Comissão G

Commission G
Ionospheric Radio and Propagation
2010-2012 activities
Inez S. Batista
[email protected]
Brazilian National Delegate
Research activities related to Commission G are developed at the following institutions (the
identification is still going on and this is only a preliminary list)
•National Institute for Space Research (INPE), São José dos Campos, SP
(www.inpe.br)
•University of Vale do Paraíba (UNIVAP), São José dos Campos, SP, (www.univap.br)
•Center for Radio-Astronomy and Astrophysics (CRAAM/Mackenzie), São Paulo, SP,
(http://www.craam.mackenzie.br)
•Aeronautic Technological Institute (ITA), São José dos Campos, SP (www.ita.br)
•Federal University of Campina Grande (UFCG), Campina Grande, PB
(www.ufcg.edu.br)
Commission G Ionospheric Radio and Propagation 2010-2012 activities
INPE
Digisondes at Cachoeira Paulista, SP, Fortaleza,
CE and São Luís, MA (Dr. Inez S. Batista)
Ionosonde CADI at São João do Cariri in
collaboration with UFCG (Dr. Inez S. Batista and
Dr. Ricardo Buriti)
VHF radars in São Luís, MA (Dr. Eurico de Paula
and Dr. Clezio De Nardin)
A chain of GPS receivers over various locations
in Brazil (Dr. Eurico de Paula)
Commission G Ionospheric Radio and Propagation 2010-2012 activities
UNIVAP
Ionosonde, Riometer and GPS receivers at São
José dos Campos, SP, Palmas, TO, and Manaus,
AM (Dr. Paulo Fagundes)
GPS receivers at Ji-Paraná (Dr. Paulo Fagundes)
Commission G Ionospheric Radio and Propagation 2010-2012 activities
CRAAM
Three more receivers were added to the South America VLF
NETwork (SAVNET), that is now composed by 11 VLF tracking
bases (Dr. Jean-Pierre Raulin)
Scientific objectives and activities using SAVNET:
-long-term monitoring of the low ionosphere (mainly C and D
regions) to infer solar activity temporal trends related to solar
Lyman-alpha radiation variability
-study of transient subionospheric propagation anomalies due
to solar flare events and strong bursts from remote objects like
Anomalous X-ray Pulsars or magnetars, to characterize the
physical properties of the low ionosphere, and the actual
incident photon spectra.
-VLF diagnostics of mesospheric perturbation at high latitudes,
related to the presence of planetary waves.
- Tracking of subionospheric VLF propagation characteristics is
also used to better define the Earth-Ionosphere Waveguide
Commission G Ionospheric Radio and Propagation 2010-2012 activities
CRAAM
•2 VLF systems (AWESOME): one at the Brazilian Base in
Antarctic (EACF) and one at the Itapetinga Radio
Observatory (ROI) in Atibaia (since 2006)
•1 GPS receiver dual frequency for TEC measurements at
EACF (since 2004)
•1 CADI ionosonde CADI at EACF (since March 2009)
•5 riometers: 2 installed in ROI (30 and 38 MHz), and 3 in
EACF (30 and 38 MHz, for polarization measurements in
38 MHz) (since March 2009)
•2 GPS receivers were installed in 2010 at EACF and ROI
to monitor ionosphere TEC and scintillation, as part of the
Expert Group GRAPE (GNSS Research and Application
at Polar Environment) under the coordination of SCAR
(Dr. Emilia Correia)
Commission G Ionospheric Radio and Propagation 2010-2012 activities
CRAAM - Plans for new installations
SAVNET (South America VLF NETwork) is planning another VLF receiver
installed in Quito, Ecuador, until the end of 2012
The observations at the Brazilian Base in Antarctic (EACF) were discontinued
after the fire at the station last summer. The equipments will be put in
operation again in near future (hopefully in 2013).
UNIVAP - Plans for new installations
A new Canadian Digital Ionosonde (CADI) will be installed in Jatai - GO
Commission G Ionospheric Radio and Propagation 2010-2012 activities
INPE - Plans for new installations
•
•
INPE is implanting an ionospheric observatory
in Belém, PA, under the magnetic equator.
