Gotowe bibliografie tematyczne / Equatorial spread F

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  1. Artykuły w czasopismach
  2. Rozprawy doktorskie
  3. Książki
  4. Części książek
  5. Streszczenia konferencji
  6. Raporty organizacyjne

Gotowa bibliografia na temat „Equatorial spread F”

Autor: Grafiati
Data publikacji: 6 września 2023

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Artykuły w czasopismach na temat "Equatorial spread F"

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Becker-Guedes, F., Y. Sahai, P. R. Fagundes, W. L. C. Lima, V. G. Pillat, J. R. Abalde i J. A. Bittencourt. "Geomagnetic storm and equatorial spread-F". Annales Geophysicae 22, nr 9 (23.09.2004): 3231–39. http://dx.doi.org/10.5194/angeo-22-3231-2004.

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Abstract. In August 2000, a new ionospheric sounding station was established at Sao Jose dos Campos (23.2° S, 45.9° W; dip latitude 17.6° S), Brazil, by the University of Vale do Paraiba (UNIVAP). Another ionospheric sounding station was established at Palmas (10.2° S, 48.2° W; dip latitude 5.5° S), Brazil, in April 2002, by UNIVAP in collaboration with the Lutheran University Center of Palmas (CEULP), Lutheran University of Brazil (ULBRA). Both the stations are equipped with digital ionosonde of the type known as Canadian Advanced Digital Ionosonde (CADI). In order to study the effects of geomagnetic storms on equatorial spread-F, we present and discuss three case studies, two from the ionospheric sounding observations at Sao Jose dos Campos (September and November 2000) and one from the simultaneous ionospheric sounding observations at Sao Jose dos Campos and Palmas (July 2003). Salient features from these ionospheric observations are presented and discussed in this paper. It has been observed that sometimes (e.g. 4-5 November 2000) the geomagnetic storm acts as an inhibitor (high strong spread-F season), whereas at other times (e.g. 11-12 July 2003) they act as an initiator (low strong spread-F season), possibly due to corresponding changes in the quiet and disturbed drift patterns during different seasons.
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Chandra, H., G. D. Vyas, H. S. S. Sinha, S. Prakash i R. N. Misra. "Equatorial spread-F campaign over SHAR". Journal of Atmospheric and Solar-Terrestrial Physics 59, nr 2 (styczeń 1997): 191–205. http://dx.doi.org/10.1016/1364-6826(95)00199-9.

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Raghavarao, R., R. Suhasini, H. G. Mayr, W. R. Hoegy i L. E. Wharton. "Equatorial spread-F (ESF) and vertical winds". Journal of Atmospheric and Solar-Terrestrial Physics 61, nr 8 (maj 1999): 607–17. http://dx.doi.org/10.1016/s1364-6826(99)00017-6.

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Laxmi, V. N., i V. K. Tripathi. "Radio wave heating and equatorial spread-F". Journal of Atmospheric and Terrestrial Physics 49, nr 11-12 (listopad 1987): 1071–74. http://dx.doi.org/10.1016/0021-9169(87)90089-4.

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Rodrigues, F. S., M. J. Nicolls, M. A. Milla, J. M. Smith, R. H. Varney, A. Strømme, C. Martinis i J. F. Arratia. "AMISR-14: Observations of equatorial spread F". Geophysical Research Letters 42, nr 13 (7.07.2015): 5100–5108. http://dx.doi.org/10.1002/2015gl064574.

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Anderson, David N., i Robert J. Redmon. "Forecasting scintillation activity and equatorial spread F". Space Weather 15, nr 3 (marzec 2017): 495–502. http://dx.doi.org/10.1002/2016sw001554.

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Roh, Kyoung-Min, Hermann Luehr, Sang-Young Park i Jung-Ho Cho. "The Effect of Equatorial Spread F on Relative Orbit Determination of GRACE Using Differenced GPS Observations". Journal of Astronomy and Space Sciences 26, nr 4 (15.12.2009): 499–510. http://dx.doi.org/10.5140/jass.2009.26.4.499.

