Results 21 to 30 of about 451,064 (205)

Traveling Ionospheric Disturbances [PDF]

The 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
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A LOFAR observation of ionospheric scintillation from two simultaneous travelling ionospheric disturbances [PDF]

Journal of Space Weather and Space Climate, 2020
This paper presents the results from one of the first observations of ionospheric scintillation taken using the Low-Frequency Array (LOFAR). The observation was of the strong natural radio source Cassiopeia A, taken overnight on 18–19 August 2013, and exhibited moderately strong scattering effects in dynamic spectra of intensity received across an ...
Richard A. Fallows, Biagio Forte, Ivan Astin, Tom Allbrook, Alex Arnold, Alan Wood, Gareth Dorrian, Maaijke Mevius, Hanna Rothkaehl, Barbara Matyjasiak, Andrzej Krankowski, James M. Anderson, Ashish Asgekar, I. Max Avruch, Mark Bentum, Mario M. Bisi, Harvey R. Butcher, Benedetta Ciardi, Bartosz Dabrowski, Sieds Damstra, Francesco de Gasperin, Sven Duscha, Jochen Eislöffel, Thomas M.O. Franzen, Michael A. Garrett, Jean-Matthias Grießmeier, André W. Gunst, Matthias Hoeft, Jörg R. Hörandel, Marco Iacobelli, Huib T. Intema, Leon V.E. Koopmans, Peter Maat, Gottfried Mann, Anna Nelles, Harm Paas, Vishambhar N. Pandey, Wolfgang Reich, Antonia Rowlinson, Mark Ruiter, Dominik J. Schwarz, Maciej Serylak, Aleksander Shulevski, Oleg M. Smirnov, Marian Soida, Matthias Steinmetz, Satyendra Thoudam, M. Carmen Toribio, Arnold van Ardenne, Ilse M. van Bemmel, Matthijs H.D. van der Wiel, Michiel P. van Haarlem, René C. Vermeulen, Christian Vocks, Ralph A.M.J. Wijers, Olaf Wucknitz, Philippe Zarka, Pietro Zucca   +57 more
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The Persistent Ionospheric Responses Over Japan After the Impact of the 2011 Tohoku Earthquake

Space Weather, 2020
In this study, we report the persistent impacts of the 2011 Tohoku earthquake/tsunami on the ionosphere using the ground‐based Global Navigation Satellite System and FORMOSAT‐3/COSMIC total electron content.
Min‐Yang Chou, Iurii Cherniak, Charles C.H. Lin, N.M. Pedatella   +3 more
doaj   +1 more source

Traveling Ionospheric Disturbances at Mars

Geophysical Research Letters, 2019
AbstractWe report the first extraterrestrial observation of traveling ionospheric disturbances (TIDs) in the ionosphere of Mars (below ≈160 km) by NASA's Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft. TIDs are ionospheric waves manifesting as an oscillation in density, velocity, and composition of ionospheric plasma.
Glyn Collinson, James McFadden, David Mitchell, Joseph Grebowsky, Mehdi Benna, Jared Espley, Bruce Jakosky   +6 more
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Rapid‐run ionosonde observations of traveling ionospheric disturbances in the auroral ionosphere [PDF]

Journal of Geophysical Research: Space Physics, 2013
AbstractSince 2007, the Sodankylä Geophysical Observatory routinely performs vertical ionosphere soundings once per minute, using a frequency‐modulated continuous‐wave chirp at the rate of 500 kHz/s from 500 kHz to 16 MHz. We used these data to study traveling ionospheric disturbances (TIDs) during 10–16 local time.
Kozlovski Alexandre, Ulich Thomas, Turunen Tauno   +2 more
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A method for real-time identification and tracking of traveling ionospheric disturbances using ionosonde data: first results [PDF]

, 2020
Traveling Ionospheric Disturbances (TIDs) are wave-like propagating irregularities that alter the electron density environment and play an important role spreading radio signals propagating through the ionosphere. A method combining spectral analysis and
Altadill, David, Dalia Buresova, Segarra, Antoni, Juan Zornoza, José Miguel, José Miguel Juan, Blanch Llosa, Estefania, Paznukhov, Vadym V., Vadym V. Paznukhov, Bodo W. Reinisch, Galkin, Ivan, David Altadill, Estefania Blanch, Buresova, Dalia, Altadill Felip, David, Reinisch, Bodo W., Paznuhkov, Vadym V., Blanch, Estefania, Belehaki, Anna, Antoni Segarra, Ivan Galkin, Anna Belehaki   +20 more
core   +1 more source

Correction to: Medium-scale traveling ionospheric disturbances by three-dimensional ionospheric GPS tomography

Earth, Planets and Space, 2020
An amendment to this paper has been published and can be accessed via the original article.
C. H. Chen, A. Saito, C. H. Lin, M. Yamamoto, S. Suzuki, G. K. Seemala   +5 more
doaj   +1 more source

Traveling Ionospheric Disturbances and Ionospheric Perturbations Associated With Solar Flares in September 2017 [PDF]

Journal of Geophysical Research: Space Physics, 2019
AbstractSolar flares provide strong impulsive radiation and energy injection to the sunlit upper atmosphere. The impact on the ionosphere is immense in spatial scale, and therefore, it is not immediately evident if dramatically elevated neutral heating can lead to excitation of acoustic gravity waves.
Shun‐Rong Zhang, Anthea J. Coster, Philip J. Erickson, Larisa P. Goncharenko, William Rideout, Juha Vierinen   +5 more
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Magnetic Field Signatures of Tropospheric and Thermospheric Lamb Modes Triggered by the 15 January 2022 Tonga Volcanic Eruption

Geophysical Research Letters, 2023
Intense eruptions of the Tonga volcano activated prominent traveling atmospheric disturbances (TADs) at 04:05UT on 15 January 2022. Himawari‐8 satellite images depict that TADs of the tropospheric Lamb wavefront propagate with a speed of 315 m/s and ...
Jann‐Yenq Liu, Tzu‐Hsun Kao, Tien‐Chi Liu, Bor‐Shouh Huang, Po‐Han Lee, Yang‐Yi Sun, Chieh‐Hung Chen, Katsumi Hattori, Po‐Han Liao, I.‐Te Lee, Ching‐Lun Su, Chuen‐Teyr Terng, Treng‐Shi Huang   +12 more
doaj   +1 more source

Travelling Ionospheric Disturbances in the F Region [PDF]

Australian Journal of Physics, 1958
Observations of the horizontal movements of travelling ionospheric disturbances recorded on a single radio frequency from April 1948 to March 1957 are analysed for seasonal and diurnal variations of occurrence and of direction and speed of travel. Recording was mainly in daylight hours but some limited night results are included.
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