Добірка наукової літератури з теми "Equatorial aeronomy"
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Статті в журналах з теми "Equatorial aeronomy"
Mendillo, Michael, Bosheng Lin, and Jules Aarons. "The application of GPS observations to equatorial aeronomy." Radio Science 35, no. 3 (May 2000): 885–904. http://dx.doi.org/10.1029/1999rs002208.
Повний текст джерелаWoodman, R. F. "Spread F – an old equatorial aeronomy problem finally resolved?" Annales Geophysicae 27, no. 5 (May 4, 2009): 1915–34. http://dx.doi.org/10.5194/angeo-27-1915-2009.
Повний текст джерелаBhattacharyya, Archana, Jorge L. Chau, Clezio M. Denardini, David L. Hysell, Jonathan J. Makela, Kazuo Shiokawa, and Erhan Kudeki. "Recent advances in equatorial, low- and mid-latitude aeronomy." Journal of Atmospheric and Solar-Terrestrial Physics 103 (October 2013): 1–2. http://dx.doi.org/10.1016/j.jastp.2013.08.017.
Повний текст джерелаMendillo, Michael, Jeffrey Baumgardner, Marlene Colerico, and Daniel Nottingham. "Imaging science contributions to equatorial aeronomy: Initial results from the MISETA program." Journal of Atmospheric and Solar-Terrestrial Physics 59, no. 13 (September 1997): 1587–99. http://dx.doi.org/10.1016/s1364-6826(96)00158-7.
Повний текст джерелаValladares, C. E., R. Sheehan, S. Basu, H. Kuenzler, and J. Espinoza. "The multi-instrumented studies of equatorial thermosphere aeronomy scintillation system: Climatology of zonal drifts." Journal of Geophysical Research: Space Physics 101, A12 (December 1, 1996): 26839–50. http://dx.doi.org/10.1029/96ja00183.
Повний текст джерелаSahai, Y., K. Shiokawa, and C. E. Valladares. "<i>Preface</i> "Equatorial and low latitude aeronomy"." Annales Geophysicae 22, no. 9 (September 23, 2004): 3085. http://dx.doi.org/10.5194/angeo-22-3085-2004.
Повний текст джерелаJoshi, D., K. Groves, and J. Retterer. "The dependence of the Irregularity Parameter Characterizing the Equatorial Ionospheric Irregularities on the background Ionospheric Density." Journal of Nepal Physical Society 7, no. 1 (May 7, 2021): 1–5. http://dx.doi.org/10.3126/jnphyssoc.v7i1.36967.
Повний текст джерелаMakela, J. J., and J. L. Chau. "<i>Preface</i>"The 11th International Symposium on Equatorial Aeronomy (ISEA-11), Taipei, May 2005"." Annales Geophysicae 24, no. 5 (July 3, 2006): 1279–80. http://dx.doi.org/10.5194/angeo-24-1279-2006.
Повний текст джерелаSWARTZ, W., and J. CHAU. "Foreword to the special issue on papers presented at the Jicamarca 40th Anniversary Workshop40 years of equatorial aeronomy sparked by the Jicamarca radio observatory." Journal of Atmospheric and Solar-Terrestrial Physics 66, no. 17 (November 2004): 1519–20. http://dx.doi.org/10.1016/s1364-6826(04)00225-1.
Повний текст джерелаMartinis, C., J. Baumgardner, S. M. Smith, M. Colerico, and M. Mendillo. "Imaging science at El Leoncito, Argentina." Annales Geophysicae 24, no. 5 (July 3, 2006): 1375–85. http://dx.doi.org/10.5194/angeo-24-1375-2006.
Повний текст джерелаДисертації з теми "Equatorial aeronomy"
Wohlwend, Christian Stephen. "Modeling the Electrodynamics of the Low-Latitude Ionosphere." DigitalCommons@USU, 2008. https://digitalcommons.usu.edu/etd/11.
Повний текст джерелаSilva, Gilmar Alves. "Anomalia equatorial de ionização e a propagação de sinais de rádio." Universidade Presbiteriana Mackenzie, 2018. http://tede.mackenzie.br/jspui/handle/tede/3499.