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HUANG CHAO-SONG i M.C.KELLEY. "NUMERICAL SIMULATIONS OF LARGE SCALE EQUATORIAL SPREAD F". Acta Physica Sinica 45, nr 11 (1996): 1930. http://dx.doi.org/10.7498/aps.45.1930.

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Kelley, Michael C., Jonathan J. Makela, Brent M. Ledvina i Paul M. Kintner. "Observations of equatorial spread-F from Haleakala, Hawaii". Geophysical Research Letters 29, nr 20 (październik 2002): 64–1. http://dx.doi.org/10.1029/2002gl015509.

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Kelley, M. C. "Equatorial spread-F: recent results and outstanding problems". Journal of Atmospheric and Terrestrial Physics 47, nr 8-10 (sierpień 1985): 745–52. http://dx.doi.org/10.1016/0021-9169(85)90051-0.

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Rozprawy doktorskie na temat "Equatorial spread F"

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Chapagain, Narayan P. "Dynamics of Equatorial Spread F Using Ground-Based Optical and Radar Measurements". DigitalCommons@USU, 2011. https://digitalcommons.usu.edu/etd/897.

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The Earth's equatorial ionosphere most often shows the occurrence of large plasma density and velocity fluctuations with a broad range of scale sizes and amplitudes. These night time ionospheric irregularities in the F-region are commonly referred to as equatorial spread F (ESF) or plasma bubbles (EPBs). This dissertation focuses on analysis of ground-based optical and radar measurements to investigate the development and dynamics of ESF, which can significantly disrupt radio communication and GPS navigation systems. OI (630.0 nm) airglow image data were obtained by the Utah State University all-sky CCD camera, primarily during the equinox period, from three different longitudinal sectors under similar solar flux conditions: Christmas Island in the Central Pacific Ocean, Ascension Island in South Atlantic, and Brasilia and Cariri in Brazil. Well-defined magnetic field-aligned depletions were observed from each of these sites enabling detailed measurements of their morphology and dynamics. These data have also been used to investigate day-to-day and longitudinal variations in the evolution and distribution of the plasma bubbles, and their nocturnal zonal drift velocities. In particular, comparative optical measurements at different longitudinal sectors illustrated interesting findings. During the post midnight period, the data from Christmas Island consistently showed nearly constant eastward bubble velocity at a much higher value (~80 m/s) than expected, while data from Ascension Island exhibited a most unusual shear motion of the bubble structure, up to 55 m/s, on one occasion with westward drift at low latitude and eastward at higher latitudes, evident within the field of view of the camera. In addition, long-term radar observations during 1996-2006 from Jicamarca, Peru have been used to study the climatology of post-sunset ESF irregularities. Results showed that the spread F onset times did not change much with solar flux and that their onset heights increased linearly from solar minimum to solar maximum. On average, radar plume onset occurred earlier with increasing solar flux, and plume onset and peak altitudes increased with solar activity. The F-region upward drift velocities that precede spread F onset increased from solar minimum to solar maximum, and were approximately proportional to the maximum prereversal drift peak velocities.
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Yen, Chou Shueh, i 周雪燕. "Simulation of the neutral wind field effect on equatorial spread F". Thesis, 1995. http://ndltd.ncl.edu.tw/handle/64719132471309062349.

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博士
國立中央大學
大氣物理研究所
84
The neutral wind field effects on the development of the equatorial plasma bubbles have been simulated by a two dimen- sional time-dependent model similar to that developed by Zal- esak and Ossakow. The results indicate that when there exists no neutral wind, any perturbation in the bottom-side of the ionosphere density profile will be amplified by Gravitational Rayleigh-Taylor instability and an up-welling bubble will form as expected. When a weak zonal neutral wind exists and as long as the bubble co-moves with the uniform wind,the bubbles will reserve its simple structure. As the neutral wind becomes str- onger, secondary structures called plumes will grow out from the side-walls of the primary bubble. If the neutral wind has strong vertical shear, east-west symmetry of plasma bubbles are strong- ly distorted. We notice that patches and multiple plumes struct- ures have been observed in the mid- and low- latitude ionosphere. So a two-dimensional linear theory of generalized GRT instabili- ty is present to explain the generation mechanism of the second- ary structures, and it is found that the secondary perturbation is especially unstable at the bubble''s leading edges, even when the bubble has already penetrated into topside ionosphere where linear GRT instability theory predicts stable.
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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.

