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Arctic Ionosphere And Aurora
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Book Synopsis Arctic Ionosphere and Aurora by : J. Buchau
Download or read book Arctic Ionosphere and Aurora written by J. Buchau and published by . This book was released on 1970 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: In response to Air Force needs for specifying and forecasting conditions of the Arctic ionosphere, AFCRL's Airborne Ionospheric Laboratory, a highly instrumented NKC 135 jet aircraft, was used in an extensive Arctic research program that started in 1967. To date, 69 flights were made and ionospheric and optical data covering major parts of the auroral oval, mainly the midday sector and the night sector, were collected. During the winter months of 1967, 1968, 1969, and 1970 special emphasis was put on the investigation of the day sector. These flights covered a rather unique and poorly investigated area of the auroral oval, and a detailed report on the observations is given here. A thorough analysis of the data collected in the day sector reveals the existence of a band of continuous particle precipitation south of the location of the discrete aurora. This precipitation hardens towards the south and results in E- and D-region ionization. These observations compare very well with measurements of precipitating particles done by satellite. The investigation of the evening and night sectors showed similar but less organized trends than on the day side. During several flights the continuity of the auroral oval was verified. The investigation indicates that, with additional measurements, it may be possible to develop a model of the Arctic ionosphere. With control measurements from a few ideally located ground stations, the dynamics of the Arctic ionosphere might then be utilized for forecasting propagation conditions in the Arctic. (Author).
Book Synopsis Arctic Ionosphere and Aurora by : J. Buchau
Download or read book Arctic Ionosphere and Aurora written by J. Buchau and published by . This book was released on 1970 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In response to Air Force needs for specifying and forecasting conditions of the Arctic ionosphere, AFCRL's Airborne Ionospheric Laboratory, a highly instrumented NKC 135 jet aircraft, was used in an extensive Arctic research program that started in 1967. To date, 69 flights were made and ionospheric and optical data covering major parts of the auroral oval, mainly the midday sector and the night sector, were collected. During the winter months of 1967, 1968, 1969, and 1970 special emphasis was put on the investigation of the day sector. These flights covered a rather unique and poorly investigated area of the auroral oval, and a detailed report on the observations is given here. A thorough analysis of the data collected in the day sector reveals the existence of a band of continuous particle precipitation south of the location of the discrete aurora. This precipitation hardens towards the south and results in E- and D-region ionization. These observations compare very well with measurements of precipitating particles done by satellite. The investigation of the evening and night sectors showed similar but less organized trends than on the day side. During several flights the continuity of the auroral oval was verified. The investigation indicates that, with additional measurements, it may be possible to develop a model of the Arctic ionosphere. With control measurements from a few ideally located ground stations, the dynamics of the Arctic ionosphere might then be utilized for forecasting propagation conditions in the Arctic. (Author)
Book Synopsis POLAR, Exploring Earthspace in the Realms of the Auroras by :
Download or read book POLAR, Exploring Earthspace in the Realms of the Auroras written by and published by . This book was released on 1993 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dayside and Polar Cap Aurora by : Per Even Sandholt
Download or read book Dayside and Polar Cap Aurora written by Per Even Sandholt and published by Springer Science & Business Media. This book was released on 2006-05-02 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: The auroral emissions in the upper atmosphere of the polar regions of the Earth are evidence of the capture of energetic particles from the Sun, streaming by the Earth as the solar wind. These auroral emissions, then, are a window to outer space, and can provide us with valuable information about electrodynamic coupling processes between the solar wind and the Earth's ionosphere and upper atmosphere. Studying the physics of these phenomena extends our understanding of our plasma universe. Ground-based remote-sensing techniques, able to monitor continuously the variations in the signatures of aurorae, in combination with in-situ satellite and rocket measurements, promise to advance dramatically our understanding of the physical processes taking place at the interface of the atmospheres of the Earth and the Sun. Decoding their complexity brings us closer to reliable prediction of communication environments, especially at high latitudes. This understanding, in turn, will help us resolve problems of communication and navigation across polar regions.
