A LOFAR observation of ionospheric scintillation from two simultaneous travelling ionospheric disturbances

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Fältnamn	Indikatorer	Metadata
000		09624naa a2201105 4500
001		oai:research.chalmers.se:8ba2e12d-a179-4eea-b34f-1d67f9929794
003		SwePub
008		200409s2020 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://research.chalmers.se/publication/5181732 URI
024	7	a https://doi.org/10.1051/swsc/20200102 DOI
024	7	a https://research.chalmers.se/publication/5163702 URI
040		a (SwePub)cth
041		a engb eng
042		9 SwePub
072	7	a art2 swepub-publicationtype
072	7	a ref2 swepub-contenttype
100	1	a Fallows, Richard A.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
245	1 0	a A LOFAR observation of ionospheric scintillation from two simultaneous travelling ionospheric disturbances
264		c 2020-03-20
264	1	b EDP Sciences,c 2020
338		a electronic2 rdacarrier
520		a 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 observing bandwidth of 10-80 MHz. Delay-Doppler spectra (the 2-D FFT of the dynamic spectrum) from the first hour of observation showed two discrete parabolic arcs, one with a steep curvature and the other shallow, which can be used to provide estimates of the distance to, and velocity of, the scattering plasma. A cross-correlation analysis of data received by the dense array of stations in the LOFAR "core" reveals two different velocities in the scintillation pattern: a primary velocity of similar to 20-40 ms(-1) with a north-west to south-east direction, associated with the steep parabolic arc and a scattering altitude in the F-region or higher, and a secondary velocity of similar to 110 ms(-1) with a north-east to south-west direction, associated with the shallow arc and a scattering altitude in the D-region. Geomagnetic activity was low in the mid-latitudes at the time, but a weak sub-storm at high latitudes reached its peak at the start of the observation. An analysis of Global Navigation Satellite Systems (GNSS) and ionosonde data from the time reveals a larger-scale travelling ionospheric disturbance (TID), possibly the result of the high-latitude activity, travelling in the north-west to south-east direction, and, simultaneously, a smaller-scale TID travelling in a north-east to south-west direction, which could be associated with atmospheric gravity wave activity. The LOFAR observation shows scattering from both TIDs, at different altitudes and propagating in different directions. To the best of our knowledge this is the first time that such a phenomenon has been reported.
650	7	a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe
650	7	a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng
650	7	a NATURVETENSKAPx Geovetenskap och miljövetenskapx Geofysik0 (SwePub)105052 hsv//swe
650	7	a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Geophysics0 (SwePub)105052 hsv//eng
650	7	a NATURVETENSKAPx Fysikx Fusion, plasma och rymdfysik0 (SwePub)103032 hsv//swe
650	7	a NATURAL SCIENCESx Physical Sciencesx Fusion, Plasma and Space Physics0 (SwePub)103032 hsv//eng
653		a travelling ionospheric disturbances
653		a Ionospheric scintillation
653		a instability mechanisms
700	1	a Forte, Biagiou University of Bath4 aut
700	1	a Astin, Ivanu University of Bath4 aut
700	1	a Allbrook, Tomu University of Bath4 aut
700	1	a Arnold, Alexu University of Bath4 aut
700	1	a Wood, Alanu Nottingham Trent University4 aut
700	1	a Dorrian, Garethu University of Birmingham4 aut
700	1	a Mevius, Maaijkeu Netherlands Institute for Radio Astronomy (ASTRON)4 aut
700	1	a Rothkaehl, Hannau Polish Academy of Sciences4 aut
700	1	a Matyjasiak, Barbarau Polish Academy of Sciences4 aut
700	1	a Krankowski, Andrzeju University of Warmia and Mazury in Olsztyn4 aut
700	1	a Anderson, James M.u Technische Universität Berlin,Deutsches GeoForschungsZentrum (GFZ),German Research Centre for Geosciences (GFZ)4 aut
700	1	a Asgekar, Ashishu Shell Technology Center4 aut
700	1	a Avruch, I. Max4 aut
700	1	a Bentum, Marku Netherlands Institute for Radio Astronomy (ASTRON)4 aut
700	1	a Bisi, Mario M.u STFC Rutherford Appleton Laboratory4 aut
700	1	a Butcher, Harvey R.u Australian National University4 aut
700	1	a Ciardi, Benedettau Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut
700	1	a Dabrowski, Bartoszu University of Warmia and Mazury in Olsztyn4 aut
700	1	a Damstra, Siedsu Netherlands Institute for Radio Astronomy (ASTRON)4 aut
700	1	a de Gasperin, Francescou Universität Hamburg,University of Hamburg4 aut
700	1	a Duscha, Svenu Netherlands Institute for Radio Astronomy (ASTRON)4 aut
700	1	a Eisloeffel, Jochenu Thüringer Landessternwarte Tautenburg4 aut
700	1	a Franzen, Thomas M. O.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
700	1	a Garrett, Michael A.u University of Manchester,Universiteit Leiden (UL),Leiden University (UL)4 aut
700	1	a Griessmeier, Jean-Matthiasu Universite d'Orleans,University of Orléans4 aut
700	1	a Gunst, Andre W.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
700	1	a Hoeft, Matthiasu Thüringer Landessternwarte Tautenburg4 aut
700	1	a Horandel, Jorg R.u National Institute for Subatomic Physics (NIKHEF),Vrije Universiteit Brüssel (VUB),Vrije Universiteit Brussel (VUB),Radboud Universiteit,Radboud University4 aut
700	1	a Iacobelli, Marcou Netherlands Institute for Radio Astronomy (ASTRON)4 aut
700	1	a Intema, Huib T.u Universiteit Leiden (UL),Leiden University (UL)4 aut
700	1	a Koopmans, Leon V. E.u Rijksuniversiteit Groningen,University of Groningen4 aut
700	1	a Maat, Peteru Netherlands Institute for Radio Astronomy (ASTRON)4 aut
700	1	a Mann, Gottfriedu Leibniz-Institut Für Astrophysik Potsdam,Leibniz Institute for Astrophysics Potsdam4 aut
700	1	a Nelles, Annau Deutsches Elektronen-Synchrotron (DESY),Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)4 aut
700	1	a Paas, Harmu Rijksuniversiteit Groningen,University of Groningen4 aut
700	1	a Pandey, Vishambhar N.u Netherlands Institute for Radio Astronomy (ASTRON),Rijksuniversiteit Groningen,University of Groningen4 aut
700	1	a Reich, Wolfgangu Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut
700	1	a Rowlinson, Antoniau Netherlands Institute for Radio Astronomy (ASTRON),Universiteit Van Amsterdam,University of Amsterdam4 aut
700	1	a Ruiter, Marku Netherlands Institute for Radio Astronomy (ASTRON)4 aut
700	1	a Schwarz, Dominik J.u Universität Bielefeld,Bielefeld University4 aut
700	1	a Serylak, Macieju University of the Western Cape4 aut
700	1	a Shulevski, Aleksanderu Universiteit Van Amsterdam,University of Amsterdam4 aut
700	1	a Smirnov, Oleg M.u Rhodes University4 aut
700	1	a Soida, Marianu Jagiellonian University in Kraków, Poland4 aut
700	1	a Steinmetz, Matthiasu Leibniz-Institut Für Astrophysik Potsdam,Leibniz Institute for Astrophysics Potsdam4 aut
700	1	a Thoudam, Satyendrau Khalifa University of Science and Technology4 aut
700	1	a Toribio Perez, Maria Carmen,d 1981u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)toribio
700	1	a van Ardenne, Arnoldu Netherlands Institute for Radio Astronomy (ASTRON)4 aut
700	1	a van Bemmel, Ilse M.u Joint Institute for VLBI in Europe (JIVE)4 aut
700	1	a van der Wiel, Matthijs H. D.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
700	1	a van Haarlem, Michiel P.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
700	1	a Vermeulen, Rene C.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
700	1	a Vocks, Christianu Leibniz-Institut Für Astrophysik Potsdam,Leibniz Institute for Astrophysics Potsdam4 aut
700	1	a Wijers, Ralph A. M. J.u Universiteit Van Amsterdam,University of Amsterdam4 aut
700	1	a Wucknitz, Olafu Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut
700	1	a Zarka, Philippeu LESIA - Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique,Centre national de la recherche scientifique (CNRS)4 aut
700	1	a Zucca, Pietrou Netherlands Institute for Radio Astronomy (ASTRON)4 aut
710	2	a Netherlands Institute for Radio Astronomy (ASTRON)b University of Bath4 org
773	0	t Journal of Space Weather and Space Climated : EDP Sciencesg 10q 10x 2115-7251
856	4	u https://research.chalmers.se/publication/518173/file/518173_Fulltext.pdfx primaryx freey FULLTEXT
856	4	u https://www.swsc-journal.org/articles/swsc/pdf/2020/01/swsc190078.pdf
856	4 8	u https://research.chalmers.se/publication/518173
856	4 8	u https://doi.org/10.1051/swsc/2020010
856	4 8	u https://research.chalmers.se/publication/516370