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The upper atmosphere, a region above ~85 km called the ionosphere and thermosphere, has been studied extensively for over one hundred years. Measurements were often considered in isolation, but today, advances in technology and ground-based distributed arrays have allowed concurrent multi-instruments measurements. In this dissertation, I combine measurements from all-sky imagers (ASIs), coherent scatter radars, incoherent scatter radars (ISRs), and Fabry-Perot interferometers (FPIs). I focus on two phenomena, the midnight temperature maximum (MTM) and equatorial spread F (ESF), using observations from equatorial to mid-latitudes. The spatial characteristics of these phenomena are not fully understood. I combine observations at various latitudes and longitudes to extend MTM detection to mid-latitudes. I present the first simultaneous detections of the MTM at multiple altitudes and latitudes over North America and the first observations below the F-region peak using the Millstone Hill Observatory ISR in a south pointing, low-elevation mode. The MTM can also be observed with an ASI and I present concurrent measurements of the MTM with an ASI and ISR. The Whole Atmosphere Model, a global circulation model, was found to be consistent with these observations. This further verifies that the MTM is partially created by lower atmospheric tides, demonstrating coupling between the lower and upper atmosphere. In addition to the MTM, I investigate different aspects of ESF using ASIs concurrently with other instruments. I compare various scale sizes (sub-meter to kilometers) using coherent scatter radar and an ASI and conclude that the lower hybrid drift instability causes radar echoes to occur preferentially on the western wall of large-scale depletions. The source of day-to-day variability in ESF is not fully known but I show that one driver may be large-scale wave structures (~400 km) that modulate the development of ESF. Finally, I compare concurrent observations of ESF plasma depletions with ASIs at magnetically-conjugate foot points and show how the magnitude and structure of the Earth’s magnetic field is responsible for differences in the morphology and velocity of these depletions. In summary, I have used multi-instrument observations of ESF and the MTM to provide a deeper understanding of the dynamics of the upper atmosphere.
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Książki na temat "Equatorial spread F"

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Calvert, Wynne. Equatorial Spread F; NBS Technical Note 145. Hassell Street Press, 2021.

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Części książek na temat "Equatorial spread F"

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Huba, J. D., G. Joyce i J. Krall. "Three-Dimensional Modeling of Equatorial Spread F". W 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.

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Abdu, Mangalathayil Ali, i E. Alam Kherani. "Coupling Processes in the Equatorial Spread F/Plasma Bubble Irregularity Development". W 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.

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Sekar, R., i 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". W 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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Streszczenia konferencji na temat "Equatorial spread F"

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S. Batista, Inez, M. A. Abdu, R. T. de Medeiros i J. H. A. Sobral. "Equatorial Spread-F And Plasma Bubbles: A Step Towards Prediction". W 6th International Congress of the Brazilian Geophysical Society. European Association of Geoscientists & Engineers, 1999. http://dx.doi.org/10.3997/2214-4609-pdb.215.sbgf018.

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Abdu, M. A., J. R. Souza, I. S. Batista, J. H. A. Sobral, H. Takahashi, J. MacDougall i E. R. de Paula. "Magnetospheric Disturbance Effects On Equatorial Spread F And Thermospheric Winds". W 7th International Congress of the Brazilian Geophysical Society. European Association of Geoscientists & Engineers, 2001. http://dx.doi.org/10.3997/2214-4609-pdb.217.425.

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Cueva, R. Y. C., C. Valladares, E. R. de Paula i I. S. Batista. "Longitudinal variation of equatorial spread F occurrence over South America". W 12th International Congress of the Brazilian Geophysical Society & EXPOGEF, Rio de Janeiro, Brazil, 15-18 August 2011. Society of Exploration Geophysicists and Brazilian Geophysical Society, 2011. http://dx.doi.org/10.1190/sbgf2011-445.