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The ionosphere plays an important role in the propagation of electromagnetic waves, providing valvable opportunity to study its variability and effects on radio signals. The continuous changing in the ionospheric conditions caused by space weather strongly affects the propagation of electromagnetic waves, particularly in high frequency (HF).This work aims to investigate the propagation of radio signals in the equatorial region, between November 2013 to October 2014 in the following frequencies: 1,8 MHz, 14 MHz, 28 MHz and 50 MHz. The study was performed using DPS4 digisonde data, propagation model (VOACAP) and amateur radio receivers. The work consists of radio signals analysis emitted by two amateur radio stations located in Punta Arenas (latitude: 53.15°S; longitude: 70.92°W; dip. latitude: 39.37ºS) and in Nairóbi (latitude: 1.28ºS; longitude: 36.88ºE; dip. latitude: 10.74ºS). These radio signals were recorded at the amateur radio receiving stations located in Boa Vista (latitude: 2.82°N; longitude: 60.76°W; dip. latitude: 15,14ºN), Campo Grande (latitude: 20.5oS; longitude: 54.7oW; dip. latitude: 16.99ºS) and São Luís (latitude: 2.53oS; longitude: 44.30oW; dip. latitude: 3.28ºS) located in the region of the equatorial ionization anomaly (EIA) and at the magnetic equator in the Brazilian sector. It was emphasized the analysis of the maximum usable frequency (MUF) obtained from the foF2 ionospheric parameter and the signal-to-noise ratio (SNR) in each path between radio amateur transmitters (Tx) and the receivers (Rx). Results indicate that the ionosphere response was different in relation to the radio signals that propagate in and out of the equatorial region. According to SNR values measured at the receiving stations, The communications in 1.8 MHz were only possible at evenings of winter months between Punta Arenas and Boa Vista and between Punta Arenas an Sao Luis. The communications in 14 MHz were possible on all routes during the summer months and during equinoxes period at any hour of the day, but during the winter period the transmissions from Punta Arenas were only received in São Luís and Campo Grande during daylight hours. The 28 MHz transmissions from Nairobi were received during the summer months in all stations 24 hours by day, but transmissions at the same frequency from Punta Arenas only were received in São Luís and Campo Grande. At other times of the year the communications over the same frequency were only possible during daylight hours. The communications in 50 MHz were only possible in the summer months coming from Nairobi station.
A ionosfera desempenha um papel importante na propagação de ondas eletromagnéticas, o que proporciona uma oportunidade para estudar sua variabilidade e seus efeitos sobre os sinais de rádio. A mudança contínua nas condições ionosféricas causadas pelo clima espacial afeta fortemente a propagação principalmente em alta frequência (HF), em virtude disso esse trabalho apresenta resultados de investigação sobre a propagação de sinais de rádio realizado durante um ano, entre novembro de 2013 a outubro de 2014 nas frequências 1,8 MHz, 14 MHz, 28 MHz e 50 MHz na região equatorial. O estudo foi realizado usando dados de digissonda, modelo de propagação (VOACAP) e receptores de rádio amador. O trabalho consiste na análise de sinais de rádio emitidos por duas estações transmissoras de rádio amador localizadas em Punta Arenas (53,15°S; 70,92°W; dip. latitude: 39,37ºS) e em Nairóbi (1,28ºS; 36,88ºE; dip. latitude: 10,74ºS), sendo esses sinais de rádio registrados nas estações receptoras de rádio amador localizadas em Boa Vista (2,82°N; 60,76°W; dip. latitude: 15,14ºN), Campo Grande (20,5oS; 54,7oW; dip. latitude: 16,99ºS) e São Luís (2,53oS; 44,30oW; dip. latitude: 3,28ºS), isto é, na região da anomalia equatorial de ionização (EIA) e no equador magnético no setor brasileiro. O estudo enfatizou a análise do parâmetro ionosférico denominado máxima frequência utilizável (MUF), bem como a relação sinal-ruído (SNR) em cada trajeto entre transmissor (Tx) e receptor (Rx). Os resultados indicam que a resposta da ionosfera foi diferente em relação aos sinais de rádio que se propagam dentro e fora da região equatorial. De acordo com valores da SNR medidos nas estações receptoras, as intensidades dos sinais de rádio nas frequências especificadas variam no período de 24 horas. As comunicações em 1,8 MHz só foram possíveis nos enlaces entre Punta Arenas e Boa Vista e São Luís durante os meses de inverno no período da noite. As comunicações em 14 MHz foram possíveis em todos os trajetos durante 24 horas nos meses de verão e nos equinócios, mas no período de inverno as transmissões de Punta Arenas só foram recebidas em São Luís e Campo Grande durante as horas do dia. As transmissões em 28 MHz de Nairóbi foram recebidas durante 24 horas nos meses de verão em todas as estações, as de Punta Arenas só em São Luís e Campo Grande. Nos demais períodos do ano as comunicações só foram possíveis durante as horas do dia. As comunicações em 50 MHz só foram possíveis nos meses de verão e apenas com a estação de Nairóbi.