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Av författaren/redakt...: Fallows, Richard ...; Forte, Biagio; Astin, Ivan; Allbrook, Tom; Arnold, Alex; Wood, Alan; visa fler...; Dorrian, Gareth; Mevius, Maaijke; Rothkaehl, Hanna; Matyjasiak, Barb ...; Krankowski, Andr ...; Anderson, James ...; Asgekar, Ashish; Avruch, I. Max; Bentum, Mark; Bisi, Mario M.; Butcher, Harvey ...; Ciardi, Benedett ...; Dabrowski, Barto ...; Damstra, Sieds; de Gasperin, Fra ...; Duscha, Sven; Eisloeffel, Joch ...; Franzen, Thomas ...; Garrett, Michael ...; Griessmeier, Jea ...; Gunst, Andre W.; Hoeft, Matthias; Horandel, Jorg R ...; Iacobelli, Marco; Intema, Huib T.; Koopmans, Leon V ...; Maat, Peter; Mann, Gottfried; Nelles, Anna; Paas, Harm; Pandey, Vishambh ...; Reich, Wolfgang; Rowlinson, Anton ...; Ruiter, Mark; Schwarz, Dominik ...; Serylak, Maciej; Shulevski, Aleks ...; Smirnov, Oleg M.; Soida, Marian; Steinmetz, Matth ...; Thoudam, Satyend ...; Toribio Perez, M ...; van Ardenne, Arn ...; van Bemmel, Ilse ...; van der Wiel, Ma ...; van Haarlem, Mic ...; Vermeulen, Rene ...; Vocks, Christian; Wijers, Ralph A. ...; Wucknitz, Olaf; Zarka, Philippe; Zucca, Pietro; visa färre...

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