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Found 189 entries in the Bibliography.
Showing entries from 101 through 150
| 2016 |
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Ionospheric effects of magnetospheric and thermospheric disturbances on March 17--19, 2015 Using vertical and oblique radio-sounding data, we analyze the ionospheric and thermospheric disturbances during the magnetic storm that occurred in northeastern Russia on March 17\textendash19, 2015. We consider the heliospheric sources that induced the magnetic storm. During the main and early recovery phases, the midlatitude stations are characterized by extremely low values of electron density at the F2 layer maximum. Using oblique sounding data, we recorded signals that propagated outside the great circle ar ... Polekh, N.; Zolotukhina, N.; Romanova, E.; Ponomarchuk, S.; Kurkin, V.; Podlesnyi, A.; Published by: Geomagnetism and Aeronomy Published on: 09/2016 YEAR: 2016 DOI: 10.1134/S0016793216040174 |
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Kushnarenko, Galina; Yakovleva, O.E.; Kuznetsova, G.M.; Published by: Solnechno-Zemnaya Fizika Published on: 08/2016 YEAR: 2016 DOI: 10.12737/issue_58e1a5fe7dc198.3567233310.12737/21465 |
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The current study aims at investigating and identifying the ionospheric effects of the geomagnetic storm that occurred during 17\textendash19 March 2015. Incidentally, with SYM-H hitting a minimum of -232\ nT, this was the strongest storm of the current solar cycle 24. The study investigates how the storm has affected the equatorial, low-latitude, and midlatitude ionosphere in the American and the European sectors using available ground-based ionosonde and GPS TEC (total electron content) data. The possible ... Nayak, Chinmaya; Tsai, L.-C.; Su, S.-Y.; Galkin, I.; Tan, Adrian; Nofri, Ed; Jamjareegulgarn, Punyawi; Published by: Journal of Geophysical Research: Space Physics Published on: 07/2016 YEAR: 2016 DOI: 10.1002/2016JA022489 |
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This paper presents a study of the St Patrick\textquoterights Day storm of 2015, with its ionospheric response at middle and low latitudes. The effects of the storm in each longitudinal sector (Asian, African, American, and Pacific) are characterized using global and regional electron content. At the beginning of the storm, one or two ionospheric positive storm effects are observed depending on the longitudinal zones. After the main phase of the storm, a strong decrease in ionization is observed at all longitudes, lasting ... Nava, B.; iguez-Zuluaga, Rodr\; Alazo-Cuartas, K.; Kashcheyev, A.; e, Migoya-Oru\; Radicella, S.M.; Amory-Mazaudier, C.; Fleury, R.; Published by: Journal of Geophysical Research: Space Physics Published on: 03/2016 YEAR: 2016 DOI: 10.1002/2015JA022299 |
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Romanova, Elena; Zherebtsov, Gelii; Polekh, Nelya; Wang, Xiao; Wang, Guojun; Zolotukhina, Nina; Shi, Jiankui; Published by: 41st COSPAR Scientific Assembly Published on: |
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Ionospheric effects of magnetospheric and thermospheric disturbances on March 17—19, 2015 Using vertical and oblique radio-sounding data, we analyze the ionospheric and thermospheric disturbances during the magnetic storm that occurred in northeastern Russia on March Polekh, NM; Zolotukhina, NA; Romanova, EB; Ponomarchuk, SN; Kurkin, VI; Podlesnyi, AV; Published by: Geomagnetism and Aeronomy Published on: |
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This work estimates global‐mean K zz using Sounding of the Atmosphere using Broadband Emission Radiometry/Thermosphere‐Ionosphere‐Mesosphere Energetics and Dynamics Salinas, Cornelius; Chang, Loren; Liang, Mao-Chang; Yue, Jia; , Russell; Mlynczak, Martin; Published by: Journal of Geophysical Research: Space Physics Published on: YEAR: 2016 DOI: 10.1002/2016JA023161 |