The equipments to be installed in this new
observatory are:
–
A coherent radar at 50 MHz with 4 sets
of 16 yagi antennas each. Two sets will
be used for transmission connected to
two transmitters (8 kW each). The 4
sets, connected to 4 receivers, will be
used for reception. The radar operation
will be based in interferometry. The
transmitters are solid state.
–
An ionosonde for vertical sounding,
ionospheric drift measurements and
gravity wave studies.
INPE will install permanent digisondes at the
three sites used for the COPEX campaign
(2002): Boa Vista, Campo Grande and
Cachimbo. The installation in Boa Vista will be
ready at the end of 2012. Campo Grande and
Cachimbo are planned to be concluded in
2013.
Commission G Ionospheric Radio and Propagation 2010-2012 activities
Location of some of the
equipments in Brazil and in the
Brazilian Antarctic Base (INPE,
UNIVAP, CRAAM)
Ionosonde or Digisonde
Ionosonde or Digisonde
(planed or being installed)
Riometer
VLF receiver
VHF radar
VHF radar (planed)
Commission G Ionospheric Radio and Propagation 2010-2012 activities
Summary of GPS
Stations in Brazil:
(INPE, IBGE, INCRA
and LISN/NSF)
SINGLE
FREQUENCY
MAGNETIC EQUATOR
SCINTILLATION (available)
SCINTILLATION AND ZONAL DRIFT (available)
TEC AND SCINTILLATION (NSF)
TEC (RBMC-IBGE) (available)
AFRL ASHTEC (available)
ALLEN-OSBORNE (available upon request)
TEC (RIBAC-INCRA)
SAVNET (South America VLF NETwork)
Commission G Ionospheric Radio and Propagation 2010-2012 activities
Publications
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Abdu, M. A. ; BATISTA, I. S. ; Bertoni, F. C. P. ; Reinisch, B. W. ; Kherani, E. A. ; Sobral, J. H. A. . Equatorial
Ionosphere Responses to Two Magnetic Storms of Moderate Intensity from Conjugate Point Observations in
Brazil. Journal of Geophysical Research, v. 117, p. A05321, 2012.
Abdu, M. A. ; BATISTA, I. S. ; Brum, C. G. M. ; MacDougall, J. ; Santos, A. M. ; Souza, J. R. ; Sobral, J. H. A. .
Solar flux effects on the equatorial evening vertical drift and meridional winds over Brazil: A comparison
between observational data and the IRI model and the HWM representations. Advances in Space Research, v.
46, p. 1078-1085, 2010.
Amorim D.C.M. ; PIMENTA, Alexandre Alvares ; BITTENCOURT, José Augusto ; FAGUNDES, P. R. . Longterm study of medium-scale traveling ionospheric disturbances using O I 630 nm all-sky imaging and
ionosonde over Brazilian low latitudes. Journal of Geophysical Research, v. 116, p. 1-7, 2011.
Balan, N. ; YAMAMOTO, M. ; Sreeja, V. ; BATISTA, I. S. ; Lynn, K. J. W. ; Abdu, M. A. ; Ravindran, S. ;
Kikuchi, T. ; Otsuka, Y. ; Shokawa, K. ; Alex, S. . A statistical study of the response of the dayside equatorial
F2 layer to the main phase of intense geomagnetic storms as an indicator of penetration electric field. Journal
of Geophysical Research, v. 116, p. 1-15pp, 2011.
BATISTA, I. S. ; Abdu, M. A. ; Nogueira, P. A. B. ; Paes, R. R. ; Souza, J. R. ; Reinisch, B. W. ; Rios, V. H. .
Early morning enhancement in ionospheric electron density during intense magnetic storms. Advances in
Space Research, v. 49, p. 1544-1552, 2012.