Hickey, Dustin A. "Spatial characteristics of the midnight temperature maximum and equatorial spread F from multi-instrument and magnetically conjugate observations." Thesis, 2018. https://hdl.handle.net/2144/33120.
Повний текст джерелаЧастини книг з теми "Equatorial aeronomy"
Huba, J. D., G. Joyce, and J. Krall. "Three-Dimensional Modeling of Equatorial Spread F." In Aeronomy of the Earth's Atmosphere and Ionosphere, 211–18. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0326-1_15.
Повний текст джерелаRamkumar, Geetha. "Dynamical Coupling Between Different Regions of Equatorial Atmosphere." In Aeronomy of the Earth's Atmosphere and Ionosphere, 57–65. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0326-1_3.
Повний текст джерелаKherani, E. Alam, Mangalathayil Ali Abdu, Dave C. Fritts, and Eurico R. de Paula. "The Acoustic Gravity Wave Induced Disturbances in the Equatorial Ionosphere." In Aeronomy of the Earth's Atmosphere and Ionosphere, 141–62. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0326-1_10.
Повний текст джерелаAbdu, Mangalathayil Ali, and E. Alam Kherani. "Coupling Processes in the Equatorial Spread F/Plasma Bubble Irregularity Development." In Aeronomy of the Earth's Atmosphere and Ionosphere, 219–38. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0326-1_16.
Повний текст джерелаAnderson, David. "Daytime Vertical E×B Drift Velocities Inferred from Ground-Based Equatorial Magnetometer Observations." In Aeronomy of the Earth's Atmosphere and Ionosphere, 203–10. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0326-1_14.
Повний текст джерелаMakela, Jonathan J., and Ethan S. Miller. "Influences on the Development of Equatorial Plasma Bubbles: Insights from a Long-Term Optical Dataset." In Aeronomy of the Earth's Atmosphere and Ionosphere, 239–49. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0326-1_17.
Повний текст джерелаFujiwara, Hitoshi, Yasunobu Miyoshi, Hidekatsu Jin, Hiroyuki Shinagawa, and Kaori Terada. "Characteristics of Temperature and Density Structures in the Equatorial Thermosphere Simulated by a Whole Atmosphere GCM." In Aeronomy of the Earth's Atmosphere and Ionosphere, 329–37. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0326-1_24.
Повний текст джерелаBatista, Inez S., Erica M. Diogo, Jonas R. Souza, Mangalathayil Ali Abdu, and Graham J. Bailey. "Equatorial Ionization Anomaly: The Role of Thermospheric Winds and the Effects of the Geomagnetic Field Secular Variation." In Aeronomy of the Earth's Atmosphere and Ionosphere, 317–28. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0326-1_23.
Повний текст джерелаGurubaran, S., R. Dhanya, S. Sathiskumar, and P. T. Patil. "A Case Study of Tidal and Planetary Wave Coupling in the Equatorial Atmosphere-Ionosphere System Over India: Preliminary Results." In Aeronomy of the Earth's Atmosphere and Ionosphere, 177–87. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0326-1_12.
Повний текст джерелаSekar, R., and D. Chakrabarty. "A Review of the Recent Advances in the Investigation of Equatorial Spread F and Space Weather Effects over Indian Sector Using Optical and Other Techniques." In Aeronomy of the Earth's Atmosphere and Ionosphere, 251–68. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0326-1_18.
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