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F2 region response to geomagnetic disturbances across Indian latitudes: O (1S) dayglow emission during this storm is also examined by using the GUVI column O/N 2 ratio and is depicted in Figure 9. It is to be mentioned here that GUVI provides a global image, which is gathered Upadhayaya, AK; Gupta, Sumedha; Brahmanandam, PS; Published by: Journal of Geophysical Research: Space Physics Published on: YEAR: 2016 DOI: 10.1002/2015JA021366 |
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This paper examines the spatio-temporal dynamics of backscattering signals during St. Patrick’s Day two-step intense geomagnetic storm from the Yekaterinburg Coherent Radar ( Zolotukhina, NA; Kurkin, VI; Polekh, NM; Romanova, EB; Published by: Solar-Terrestrial Physics Published on: |
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Reidy, Jade; Fear, Robert; Lanchester, Betty; Whiter, Daniel; Kavanagh, Andrew; Paxton, Larry; Zhang, Yongliang; Published by: Published on: |
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Middle-and low-latitude ionosphere response to 2015 St. Patrick's Day geomagnetic storm
Nava, B; iguez-Zuluaga, Rodr\; Alazo-Cuartas, K; Kashcheyev, A; e, Migoya-Oru\; Radicella, SM; Amory-Mazaudier, Christine; Fleury, Rolland; Published by: Journal of Geophysical Research: Space Physics Published on: YEAR: 2016 DOI: 10.1002/2015JA022299 |
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Long-term variations in the neutral gas composition of the thermosphere over Norilsk (2003-2013)
Kushnarenko, GP; Yakovleva, OE; Kuznetsova, GM; Published by: Solar-Terrestrial Physics Published on: |
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Storm time variation of radiative cooling of thermosphere by nitric oxide emission
Krishna, MV; Bag, Tikemani; Bharti, Gaurav; Published by: 41st COSPAR Scientific Assembly Published on: |
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SPORT: The Scintillation Prediction Observations Research Task
Spann, James; Swenson, Charles; Durao, Otavio; Loures, Luis; Heelis, Rod; Bishop, Rebecca; Le, Guan; Krause, Linda; Nardin, Clezio; Fonseca, Eloi; , others; Published by: Published on: |
| 2015 |
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Ionospheric effects of solar flares and their associated particle ejections in March 2012 Flares of March 4\textendash9, 2012 were accompanied by an intensification of solar electromagnetic and corpuscular radiations and five coronal mass ejections. Bursts of X-rays and increased solar cosmic ray fluxes caused an increase in ionospheric absorption manifesting itself in data from vertical sounding stations as enhancements of the lowest frequency of reflections up to 4\textendash6\ MHz at the daytime and as the disappearance of reflections in the ionograms of high latitude stations. Interplanetary coronal m ... Zolotukhina, N.; Polekh, N.; Kurkin, V.; Romanova, E.; Published by: Advances in Space Research Published on: 06/2015 YEAR: 2015 DOI: 10.1016/j.asr.2015.03.004 Ionospheric disturbance; Magnetic storm; X-ray flare; Solar cosmic rays; Coronal mass ejection |
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We study the ionospheric response to the geomagnetic storm of 17-18 March 2015 (the St. Patrick s Day 2015 storm) that was up to now the strongest in the 24th solar cycle (minimum Astafyeva, Elvira; Zakharenkova, Irina; Foerster, Matthias; Doornbos, Eelco; Encarnacao, Joao; Siemes, Christian; Published by: Published on: |
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Characteristics of extreme geoelectric fields and their possible causes: Localized peak enhancements
Ngwira, Chigomezyo; Pulkkinen, Antti; Bernabeu, Emanuel; Eichner, Jan; Viljanen, Ari; Crowley, Geoff; Published by: Geophysical Research Letters Published on: |
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Radiative cooling by NO emission observed by TIMED/SABER over Asian sector
Published by: Published on: |