Book Synopsis The Polar Ionosphere and Magnetospheric Processes by : Gunnar Skovli
Download or read book The Polar Ionosphere and Magnetospheric Processes written by Gunnar Skovli and published by . This book was released on 1970 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physics of the Upper Polar Atmosphere by : Asgeir Brekke
Download or read book Physics of the Upper Polar Atmosphere written by Asgeir Brekke and published by Springer Science & Business Media. This book was released on 2012-12-31 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the only extended textbook that covers in particular the physics of the upper polar atmosphere where the polar lights demonstrates the end product of a process taking place at extremely high latitudes between the solar wind and the upper polar atmosphere. A textboook that meets the modern requriement for reading in order to obtain a master of science or a Dr. of science degree in upper polar atmosphere physics or the interaction between the soalr wind and the Earth's atmosphere
Download or read book Aurora written by Candace Savage and published by San Francisco, Calif. : Sierra Club Books. This book was released on 1994 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Popular natural history writer Savage takes readers inside the mystery of the beautiful phenomenon of the aurora borealis, explaining how aurorae happen and how humans have stood in awe and devised whole cosmologies around them since time immemorial. Over 60 photos, 34 in color. Map.
Download or read book Northern Lights written by George Bryson and published by . This book was released on 2001 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electric green pierced by neon blue, shocking pink spinning into violent red, and shimmering purple sidled up against deep indigo: never before have you seen such high-octane colors in the sky, and never before has a book shown the northern lights-aurora borealis-in such vivid color. In Northern Lights, photographers Calvin Hall and Daryl Pederson bring to print nearly a hundred photographs of this amazing natural phenomenon, shot from remote locations all over Alaska and using no filters or digital enhancement. Just as fascinating are the legends, myths, and science surrounding this polar phenomenon, described by George Bryson. As 2002 marks the peak viewing time of the northern lights in an eleven-year cycle, this book brings the elusive magic of the northern lights to stargazers near and far.
Download or read book Aurora written by Harald Falck-Ytter and published by SteinerBooks. This book was released on 1999 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: During long winter nights, the light of the aurora borealis appears over the sparcely populated north. Little is known, however, about these dazzling displays of ghostly light and movement. The author discusses the history, mythology, and science behind auroras. Demonstrating the influence of the sun in the aurora's creation, he also compares the northern lights with phenomena such as lightning and rainbows. Lavishly illustrated with numerous color and black and white pictures, Aurora offers a comprehensive understanding of a mysterious dynamic that has fascinated and even alarmed northern communities through the ages.
Book Synopsis Secrets of the Aurora Borealis by : Syun-Ichi Akasofu
Download or read book Secrets of the Aurora Borealis written by Syun-Ichi Akasofu and published by Alaska Northwest Books. This book was released on 2002 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: An overview of the aurora borealis that covers the science behind it, historical reactions to it and research of it, and aspects of the phenomenon yet to be understood, and provides illustrations--including color photos and nineteenth-century engravings--and a list of further resources.
Book Synopsis Short Duration Sporadic E and Discrete Auroral Events by : A. Pauline Krukonis
Download or read book Short Duration Sporadic E and Discrete Auroral Events written by A. Pauline Krukonis and published by . This book was released on 1979 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The relationship that exists between the occurrence of sporadic E and the incidence of visual aurora is utilized as the basis for the determination of the lifetimes of discrete auroral events in the range of > or = 15 minutes from measurements of durations of sporadic E ionization. Intercomparisons of optical and ionosonde data from aircraft and ground-based installations are presented.