BATISTA, I. S. ; Diogo, E. M. ; Souza, J. R. ; Abdu, M. A. ; Bailey, G. J. . Equatorial Ionization Anomaly: The
Role of Thermospheric Winds and the Effects of the Geomagnetic Field Secular Variation. In: Abdu,
Mangalathayil Ali; Pancheva, Dora; Bhattacharyya, Archana. (Org.). Aeronomy of the Earth's Atmosphere and
Ionosphere. Aeronomy of the Earth's Atmosphere and Ionosphere. 1ed .: Springer, 2011, v. 2, p. 317-328.
BERTONI, F. ; RAULIN, J. P. ; RIVERO-GAVILAN, H. ; GUEVARA, W. D. ; RODRIGUEZ, R. ; FERNANDEZ,
G. . SAVNET: a ground-based facility for study ionospheric, atmospheric and natural phenomena. Radio
Science Bulletin, v. 334, p. 43-48, 2010.
Commission G Ionospheric Radio and Propagation 2010-2012 activities
Publications
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Bertoni, F.C.P. ; SAHAI, Y. ; Raulin, J.-P. ; Fagundes, P.R. ; PILLAT, V.G. ; Gimenez de Castro, C.G. ; Lima,
W.L.C. . Equatorial spread-F occurrence observed at two near equatorial stations in the Brazilian sector and its
occurrence modulated by planetary waves. Journal of Atmospheric and Solar-Terrestrial Physics, v. 73, p. 457463, 2010.
Candido, C. M. N. ; BATISTA, I. S. ; Becker-Guedes, F. ; Abdu, M. A. ; Sobral, J. H. A. ; Takahashi, H. . Spread-F
occurrence over a southern anomaly crest location in Brazil during June solstice of Solar Minimum Activity. Journal
of Geophysical Research, v. 116, p. A06316-10pp, 2011.
Cardoso, F.A. ; SAHAI, Y. ; Guarnieri, F.L. ; Fagundes, P.R. ; Pillat, V.G. ; da Silva, J.V.P.R. . Dependence of the
F-region peak electron density (foF2) on solar activity observed in the equatorial ionospheric anomaly region in the
Brazilian sector. Advances in Space Research, v. 48, p. 837-841, 2011.
Carrasco, A. J. ; BATISTA, I. S. . Estimation of the initial amplitude of plasma bubble seed perturbation from
ionograms. Radio Science, v. 47, p. RS2008, 2012.
CORREIA, E. ; Kaufmann, P. ; Raulin, J-P. ; BERTONI, F. ; Gavilan, H.R. . Analysis of daytime ionosphere
behavior between 2004 and 2008 in Antarctica. Journal of Atmospheric and Solar-Terrestrial Physics, v. 73, p.
2272-2278, 2011.
COSTA, Emanoel ; de Paula, Eurico R. ; REZENDE, L. F. C. ; Groves, Keith M. ; Roddy, Patrick A. ; Dao, Eugene
V. ; Kelley, Michael C. ; de Paula, E. R. . Equatorial scintillation calculations based on coherent scatter radar and
C/NOFS data. Radio Science, v. 46, p. RS2011, 2011.
de Abreu, A.J. ; SAHAI, Y. ; Fagundes, P.R. ; de Jesus, R. ; Bittencourt, J.A. ; Pillat, V.G. . An investigation of
ionospheric F region response in the Brazilian sector to the super geomagnetic storm of May 2005. Advances in
Space Research, v. 48, p. 1211-1220, 2011.
de Abreu, A. J. ; Fagundes, P. R. ; SAHAI, Y. ; de Jesus, R. ; Bittencourt, J. A. ; Brunini, C. ; Gende, M. ; Pillat, V.
