Results 11 to 20 of about 14,504 (230)

Traveling Ionospheric Disturbances [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1972
The T.I.D. of 13 May 1964, discussed by Theme appears to have had unusually high amplitude and would seem well suited for further investigation into its possible extension into the southern hemisphere as well as the possible presence of a simultaneous northbound wave.
S. M. Silverman, T. F. Tuan
openaire   +1 more source

Is there any difference in local time variation in ionospheric F2-layer disturbances between earthquake-induced and Q-disturbance events? [PDF]

open access: yesAnnales Geophysicae, 2015
Ionospheric anomalies before earthquakes have become the subject of one of the most intensive studies in the area of ionospheric variation. The ionosphere has a large class of disturbances under quiet geomagnetic conditions, i.e., quiet time ...
T. Xu   +4 more
doaj   +1 more source

Ionospheric response to the 2009 sudden stratospheric warming over the equatorial, low, and middle latitudes in the South American sector [PDF]

open access: yes, 2015
The present study investigates the ionospheric total electron content (TEC) and F-layer response in the Southern Hemisphere equatorial, low, and middle latitudes due to major sudden stratospheric warming (SSW) event, which took place during January ...
Coster, A. J.   +8 more
core   +2 more sources

Front Matter

open access: yesGeophysical Monograph Series, Page i-xiv., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
wiley  

+1 more source

Relation of Extreme Ionospheric Events with Geomagnetic and Meteorological Activity

open access: yesAtmosphere, 2022
This paper studies extreme ionospheric events and their relations with geomagnetic and meteorological activity. With the long observation series at the Irkutsk (52° N, 104° E) and Kaliningrad (54° N, 20° E) ionosondes we obtained the datasets of ...
Konstantin G. Ratovsky   +3 more
doaj   +1 more source

Geomagnetic disturbances on ground associated with particle precipitation during SC [PDF]

open access: yes, 2010
We have examined several cases of magnetosphere compression by solar wind pressure pulses using a set of instruments located in the noon sector of auroral zone. We have found that the increase in riometric absorption (sudden commencement absorption, SCA)
Honary, F.   +4 more
core   +3 more sources

Imaging ionospheric inhomogeneities using spaceborne synthetic aperture radar [PDF]

open access: yes, 2011
We present a technique and results of 2-D imaging of Faraday rotation and total electron content using spaceborne L band polarimetric synthetic aperture radar (PolSAR).
Chapman, B.   +4 more
core   +2 more sources

Global Ionospheric Disturbance Propagation and Vertical Ionospheric Oscillation Triggered by the 2022 Tonga Volcanic Eruption

open access: yesAtmosphere, 2022
The Tonga volcano erupted on 15 January 2022, at 04:15:45 UTC, which significantly influenced the atmosphere and space environment, at the same time, an unprecedented opportunity to monitor ionospheric anomalies is provided by its powerful eruption.
Qiaoli Kong   +7 more
doaj   +1 more source

WTEC: A new index to estimate the intensity of ionospheric disturbances

open access: yesResults in Physics, 2018
We propose a new index, WTEC, to estimate the level of ionospheric disturbances from Global Navigation Satellite Systems (GNSS) data. The index is calculated based on dual-frequency phase measurements from single GNSS receiver.
S.V. Voeykov   +4 more
doaj   +1 more source

Ionospheric effects of the solar flares of September 23, 1998 and July 29, 1999 as deduced from global GPS network data [PDF]

open access: yes, 2000
This paper presents data from first GPS measurements of global response of the ionosphere to solar flares of September 23, 1998 and July 29, 1999. The analysis used novel technology of a global detection of ionospheric effects from solar flares (GLOBDET)
A.T. Altyntsev   +27 more
core   +2 more sources

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