Results 71 to 80 of about 826 (151)

A Survey of Atmospheric Gravity Waves Observed by GOLD During Quiet to Moderate Solar and Geomagnetic Activity

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract Atmospheric gravity waves (GWs) are believed to transport energy and momentum between different regions of the atmosphere. Historically, observations of these waves from both ground and space have been relatively abundant at altitudes up to the lower thermosphere, and somewhat less abundant in the upper thermosphere and F‐region ionosphere ...
Scott L. England, Shun‐Rong Zhang, Scott Evans, Richard W. Eastes   +3 more
wiley   +1 more source

Study on Ionospheric Depletion and Traveling Ionospheric Disturbances Induced by Rocket Launches Using Multi-Source GNSS Observations and the MRMIT Method

Remote Sensing
Rocket launches constitute a major anthropogenic source of disturbance in the near-Earth space environment, inducing significant ionospheric perturbations through both chemical and dynamic mechanisms.
Jianghe Chen, Pan Xiong, Ming Ou, Ting Zhang, Xiaoran Zhang, Yuqi Lin, Jiahao Zhu   +6 more
doaj   +1 more source

Midlatitude postsunset plasma bubbles observed over Europe during intense storms in April 2000 and 2001 [PDF]

, 2017
Plasma bubbles are prevalent features of the equatorial/low-latitude ionosphere which are seldom observed at middle and high latitudes. Understanding the influence of geomagnetic storms on plasma bubbles' migration to higher latitudes is an important ...
Habarulema, John Bosco, Hernández Pajares, Manuel, Katamzi Joseph, Zama Thobeka   +2 more
core   +2 more sources

Climatology of Medium‐Scale Traveling Ionospheric Disturbances Over Continental US Using GNSS TEC From 2012 to 2023

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract Medium‐Scale Traveling Ionospheric Disturbances (MSTIDs) have long been a subject of interest in ionospheric research. However, their spatiotemporal variability across regions, local times, seasons, and solar cycles is very complicated and remains not well established.
Jing Liu, Shun‐Rong Zhang, Anthea J. Coster, Philip J. Erickson, Hanli Liu   +4 more
wiley   +1 more source

IonKit-NH: A MATLAB-based toolkit for ionospheric detection of earthquake, tsunami and volcanic eruption

Earthquake Research Advances
In recent years, GNSS-derived total electron content (TEC) measurements have emerged as an effective method for detecting natural hazards through their ionospheric manifestations.
Long Tang
doaj   +1 more source

Measurement of the Characteristics of TIDs Using Small and Regional Networks of GPS Receivers during the Campaign of 17–30 July of 2008

International Journal of Geophysics, 2012
This scientific report presents the results of a dedicated experiment that was conducted within the framework of the Low-latitude ionospheric Sensor Network (LISN) observatory to measure the characteristics of medium-scale (hundreds of km) Traveling ...
Cesar E. Valladares, Matthew A. Hei
doaj   +1 more source

When Plasma Streams Tie up Equatorial Plasma Irregularities with Auroral Ones

Space Weather, 2020
We present a new pattern of storm‐induced ionospheric irregularities behavior at midlatitudes—poleward‐streaming plasma density depletions. Under disturbed conditions, they appear at North America low latitudes as a part of extended postsunset equatorial
Irina Zakharenkova, Iurii Cherniak
doaj   +1 more source

Automated Detection and Characterization of Wave Structures Obtained From GNSS Measurements

Earth and Space Science, 2023
A simple technique designed to automatically identify and characterize wave structures from total electron content (TEC) data obtained from Global Navigation Satellite System (GNSS) satellites and multiple receiver stations is presented. We used 11 years
Olusegun Jonah, Pablo Reyes, Leslie Lamarche, Anthony vanEyken   +3 more
doaj   +1 more source

The 74MHz System on the Very Large Array

, 2007
The Naval Research Laboratory and the National Radio Astronomy Observatory completed implementation of a low frequency capability on the VLA at 73.8 MHz in 1998.
A. S. Cohen, B. Hicks, Baars J. W. M., Braude S. Ya., Brentjens M. A., Cornwell T. J., D. Katz, Duim R. M., E. W. Greisen, Erickson W. C., Falcke H., H. R. Schmitt, Jacobson A. R., Jagers W. J., Jagers W. J., Jones L. R., Kassim N. E., Kronberg P. P., Kuhr H., Leahy J. P., Leahy J. P., Leahy J. P., McCready L. L., N. E. Kassim, Napier P. J., Pawsey J. L., Pedlar A., R. A. Perley, Rees N., Roger R. S., Ryle M., Ryle M., Ryle M., Shkolvsky I. S., Slee O. B., Slee O. B., Slee O. B., Subramanian K. R., Swarup G., T. Joseph W. Lazio, Taylor G. B., Thomasson P., W. C. Erickson, W. D. Cotton, Yates K. W.   +44 more
core   +1 more source

Role of Large‐Scale Traveling Ionospheric Disturbances in the Positive Storm Phase Observed by the Millstone Hill Radar and GNSS TEC Measurements

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract A moderate geomagnetic storm was driven by high‐speed solar wind stream on 14 March 2016. We show that large‐scale traveling ionospheric disturbances (LSTIDs) played a significant role in producing the ionospheric storm positive phase at mid‐latitudes in the North American sector.
G. P. Geethakumari, A. T. Aikio, L. Cai, H. Vanhamäki, I. I. Virtanen, A. Coster, A. Maute, A. Marchaudon, P.‐L. Blelly   +8 more
wiley   +1 more source