Results 11 to 20 of about 588 (83)

Multi-Frequency SuperDARN HF Radar Observations of the Ionospheric Response to the October 2023 Annular Solar Eclipse [PDF]

Geophysical Research Letters, Volume 51, Issue 24, 28 December 2024.
An annular solar eclipse was visible on 14 October 2023 from 15:00–21:00 UT as its path traveled across North, Central, and South America. In this letter, we present the first multi‐frequency Super Dual Auroral Radar Network (SuperDARN) observations of ...
Kunduri, B. S. R., Shepherd, S. G., Themens, D. R., Thomas, E. G.   +3 more
core   +2 more sources

Features of backscatter ionospheric sounding as studied with a chirp ionosonde

Solar-Terrestrial Physics, 2017
We present the results of the studies of backscatter ionospheric sounding (BS) on the basis of a multipurpose chirp ionosonde developed in ISTP SB RAS. We analyze BS experimental data obtained during different seasons from 2005 to 2009.
Ponomarchuk S.N., Kurkin V.I., Penzin M.S.   +2 more
doaj   +1 more source

HF radar detection of infrasonic waves generated in the ionosphere by the 28 March 2005 Sumatra earthquake [PDF]

, 2014
International audienceSurface waves generated by earthquakes create atmospheric waves detectable in the ionosphere using radio waves techniques: i.e., HF Doppler sounding, GPS and altimeter TEC measurements, as well as radar measurements.
Bourdillon, Alain, Molinié, Jean-Philippe, Occhipinti, Giovanni, Rannou, Véronique   +3 more
core   +3 more sources

Geomagnetism and Aeronomy activities in Italy during IGY, 1957/58 [PDF]

, 2009
In 2007 several events were organized to celebrate the fiftieth anniversary of the International Geophysical Year (IGY, 1957-1958). The celebrations will last until 2009 and are taking place within different contexts: the International Polar Year (IPY ...
Alfonsi, Lu., Meloni, A.
core   +1 more source

Ionospheric effects during first 2 hours after the Chelyabinsk meteorite impact [PDF]

, 2013
This paper presents the analysis of ionospheric effects in the region close to the Chelyabinsk meteorite explosion at 03:20UT 2013 February 15 from the Institute of Solar-Terrestrial Physics of Siberian Branch of Russian Academy of Sciences (ISTP SB RAS)
Berngardt, O. I., Grigorieva, S. A., Kurkin, V. I., Kusonski, O. A., Zherebtsov, G. A.   +4 more
core  

The science case for the EISCAT_3D radar [PDF]

, 2015
The EISCAT (European Incoherent SCATer) Scientific Association has provided versatile incoherent scatter (IS) radar facilities on the mainland of northern Scandinavia (the EISCAT UHF and VHF radar systems) and on Svalbard (the electronically scanning ...
Aikio, Anita, Alfonsi, Lucilla, Belova, Evgenia, Buchert, Stephan, Clilverd, Mark, Engler, Norbert, Gustavsson, Björn, Heinselman, Craig, Kero, Johan, Kosch, Michael, Lamy, Hervé, Leyser, Thomas, Mccrea, Ian, Ogawa, Yasunobu, Oksavik, Kjellmar, Pellinen-wannberg, Asta, Pitout, Frederic, Rapp, Markus, Stanislawska, Iwona, Vierinen, Juha   +19 more
core   +7 more sources

Monitoring Flood Inundation Dynamics From Space

Reviews of Geophysics, Volume 64, Issue 1, March 2026.
Abstract With the increasing intensity and frequency of flood events worldwide, the need for accurate and timely inundation mapping has never been more critical. Large‐scale flood extent estimations are vital for coordinating effective disaster response, facilitating recovery, and building future resilience.
C. Campo, P. Tamagnone, S. Choy, T. D. Tran, G. J.‐P. Schumann, Y. Kuleshov   +5 more
wiley   +1 more source

Backscatter Inversion in Spherically Asymmetric Ionosphere [PDF]

, 1979
It is Well Known that Various Diurnal and Morphological Features of the Ionosphere Reveal Substantial Departures from the Normally Simplified Assumption of Spherical Symmetry at Certain Times of the Day or at Certain Geographic Locations.
DuBroff, R. (Richard) E., Rao, N. Narayana, Yeh, K. C.   +2 more
core   +2 more sources

Characterization of a Lava Plain NW of Ascraeus Mons, Mars, Through Surface Morphometric Analyses and SHARAD Subsurface Detections

Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract The Martian lava plains are characterized by their extensive, low‐relief surfaces, which are the result of numerous basaltic eruptions and feature a variety of volcanic landforms, including vents, cones, pits, and skylights. The combination of these features and impact craters yields a significant understanding of the planet's geological past ...
G. Nodjoumi, S. E. Lauro, M. Valiante, E. Luzzi, A. P. Rossi   +4 more
wiley   +1 more source

Forecasting Equatorial Plasma Bubbles From Precursor TEC Signatures Observed by C/NOFS

Space Weather, Volume 24, Issue 1, January 2026.
Abstract This study investigates the potential of localized total electron content (TEC) perturbation measurements, possibly associated with bottomside upwelling of the F‐layer, as precursors for forecasting ionospheric plasma irregularities, particularly the equatorial plasma bubbles (EPBs).
S. K. Das, C. Stolle, Y. Yamazaki, T. Yokoyama, M. Yamamoto, S. Perwitasari   +5 more
wiley   +1 more source