONUS.
Mayer, Christoph   +2 more
core  

Coupling of the solar wind, magnetosphere and ionosphere by MHD waves

open access: yes, 2012
The solar wind, magnetosphere and ionosphere are coupled by magnetohydrodynamic waves, and this gives rise to new and often unexpected behaviours that cannot be produced by a single, isolated part of the system.
Russell, Alexander J. B.
core  

Temporal variations of geoid heights over Kazakhstan from GRACE–FO data and their relation with hydrological changes in the Caspian Sea and seismic activity

open access: yesFrontiers in Earth Science
IntroductionWe quantify temporal variations of geoid heights (ΔN) across Kazakhstan during 2019–2024 using satellite gravimetry, and relate these changes to recent extreme hydrological and seismic events.MethodsMonthly ΔN fields were derived from GRACE ...
Daniya Shoganbekova   +7 more
doaj   +1 more source

Dependence of the open-closed field line boundary in Saturn's ionosphere on both the IMF and solar wind dynamic pressure : comparison with the UV auroral oval observed by the HST [PDF]

open access: yes, 2008
We model the open magnetic field region in Saturn's southern polar ionosphere during two compression regions observed by the Cassini spacecraft upstream of Saturn in January 2004, and compare these with the auroral ovals observed simultaneously in ...
Badman, S. V.   +9 more
core  

Improved Ionospheric Correction for Dual Frequency and Differential GPS Positioning Methods [PDF]

open access: yes, 2007
A new three dimensional (3-D) electron density model has been developed that can give a very accurate description of the real ionospheric variation; latitudinally,longitudinally and altitudinally.
Nagarajoo, Karthigesu
core  

A GBAS Testbed to Support New Monitoring Algorithms Development for CAT III Precision Approach

open access: yes, 2010
The development of new monitoring algorithms needs to have access to a platform that offers flexibility, operational evaluation facilities, test and validation capacities.
Wilken, Volker   +7 more
core  

Home - About - Disclaimer - Privacy