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The Scintillation Prediction Observations Research Task SA43C-04
Spann, James; Swenson, Charles; Dur\~ao, Otavio; Loures, Luis; Heelis, Rod; Bishop, Rebecca; Le, Guan; Krause, Linda; Nardin, Clezio; Fonseca, Eloi; , others; Published by: Published on: |
| 2014 |
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Multiple instrumental observations including GPS total electron content (TEC), foF2 and hmF2 from ionosondes, vertical ion drift measurements from Communication/Navigation Outage Forecasting System, magnetometer data, and far ultraviolet airglow measured by Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics/Global Ultraviolet Imager (TIMED/GUVI) are used to investigate the profound ionospheric disturbances at midlatitude and low latitude during the 14 ... Liu, Jing; Liu, Libo; Nakamura, Takuji; Zhao, Biqiang; Ning, Baiqi; Yoshikawa, A.; Published by: Journal of Geophysical Research: Space Physics Published on: 09/2014 YEAR: 2014 DOI: 10.1002/jgra.v119.910.1002/2014JA020273 GUVI; Ionospheric storm; prompt penetration electric fields; TIMED |
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Attribution of interminima changes in the global thermosphere and ionosphere We present a statistical attribution analysis of the changes in global annual average thermospheric mass density and ionospheric total electron content (TEC) between the cycle 22/23 solar minimum (which occurred at epoch 1996.4) and the prolonged cycle 23/24 minimum (2008.8). The mass density data are derived from orbital drag, and the TEC data are derived from ground-based GPS receivers. The interminima change in mass density was -36\% relative to the 1996.4 yearly average. Considering each multiplicative forcing indepen ... Emmert, J.; McDonald, S.; Drob, D.; Meier, R.; Lean, J.; Picone, J.; Published by: Journal of Geophysical Research: Space Physics Published on: 08/2014 YEAR: 2014 DOI: 10.1002/2013JA019484 ionosphere total electron content; solar minimum; thermosphere mass density |
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Geomagnetic control of equatorial plasma bubble activity modeled by the TIEGCM with Kp Describing the day-to-day variability of Equatorial Plasma Bubble (EPB) occurrence remains a significant challenge. In this study we use the Thermosphere-Ionosphere Electrodynamics General Circulation Model (TIEGCM), driven by solar (F10.7) and geomagnetic (Kp) activity indices, to study daily variations of the linear Rayleigh-Taylor (R-T) instability growth rate in relation to the measured scintillation strength at five longitudinally distributed stations. For locations characterized ... Carter, B.; Retterer, J.; Yizengaw, E.; Groves, K.; Caton, R.; McNamara, L.; Bridgwood, C.; Francis, M.; Terkildsen, M.; Norman, R.; Zhang, K.; Published by: Geophysical Research Letters Published on: 08/2014 YEAR: 2014 DOI: 10.1002/2014GL060953 |
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GPS L1-Frequency Observations of Equatorial Scintillations and Irregularity Zonal Velocities In this work, the climatology of ionospheric scintillations at global positioning system (GPS) L-band frequency and the zonal drift velocities of scintillation-producing irregularities were depicted for the equatorial observatory of S\~ao Luis (2.33\textdegreeS; 44.21\textdegreeW; dip latitude 1.3\textdegreeS), Brazil. This is the first time that the hourly, monthly, and seasonal variations of scintillations and irregularity zonal drifts at S\~ao Luis were characterized during periods of different solar activity levels (f ... Muella, Marcio; de Paula, Eurico; Jonah, Olusegun; Published by: Surveys in Geophysics Published on: 08/2014 YEAR: 2014 DOI: 10.1007/s10712-013-9252-0 GPS; Ionospheric drifts; ionospheric irregularities; Ionospheric scintillation |
