Download or read book Winter Polar Ionosphere written by Communications Research Centre (Canada) and published by . This book was released on 1978 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structure and Dynamics of the Winter Polar Cap F Region written by J. Buchau and published by . This book was released on 1982 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ground based and airborne measurements of auroral emissions in ionospheric structure in the polar cap, conducted by the AFGL airborne ionospheric Observatory (AIO), have shown the structure and drift of polar cap F-layer auroras. Results from these measurements show three types of polar cap ionospheric structure. In this paper we briefly describe auroral dynamics measured by an All-Sky Imaging Photometer (ASIP). These optical measurements provide a framework in which to interpret the ionospheric sounder data from the Digisonde 128 PS.
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:
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).
Download or read book Ionospheric Modeling written by KORENKOV and published by Birkhäuser. This book was released on 2013-12-11 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Earth s Magnetosphere written by Walter Heikkila and published by Elsevier. This book was released on 2011-08-13 with total page 535 pages. Available in PDF, EPUB and Kindle. Book excerpt: The author argues that, after five decades of debate about the interactive of solar wind with the magnetosphere, it is time to get back to basics. Starting with Newton's law, this book also examines Maxwell's equations and subsidiary equations such as continuity, constitutive relations and the Lorentz transformation; Helmholtz' theorem, and Poynting's theorem, among other methods for understanding this interaction. Includes chapters on prompt particle acceleration to high energies, plasma transfer event, and the low latitude boundary layer More than 200 figures illustrate the text Includes a color insert
Download or read book Dynamical Problems in the Earth s Polar Ionosphere written by Joel Albert Fedder and published by . This book was released on 1972 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of the Ionosphere on Communication Navigation and Surveillance Systems written by John M. Goodman and published by . This book was released on 1988 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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).
Download or read book Space Physics and Aeronomy Upper Atmosphere Dynamics and Energetics written by Wenbin Wang and published by John Wiley & Sons. This book was released on 2021-04-27 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive overview of the structure and variability of the upper atmosphere Earth's upper atmosphere is an open system that is strongly influenced by energy and momentum inputs from both above and below. New observation and modeing techniques have provided insights into dynamics, energetics, and chemical processes in the upper atmosphere. Upper Atmosphere Dynamics and Energetics presents an overview of key research advances in upper atmospheric physics, and measurement and modeling techniques, along with remaining challenges for understanding the state and variability of the upper atmospheric system. Volume highlights include: Insights into the interconnections between different areas of upper atmospheric science Appreciation of the dynamics and complexity of the global upper atmospheric system Techniques for observing and measuring the upper atmosphere Responses of the upper atmosphere to external drivers The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals. Find out more about the Space Physics and Aeronomy collection in this Q&A with the Editors in Chief
Download or read book An Analysis of Polar Cap Backscatter Radar Data written by Terence James Elkins and published by . This book was released on 1974 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: A simplified analysis was performed as a preliminary to a more elaborate analysis of data from an FM/CW backscatter sounder experiment known as RECAP in the polar winter ionosphere. The results show that a reasonably accurate simulation of ionogram data can be achieved with the simple procedure and these results are of value in themselves. A brief survey of the morphology of the polar winter ionosphere is included as an aid to further data interpretation. Particular attention was paid to the question of clutter, and a model for the different kinds thereof is presented. The suggestion that active control of the antenna radiation pattern may be used to mitigate against clutter degradation in an OTH backscatter radar was examined and found to have merit. Finally, the question of the observed signal strength characteristics was addressed and a model for non-deviative absorption is presented.
Download or read book Dayside Magnetosphere Interactions written by Qiugang Zong and published by John Wiley & Sons. This book was released on 2020-03-13 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exploring the processes and phenomena of Earth’s dayside magnetosphere Energy and momentum transfer, initially taking place at the dayside magnetopause, is responsible for a variety of phenomenon that we can measure on the ground. Data obtained from observations of Earth’s dayside magnetosphere increases our knowledge of the processes by which solar wind mass, momentum, and energy enter the magnetosphere. Dayside Magnetosphere Interactions outlines the physics and processes of dayside magnetospheric phenomena, the role of solar wind in generating ultra-low frequency waves, and solar wind-magnetosphere-ionosphere coupling. Volume highlights include: Phenomena across different temporal and spatial scales Discussions on dayside aurora, plume dynamics, and related dayside reconnection Results from spacecraft observations, ground-based observations, and simulations Discoveries from the Magnetospheric Multiscale Mission and Van Allen Probes era Exploration of foreshock, bow shock, magnetosheath, magnetopause, and cusps Examination of similar processes occurring around other planets The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals.
Download or read book The Polar Cap Thermosphere ionosphere and Its Role in Solar terrestrial Physics written by COSPAR. Scientific Assembly and published by Pergamon. This book was released on 1998 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Space Weather Monitoring by Ground Based Means written by Oleg Troshichev and published by Springer Science & Business Media. This book was released on 2012-02-10 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book demonstrates that the method, based on the ground polar cap magnetic observations is a reliable diagnosis of the solar wind energy coming into the magnetosphere Method for the uninterruptive monitoring of the magnetosphere state (i.e. space weather). It shows that the solar wind energy pumping power, can be described by the PC growth rate, thus, the magnetospheric substorms features are predetermined by the PC dynamics. Furthermore, it goes on to show that the beginning and ending of magnetic storms is predictable. The magnetic storm start only if the solar energy input into the magnetosphere exceeds a certain level and stops when the energy input turns out to be below this level.
Download or read book Effect of the Ionosphere on Space and Terrestrial Systems written by and published by . This book was released on 1978 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The High Latitude Ionosphere and its Effects on Radio Propagation written by R. D. Hunsucker and published by Cambridge University Press. This book was released on 2007-09-10 with total page 639 pages. Available in PDF, EPUB and Kindle. Book excerpt: A modern treatment of the physics and phenomena of the ionosphere, beginning with the basics of radio propagation and the use of radio techniques in ionospheric studies. Ample cross-referencing, chapter summaries and reference lists make this book an invaluable aid for graduate students, ionospheric physicists and radio engineers.
Download or read book Proceedings of the Symposium on Coordinated Observations of the Ionosphere and the Magnetosphere in the Polar Regions written by and published by . This book was released on 1986 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
