Results 141 to 150 of about 126,546 (328)
Microwave heating of the lower ionosphere [PDF]
, 1980 Changes in the properties of the lower ionosphere due to ohmic heating of the plasma by the solar power satellite (SPS) microwave power beam are considered.
Meltz, G., Nighan, W. L.
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Journal of Geophysical Research: Space Physics, Volume 130, Issue 5, May 2025.Abstract This comprehensive study focuses on interannual oscillations from 1 to 25 years in the F, E, and D region ionosphere. By leveraging longterm (1960–2018) continuous ground‐based ionosonde and phase height measurements in northern Germany, we have identified the peak periods and temporal variations of these oscillations using advanced analysis ...
Mani Sivakandan +5 more
wiley +1 more source
The dynamics of the Venus ionosphere [PDF]
Data from the Pioneer-Venus orbiter has demonstrated the importance of understanding ion dynamics in the Venus ionosphere. The analysis of the data has shown that during solar maximum the topside Venus ionosphere in the dark hemisphere is generated ...
Miller, K. L.
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Imaging of the equatorial ionosphere
Annals of Geophysics, 2009 The equatorial anomaly is the dominant structure in free electron concentration in the tropical ionosphere. Due to its edges (crests) which are characterised by steep, latitudinal gradients in TEC and are temporally and spatially variable, it is one of the ionospheric regions most difficult to image with inversion methods.
Materassi M, Mitchell CN
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Journal of Geophysical Research: Space Physics, Volume 130, Issue 5, May 2025.Abstract In the present study we investigate the response of the dayside ground magnetic field to the sequence of interplanetary magnetic field (IMF) BY changes during the May 2024 geomagnetic storm. We pay particular attention to its extraordinarily large (>120 nT) and abrupt flip, and use GOES‐18 (G18) magnetic field measurements in the dayside ...
S. Ohtani +7 more
wiley +1 more source
A Study of "Spread-F" Ionospheric Echoes at Night at Brisbane. IV. Range Spreading [PDF]
, 1958 HC Webster
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Influences of the state of ionospheric background on ionospheric heating effects
Annals of Geophysics, 2014 According to the well-performed ionospheric heating experiments at Arecibo in the low latitudes as well as at Tromsø in the high latitudes, the large-scale modification effects are simulated under an assumption of equivalent conditions, i.e., with the same effective radiative power and the same ratio of the heating frequency fHF to the critical ...
Che Hai-Qin +6 more
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Journal of Geophysical Research: Solid Earth, Volume 130, Issue 5, May 2025.Abstract Opposite‐direction oceanic wave interactions at the ocean surface generate microseisms between 0.1 and ∼ ${\sim} $0.5 Hz, known as secondary microseisms (SM). SM recordings aid in imaging Earth's crust, but they also impede monitoring seismic signals due to tectonic activities.
Zongbo Xu +3 more
wiley +1 more source
Journal of Geophysical Research: Planets, Volume 130, Issue 5, May 2025.Abstract Mars, without a global dipole magnetic field, has its atmosphere directly exposed to the impinging solar wind, producing a complex interaction due to the remnant crustal magnetic fields, which, especially in the southern hemisphere, have spatially varying strengths and inclinations. “Mini‐magnetospheres” generated over the strong crustal field
Dikshita Meggi +10 more
wiley +1 more source