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The present work describes the low-latitude ionospheric variability during an unusually prolonged (~33 h) geomagnetically disturbed condition that prevailed during 15\textendash16 July 2012. The low-latitude electron density in summer hemisphere, investigated using ground- and satellite-based observations, responded to this by generating strong negative ionospheric storm on 16 July. The maximum electron density on 16 July over Indian low latitudes was reduced by more than 50\% compared to that on a geomagnetically quiet d ... Bagiya, Mala; Hazarika, Rumajyoti; Laskar, Fazlul; Sunda, Surendra; Gurubaran, S.; Chakrabarty, D.; Bhuyan, P.; Sridharan, R.; Veenadhari, B.; Pallamraju, D.; Published by: Journal of Geophysical Research: Space Physics Published on: 07/2014 YEAR: 2014 DOI: 10.1002/2014JA020156 low-latitude ionosphere; neutral winds; prolonged southward IMF Bz; thermospheric neutral composition |
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A study on ionospheric scintillation near the EIA crest in relation to equatorial electrodynamics Equatorial electrojet (EEJ) data, which are considered as a proxy index of equatorial electric field, are analyzed in conjunction with equatorial ionosonde, total electron content (TEC) and scintillation data near the equatorial ionization anomaly (EIA) crest for the equinoctial months of high solar activity years (2011\textendash2012) to identify any precursor index of postsunset evolution of equatorial electron density irregularities and subsequent occurrence of scintillation near the northern EIA crest. Only geomagneti ... Chatterjee, S.; Chakraborty, S.; Veenadhari, B.; Banola, S.; Published by: Journal of Geophysical Research: Space Physics Published on: 02/2014 YEAR: 2014 DOI: 10.1002/2013JA019466 |
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Ionospheric response to geomagnetic storm on July 14-17, 2012 in East Asia
Romanova, Elena; Zherebtsov, Gelii; Wang, Guojun; Zolotukhina, Nina; Polekh, Nelya; Wang, Xiao; Shi, Jiankui; Published by: 40th COSPAR Scientific Assembly Published on: |
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Liu, Jing; Liu, Libo; Nakamura, Takuji; Zhao, Biqiang; Ning, Baiqi; Yoshikawa, A; Published by: Journal of Geophysical Research: Space Physics Published on: |
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Ionospheric Data Assimilation from a Data Provider's Perspective
Schaefer, Robert; Paxton, Larry; Bust, G; Zhang, Yongliang; Romeo, Giuseppe; Comberiate, Joseph; Gelinas, Lynette; Published by: Published on: |
| 2013 |
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Auroral Precipitation Model and its applications to ionospheric and magnetospheric studies Based on statistical treatment of DMSP F6 and F7 spacecraft observations, an interactive Auroral Precipitation Model (APM) parameterized by magnetic activity has been created (available athttp://apm.pgia.ru/). For a given level of magnetic activity the model yields a global distribution of elect ... Vorobjev, V.G.; Yagodkina, O.I.; Katkalov, Yu.V.; Published by: Journal of Atmospheric and Solar-Terrestrial Physics Published on: 09/2013 YEAR: 2013 DOI: 10.1016/j.jastp.2013.05.007 AL and Dst indexes; Auroral Precipitation Model; Dayside aurorae; Magnetic storm |
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Ionospheric response to a geomagnetic storm during November 8--10, 2004 This paper investigates the response of the equatorial, and near equatorial, ionosphere to geomagnetic disturbances during the period November 8-10, 2004. Ionosonde data from Trivandrum (8.5\textdegreeN 77\textdegreeE and dip 0.5\textdegreeN) and SHAR (13.5\textdegreeN, 80.2\textdegreeE, dip \~5.5\textdegreeN), magnetic field data from Tirunelveli (8.7\textdegreeN, 76.9\textdegreeE, dip latitude 0.5\textdegreeS) and Alibag (18.64\textdegreeN, 72.87\textdegreeE), and GUVI O/N2 data in the Indian longitude sector ... Simi, K.; Manju, G.; Haridas, M.; Nayar, S.; Pant, Tarun; Alex, S.; Published by: Earth, Planets and Space Published on: 05/2013 YEAR: 2013 DOI: 10.5047/eps.2012.09.005 Equatorial Electrojet; Equatorial ionization anomaly; geomagnetic storm; O/N2 ratio |