G. ; Lima, W. L. C. ; Abalde, J. R. ; Pimenta, A. A. . Hemispheric asymmetries in the ionospheric response
observed in the American sector during an intense geomagnetic storm. Journal of Geophysical Research, v. 115,
p. A12312-10, 2010.
de Jesus, R. ; SAHAI, Y. ; Guarnieri, F.L. ; Fagundes, P.R. ; de Abreu, A.J. ; Bittencourt, J.A. ; Nagatsuma, T.;
Huang, C.-S.; Lan, H.T. ; Pillat, V.G. . Ionospheric response of equatorial and low latitude F-region during the
intense geomagnetic storm on 24 25 August 2005. Advances in Space Research, v. 49, p. 518-529, 2012.
de JESUS, Rodolfo; SAHAI, Yogeshwar ; F. L. Guarnieri ; Fagundes, P. R. ; Alessandro J. Abreu ; PILLAT, Valdir
Gil ; LIMA, Washington Luis Carvalho . F-region ionospheric parameters observed in the equatorial and low latitude
regions during medium solar activity in the Brazilian sector and comparison with the IRI-2007 model results.
Advances in Space Research, v. 47, p. 718-728, 2011.
Commission G Ionospheric Radio and Propagation 2010-2012 activities
Publications
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De la Luz, Victor ; Lara, Alejandro ; Raulin, Jean-Pierre . SYNTHETIC SPECTRA OF RADIO, MILLIMETER,
SUB-MILLIMETER, AND INFRARED REGIMES WITH NON-LOCAL THERMODYNAMIC EQUILIBRIUM
APPROXIMATION. The Astrophysical Journal, v. 737, p. 1, 2011.
De Mendonça, R.R.S. ; Raulin, J.-P. ; Bertoni, F.C.P. ; Echer, E. ; Makhmutov, V.S. ; FERNANDEZ, G. . Longterm and transient time variation of cosmic ray fluxes detected in Argentina by CARPET cosmic ray detector.
Journal of Atmospheric and Solar-Terrestrial Physics, v. 73, p. 1410-1416, 2011.
de Paula, E.R. ; Alam Kherani, E. ; Cueva, R.Y.C. ; Camargo, L.A.P. . Observations of pre-midnight 5-m
irregularities in the equatorial F region over São Luís, Brazil: Solar-flux dependence and seasonal variations.
Journal of Atmospheric and Solar-Terrestrial Physics, v. 73, p. 1544-1554, 2011.
de Paula, E. R. ; Muella, M. T. A. H. ; Sobral, J. H. A. ; Abdu, M. A. ; BATISTA, I. ; Beach, T. L. ; Groves, K. M. .
Magnetic conjugate point observations of kilometer and hundred meter-scale irregularities and zonal drifts.
Journal of Geophysical Research, v. 115, p. 1-15, 2010.
Ely, C. V. ; BATISTA, I. S. ; Abdu, M. A. . Radio occultation electron density profiles from the FORMOSAT3/COSMIC satellites over the Brazilian region: a comparison with Digisonde data. Advances in Space Research,
v. 49, p. 1553-1562, 2012.
Fagundes, P.R. ; Klausner, V. ; Bittencourt, J.A. ; SAHAI, Y. ; Abalde, J.R. . Seasonal and solar cycle
dependence of F3-layer near the southern crest of the equatorial ionospheric anomaly. Advances in Space
Research, v. 48, p. 472-477, 2011.
FAGUNDES, P. R. ; BITTENCOURT, José Augusto ; Alessandro J. Abreu ; Moor LP; MUELLA, Marcio Tadeu de
Assis ; SAHAI, Yogeshwar ; ABALDE, José Ricardo ; PEZZOPANE, M. ; SOBRAL, J. H. A. ; ABDU, A. M. ;
PIMENTA, Alexandre Alvares; Amorim D.C.M. . Atypical nighttime spread-F structure observed near the southern
crest of the ionospheric equatorial ionization anomaly.. Journal of Geophysical Research, p. 1-9, 2012.
HAYAKAWA, M. ; RAULIN, J. P. ; Kasahara, Y. ; Bertoni, F. C. P. ; HOBARA, Y. ; Guevara-Day, W. . Ionospheric
perturbations in possible association with the 2010 Haiti earthquake, as based on medium-distance
subionospheric VLF propagation data. Natural Hazards and Earth System Sciences (Print), v. 11, p. 513-518,
2011.