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Vineeth, C., Lijo Jose i T. K. Pant. "Planetary wave oscillations in the occurrence time of Equatorial Spread-F". W 2011 XXXth URSI General Assembly and Scientific Symposium. IEEE, 2011. http://dx.doi.org/10.1109/ursigass.2011.6050977.

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Rodrigues, Fabiano S., Eurico R. de Paula i Alison de O. Moraes. "Coherent backscatter radar imaging of equatorial spread F: Intermediate scale-size structures". W 12th International Congress of the Brazilian Geophysical Society & EXPOGEF, Rio de Janeiro, Brazil, 15-18 August 2011. Society of Exploration Geophysicists and Brazilian Geophysical Society, 2011. http://dx.doi.org/10.1190/sbgf2011-446.

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Klinngam, Somjai, Pornchai Supnithi, Narongsak Manositthichai, Kasemsuk Sepsirisuk, Takuya Tsugawa i Takashi Maruyama. "The statistics of equatorial spread-F at the conjugate stations in Southeast Asia". W 2014 4th Joint International Conference on Information and Communication Technology, Electronic and Electrical Engineering (JICTEE). IEEE, 2014. http://dx.doi.org/10.1109/jictee.2014.6804062.

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Abdu, M. A., I. S. Batista, B. W. Reinisch, J. W. MacDougall, E. A. Kherani i J. H. A. Sobral. "Equatorial spread F echo and irregularity growth processes from conjugate point digital ionograms". W 2011 XXXth URSI General Assembly and Scientific Symposium. IEEE, 2011. http://dx.doi.org/10.1109/ursigass.2011.6050980.

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Aswathy, R. P., G. Manju i Surendra Sunda. "The Response Time Of Equatorial Ionization Anomaly Crest: A Unique Precursor To The Time Of Equatorial Spread F Initiation". W 2019 URSI Asia-Pacific Radio Science Conference (AP-RASC). IEEE, 2019. http://dx.doi.org/10.23919/ursiap-rasc.2019.8738191.

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Thammavongsy, Phimmasone, Pornchai Supnithi, Watid Phakphisut, Kornyanat Hozumi, Takuya Tsugawa i Kallaya Bannop. "The Statistics of Equatorial Spread-F and Effects on Critical Frequency at Chumphon, Thailand". W Sriwijaya International Conference on Information Technology and Its Applications (SICONIAN 2019). Paris, France: Atlantis Press, 2020. http://dx.doi.org/10.2991/aisr.k.200424.105.

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Muralikrishna, P., M. A. Abdu, M. G. S. Aquino i M. C. De Faria. "Equatorial Spread-F Irregularities As Observed By Three Different Rocket-Borne Plasma Density Probes". W 6th International Congress of the Brazilian Geophysical Society. European Association of Geoscientists & Engineers, 1999. http://dx.doi.org/10.3997/2214-4609-pdb.215.sbgf042.

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Raporty organizacyjne na temat "Equatorial spread F"

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Kelley, Michael C. Prediction of Equatorial Spread F Based on Assimilation of Daytime GPS Data. Fort Belvoir, VA: Defense Technical Information Center, wrzesień 2006. http://dx.doi.org/10.21236/ada613105.

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Kelley, Michael C. Prediction of Equatorial Spread F Based on Assimilation of Daytime GPS Data. Fort Belvoir, VA: Defense Technical Information Center, wrzesień 2003. http://dx.doi.org/10.21236/ada628801.

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Kelly, Michael C. Prediction of Equatorial Spread F Based on Assimilation of Daytime GPS Data. Fort Belvoir, VA: Defense Technical Information Center, wrzesień 2007. http://dx.doi.org/10.21236/ada573169.

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Oppenheim, Meers, Yann Tambouret i Yakov Dimant. First Kinetic Simulations of Equatorial Spread-F - Analysis of Kilometer-to-Meter Scale Irregularities. Fort Belvoir, VA: Defense Technical Information Center, luty 2012. http://dx.doi.org/10.21236/ada567574.

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