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Signatures of equatorial plasma bubbles in VHF satellite scintillations and equatorial ionograms Since their discovery in the 1970s, equatorial plasma bubbles (EPBs) have been invoked to explain the propagation of VHF signals on trans-equatorial circuits at night, and blamed for highly detrimental scintillation of VHF and GHz trans-ionospheric communications signals in equatorial regions. Over the last four decades, the properties of EPBs have been deduced by multiple techniques such as incoherent scatter radar, 630 nm airglow, depletions in GPS total electron content observations, VHF and GHz scintillations, and HF ... McNamara, L.; Caton, R.; Parris, R.; Pedersen, T.; Thompson, D.; Wiens, K.; Groves, K.; Published by: Radio Science Published on: 03/2013 YEAR: 2013 DOI: 10.1002/rds.v48.210.1002/rds.20025 |
| 2012 |
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Spatial distribution of auroral precipitation during storms caused by magnetic clouds
Yagodkina, O.I.; Despirak, I.V.; Vorobjev, V.G.; Published by: Journal of Atmospheric and Solar-Terrestrial Physics Published on: Jan-03-2012 YEAR: 2012 DOI: 10.1016/j.jastp.2011.06.009 |
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Bright polar mesospheric clouds formed by main engine exhaust from the space shuttle's final launch
Stevens, Michael; Lossow, Stefan; Fiedler, Jens; Baumgarten, Gerd; übken, Franz-Josef; Hallgren, Kristofer; Hartogh, Paul; Randall, Cora; Lumpe, Jerry; Bailey, Scott; Niciejewski, R.; Meier, R.; Plane, John; Kochenash, Andrew; Murtagh, Donal; Englert, Christoph; Published by: Journal of Geophysical Research: Atmospheres Published on: Apr-10-2013 YEAR: 2012 DOI: 10.1029/2012JD017638 |
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GPS-TEC variations during low solar activity period (2007--2009) at Indian low latitude stations The paper is based on the ionospheric variations in terms of vertical total electron content (VTEC) for the low solar activity period from May 2007 to April 2009 based on the analysis of dual frequency signals from the Global Positioning System (GPS) satellites recorded at ground stations Varanasi (Geographic latitude 25\textd ... Kumar, Sanjay; Priyadarshi, S.; Krishna, Gopi; Singh, A.; Published by: Astrophysics and Space Science Published on: 05/2012 YEAR: 2012 DOI: 10.1007/s10509-011-0973-6 geomagnetic storm; GPS; Ionospheric total electron contents; IRI model |
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Heterogeneous Measurements for Advances in Space Science and Space Weather Forecasting Examples of heterogenous data might include GPS radio occultation limb data and ultraviolet nadir photometry; GUVI/SSUSI cross-track O/N2 maps coupled with SSULI in-track Budzien, Scott; Chua, Damien; Coker, Clayton; Dandenault, Patrick; Dymond, Kenneth; Nicholas, Andrew; Stephan, Andrew; Doe, Richard; Crowley, Geoff; Published by: To emphasize that space weather forecasting with new, full-physics models requires heterogeneous datasets with complementary characteristics—not merely a higher volume of any single data type Published on: |
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SAMI3 Simulations of Ionospheric Variability from 1996 to 2011
McDonald, SE; Lean, J; Huba, JD; Emmert, JT; Drob, DP; Siefring, CL; Meier, RR; Picone, J; Published by: Published on: |
| 2011 |
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Polekh, N.; Kushnarenko, G.; Pirog, O.; Kolpakova, O.; Kuznetsova, G.; Published by: Geomagnetism and Aeronomy Published on: Jan-12-2011 YEAR: 2011 DOI: 10.1134/S0016793211080251 |
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McDonald, Sarah; Coker, Clayton; Dymond, Kenneth; Anderson, David; Araujo-Pradere, Eduardo; Published by: Radio Science Published on: Jan-12-2011 YEAR: 2011 DOI: 10.1029/2011RS004702 |
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Latitudinal profile of UV nightglow and electron precipitations