KAUFMANN, Pierre ; Marcon, Rogério ; Giménez de Castro, C. Guillermo ; White, Stephen M. ; Raulin, JeanPierre ; Correia, Emilia ; Fernandes, Luis Olavo ; de Souza, Rodney V. ; Godoy, Rodolfo ; Marun, Adolfo ;
PEREYRA, Pablo . SUB-THz AND H ACTIVITY DURING THE PREFLARE AND MAIN PHASES OF A CLASS
M2 EVENT. The Astrophysical Journal, v. 742, p. 106-110, 2011.
Commission G Ionospheric Radio and Propagation 2010-2012 activities
Publications
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KLIMENKO, M. V. ; Klimenko, V. V. ; Ratovsky, K. G. ; Goncharenko, L. P. ; SAHAI, Y. ; Fagundes, P. R. ; de
Jesus, R. ; de Abreu, A. J. ; Vesnin, A. M. . Numerical modeling of ionospheric effects in the middle- and lowlatitude region during geomagnetic storm sequence of 9 14 September 2005. Radio Science, v. 46, p. 1-18, 2011.
MacDougall, J. ; Abdu, M. A. ; BATISTA, I. S. ; Buriti, R. A. ; Medeiros, A. F. ; Jayachandran, P. T. ; Borba, G. L. .
Spaced Transmitter Measurements of Medium scale Traveling Ionospheric Disturbances near the equator.
Geophysical Research Letters, v. 38, p. 1-6, 2011.
MAKHMUTOV, V. S. ; Kurt, V. G. ; Yushkov, B. Yu. ; Grechnev, V. V. ; Kaufmann, P. ; Raulin, J. -P. ;
BAZILEVSKAYA, G. A. ; Stozhkov, Yu. I. . Spectral peculiarities of high energy X-ray radiation, gamma radiation,
and Submillimeter radio emission in the impulsive phase of a solar flare. Bulletin of the Russian Academy of
Sciences: Physics, v. 75, p. 747-750, 2011.
Muella, M. T. A. H. ; de Paula, E. R. ; Mitchell, C. ; Kintner, P. M. ; Paes, R. R. ; BATISTA, I. S. . Tomographic
imaging of the equatorial and low-latitude ionosphere over central-eastern Brazil. Earth, Planets and Space, v. 73,
p. 129-138, 2011.
MUELLA, M. T. A. H. ; Paula, E. R. ; Fagundes, P. R. ; Bittencourt, J. A. ; SAHAI, Y. Thermospheric Meridional
Wind Control on Equatorial Scintillations and the Role of the Evening F-Region Height Rise, E B Drift Velocities
and F2-Peak Density Gradients. Surveys in Geophysics, v. 31, p. 509-530, 2010.
Nogueira, P. A. B. ; Abdu, M. A. ; BATISTA, I. S. ; de Siqueira, P. M. . Equatorial Ionization Anomaly and
thermospheric meridional winds during two major storms over Brazilian low latitudes. Journal of Atmospheric and
Solar-Terrestrial Physics, v. 73, p. 1535-1543, 2011.
PEZZOPANE, M. ; Fagundes, P. R. ; Ciraolo, L. ; Correia, E. ; Cabrera, M. A. ; Ezquer, R. G. . Unusual nighttime
impulsive F2 enhancement below the southern anomaly crest under geomagnetically quiet conditions. Journal of
Geophysical Research, v. 116, p. 1-14, 2011.
Raulin, Jean-Pierre ; Bertoni, Fernando C.P. ; KAUFMANN, Pierre ; Gavilán, Hernan R. ; Correia, Emilia ;
Hadano, Rubens; Schuch, Nelson J. . Solar terrestrial, ionospheric and natural phenomena studies using the
South America VLF network (SAVNET). Journal of Atmospheric and Solar-Terrestrial Physics, v. 73, p. 15811586, 2011.