Book Synopsis Detailed Specification of the Arctic Ionosphere and an Application to Three-dimensional Raytracing by : J. Buchau
Download or read book Detailed Specification of the Arctic Ionosphere and an Application to Three-dimensional Raytracing written by J. Buchau and published by . This book was released on 1973 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: A statistical analysis of Alouette topside ionograms shows that the probability of occurrence of the midlatitude F-layer trough is 100 percent in winter and at equinox, and is 50 percent in summer. The trough, which is generally centered on 55 degrees corrected geomagnetic latitude and which is about 5 degrees to 10 degrees wide, extends throughout the night hemisphere with f(o)F2 values less than 2 MHz. Comparison of the location of the trough to the area in which coverage by an over the horizon backscatter (OTHB) system is anticipated shows that the trough will adversely affect system performance in the northeast direction most of the night. An in-depth case study of the effects of the trough on HF propagation was made, based on an instantaneous three-dimensional description of the ionosphere. This description of the ionosphere was composed of cross sections showing ionospheric electron-density structure in the area northeast of the Polar Fox II site. Three-dimensional raytracing was applied to this description of the ionosphere, and the trough and the steep electron-density gradient at the poleward edge of the trough were found to adversely affect propagation of HF signals. (Modified author abstract).
Book Synopsis Arctic Ionosphere Modelling by : Air Force Cambridge Research Laboratories (U.S.)
Download or read book Arctic Ionosphere Modelling written by Air Force Cambridge Research Laboratories (U.S.) and published by . This book was released on 1972 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bibliography on Auroral Radio Wave Propagation by : Wilhelm Nupen
Download or read book Bibliography on Auroral Radio Wave Propagation written by Wilhelm Nupen and published by . This book was released on 1962 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Auroral Phenomenology and Magnetospheric Processes by : Andreas Keiling
Download or read book Auroral Phenomenology and Magnetospheric Processes written by Andreas Keiling and published by John Wiley & Sons. This book was released on 2013-05-09 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 197. Many of the most basic aspects of the aurora remain unexplained. While in the past terrestrial and planetary auroras have been largely treated in separate books, Auroral Phenomenology and Magnetospheric Processes: Earth and Other Planets takes a holistic approach, treating the aurora as a fundamental process and discussing the phenomenology, physics, and relationship with the respective planetary magnetospheres in one volume. While there are some behaviors common in auroras of the different planets, there are also striking differences that test our basic understanding of auroral processes. The objective, upon which this monograph is focused, is to connect our knowledge of auroral morphology to the physical processes in the magnetosphere that power and structure discrete and diffuse auroras. Understanding this connection will result in a more complete explanation of the aurora and also further the goal of being able to interpret the global auroral distributions as a dynamic map of the magnetosphere. The volume synthesizes five major areas: auroral phenomenology, aurora and ionospheric electrodynamics, discrete auroral acceleration, aurora and magnetospheric dynamics, and comparative planetary aurora. Covering the recent advances in observations, simulation, and theory, this book will serve a broad community of scientists, including graduate students, studying auroras at Mars, Earth, Saturn, and Jupiter. Projected beyond our solar system, it may also be of interest for astronomers who are looking for aurora-active exoplanets.
Download or read book The Polar Aurora written by Carl Størmer and published by . This book was released on 1955 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Antarctica and the Arctic Circle [2 volumes] by : Andrew J. Hund
Download or read book Antarctica and the Arctic Circle [2 volumes] written by Andrew J. Hund and published by Bloomsbury Publishing USA. This book was released on 2014-10-14 with total page 867 pages. Available in PDF, EPUB and Kindle. Book excerpt: This one-stop reference is a perfect resource for anyone interested in the North and South Poles, whether their interest relates to history, wildlife, or the geography of these regions in the news today. Global warming, a hot topic among scholars of geography and science, has led to increased interest in studying the earth's polar ice caps, which seem to be melting at an alarming rate. This accessible, two-volume encyclopedia lays a foundation for understanding global warming and other issues related to the North and South Poles. Approximately 350 alphabetically arranged, user-friendly entries treat key terms and topics, important expeditions, major figures, territorial disputes, and much more. Readers will find information on the explorations of Cook, Scott, Amundsen, and Peary; articles on humpback whales, penguins, and polar bears; and explanations of natural phenomena like the Aurora Australis and the polar night. Expedition tourism is covered, as is climate change. Ideal for high school and undergraduate students studying geography, social studies, history, and earth science, the encyclopedia will provide a better understanding of these remote and unfamiliar lands and their place in today's world.
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