Dmitriev, A.V.; Yeh, H.-C.; Panasyuk, M.I.; Galkin, V.I.; Garipov, G.K.; Khrenov, B.A.; Klimov, P.A.; Lazutin, L.L.; Myagkova, I.N.; Svertilov, S.I.; Published by: Planetary and Space Science Published on: Jan-06-2011 YEAR: 2011 DOI: 10.1016/j.pss.2011.02.010 |
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Ajello, Joseph; Mangina, Rao; Strickland, Douglas; Dziczek, Dariusz; Published by: Journal of Geophysical Research Published on: Jan-01-2011 YEAR: 2011 DOI: 10.1029/2010JA016103 |
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The production of Titan\textquoterights ultraviolet nitrogen airglow
Stevens, Michael; Gustin, Jacques; Ajello, Joseph; Evans, Scott; Meier, R.; Kochenash, Andrew; Stephan, Andrew; Stewart, Ian; Esposito, Larry; McClintock, William; Holsclaw, Greg; Bradley, Todd; Lewis, B.; Heays, A.; Published by: Journal of Geophysical Research Published on: Jan-01-2011 YEAR: 2011 DOI: 10.1029/2010JA016284 |
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Kushnarenko, G.; Kuznetsova, G.; Kolpakova, O.; Published by: Solar-Terrestrial Physics Published on: |
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Simulating Ionospheric Variability in the Descending Phase of Solar Cycle-23 using SAMI3
McDonald, SE; Lean, J; Huba, JD; Joyce, GR; Emmert, JT; Drob, DP; Stephan, AW; Siefring, CL; Meier, RR; Picone, J; Published by: Published on: |
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Ajello, Joseph; Mangina, Rao; Strickland, Douglas; Dziczek, Dariusz; Published by: Journal of Geophysical Research: Space Physics Published on: |
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Radio tomography imaging based on navigation systems Methods of radio tomography (RT) based on the low- and high-orbital navigational systems and radio occultation data are considered. Examples of RT imaging of the ionosphere in Kunitsyn, VE; Tereshchenko, VE; Andreeva, ES; Nesterov, IA; Nazarenko, MO; Published by: . Published on: YEAR: 2011 DOI: 10.1109/URSIGASS.2011.6051019 |
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It is known that there exists a linear relationship between the maximum velocity of the prereversal enhancement (PRE) of the EXB drift and the strength of the equatorial ionization McDonald, Sarah; Coker, Clayton; Dymond, Kenneth; Anderson, David; Araujo-Pradere, Eduardo; Published by: Radio Science Published on: YEAR: 2011 DOI: 10.1029/2011RS004702 |
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Radio tomography imaging based on navigation systems Methods of radio tomography (RT) based on the low- and high-orbital navigational systems and radio occultation data are considered. Examples of RT imaging of the ionosphere in Kunitsyn, VE; Tereshchenko, VE; Andreeva, ES; Nesterov, IA; Nazarenko, MO; Published by: Published on: YEAR: 2011 DOI: 10.1109/URSIGASS.2011.6051019 |
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Science of opportunity: Heliophysics on the FASTSAT mission and STP-S26 The FASTSAT spacecraft, which was launched on November 19, 2010 on the DoD STP-S26 mission, carries three instruments developed in joint collaboration by NASA GSFC and the Rowland, Douglas; Collier, Michael; Sigwarth, John; Jones, Sarah; Hill, Joanne; Benson, Robert; Choi, Michael; Chornay, Dennis; Cooper, John; Feng, Steven; , others; Published by: Published on: YEAR: 2011 DOI: 10.1109/AERO.2011.5747235 |
| 2010 |
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Nishimura, Y.; Kikuchi, T.; Shinbori, A.; Wygant, J.; Tsuji, Y.; Hori, T.; Ono, T.; Fujita, S.; Tanaka, T.; Published by: Journal of Geophysical Research Published on: Jan-01-2010 YEAR: 2010 DOI: 10.1029/2010JA015491 |
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Gattinger, R.; McDade, I.; an, A.; Boone, C.; Walker, K.; Bernath, P.; Evans, W.; Degenstein, D.; Yee, J.-H.; Sheese, P.; Llewellyn, E.; Published by: Journal of Geophysical Research Published on: Jan-01-2010 YEAR: 2010 DOI: 10.1029/2009JD013205 |