REZENDE, L. F. C. ; PAULA, E. R. ; STEPHANY, S. ; KANTOR, I. J. ; MUELLA, Marcio Tadeu de Assis
Honorato ; Muella, M. T. A. H. ; de Siqueira, P. M. ; Correa, K. S. . Survey and prediction of the ionospheric
scintillation using data mining techniques. Space Weather (Online), v. 8, p. S06D09, 2010.
Commission G Ionospheric Radio and Propagation 2010-2012 activities
Publications
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38.
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SAHAI, Y. ; Fagundes, P. R. ; de Jesus, R. ; de Abreu, A. J. ; CROWLEY, G. ; Kikuchi, T. ; Huang, C.-S. ; Pillat,
V. G. ; Guarnieri, F. L. ; Abalde, J. R. ; Bittencourt, J. A. . Studies of ionospheric F-region response in the Latin
American sector during the geomagnetic storm of 21–22 January 2005. Annales Geophysicae (Berlin), v. 29, p.
919-929, 2011.
Shume, E.B. ; de Paula, E.R. ; Kherani, E.A. ; Abdu, M.A. ; Denardini, C.M. . Equatorial electrojet plasma
irregularities observed during late afternoon by the 30MHz coherent scatter radar in São Luís, Brazil. Journal of
Atmospheric and Solar-Terrestrial Physics, v. 73, p. 1560-1567, 2011.
SHUME, E. B. ; DENARDINI, C. M. ; PAULA, E. R. ; TRIVEDI, N. B. . Variabilities of the equatorial electrojet in
Brazil and Perú. Journal of Geophysical Research, v. 115, p. 10.1029/2009JA0, 2010.
Souza, J. R. ; Brum, C. G. M. ; Abdu, M. A. ; BATISTA, I. S. ; Asevedo Jr., W. ; Bailey, G. J. ; Bittencourt, J. A. .
Parameterized Regional Ionospheric Model and a comparison of its results with experimental data and IRI
representations. Advances in Space Research, v. 46, p. 1032-1038, 2010.
Takahashi, H. ; Vadas, S. L. ; Wrasse, C. M. ; Taylor, M. ; Pautet, P. D. ; Medeiros, A. F. ; Buriti, R. A. ; de Paula,
E. R. ; Abdu, M. A. ; BATISTA, I. S. . Mesosphere Ionosphere Coupling Processes Observed in the F Layer
Bottom-Side Oscillation. In: Abdu, Mangalathayil Ali; Pancheva, Dora; Bhattacharyya, Archana. (Org.). Aeronomy
of the Earth's Atmosphere and Ionosphere. Aeronomy of the Earth's Atmosphere and Ionosphere. 1ed .: Springer,
2011, v. 2, p. 163-175.
Tanaka, Y. T. ; Raulin, Jean-Pierre ; Bertoni, Fernando C. P. ; Fagundes, P. R. ; Chau, J. ; Schuch, N. J. ;
HAYAKAWA, M.; HOBARA, Y. ; TERASAWA, T. ; Takahashi, T. . FIRST VERY LOW FREQUENCY
DETECTION OF SHORT REPEATED BURSTS FROM MAGNETAR SGR J1550 5418. The Astrophysical
Journal, v. 721, p. L24-L27, 2010.
TROTTET, G. ; Raulin, J.-P. ; Giménez ; Lüthi, T. ; Caspi, A. ; Mandrini, C. H. ; Luoni, M. L. ; Kaufmann, P. .
Origin of the Submillimeter Radio Emission During the Time-Extended Phase of a Solar Flare. Solar Physics, v.
273, p. 339-361, 2011.
WHITE, S. M. ; Benz, A. O. ; CHRISTE, S. ; Fárník, F. ; KUNDU, M. R. ; MANN, G. ; NING, Z. ; Raulin, J.-P. ;
Silva-Válio, A. V. R. ; Saint-Hilaire, P. ; VILMER, N. ; WARMUTH, A. . The Relationship Between Solar Radio and
Hard X-ray Emission. Space Science Reviews, v. 159, p. 225-261, 2011.
Commission G Ionospheric Radio and Propagation 2010-2012 activities