Download or read book Goose Bay Riometer Observations written by Raymond J. Cormier and published by . This book was released on 1974 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: At Goose Bay, Labrador, 30-MHz riometers using a four-corner reflector antenna have been in operation since November 1971. An 18-MHz riometer using a zenith-pointing antenna has been operational since June 1972. A quiet day curve of 30 MHz has been constructed for the Goose Bay 30 MHz, and useful hours of operation for an 18-MHz riometer at this particular site are discussed. The usefulness of the four-corner reflector antenna over a single zenith-pointing antenna is discussed, in particular, in an auroral environment. Examples of data illustrating the performance of the antenna system are presented. The data selected are for the geomagnetically active period of mid-April to early May 1973. (Author).
Download or read book Instrumentation Papers written by and published by . This book was released on with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report UAG written by and published by . This book was released on 1973 with total page 1130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Special Reports Air Force Geophysics Laboratory written by and published by . This book was released on 1972 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1976- include Its Geophysics and space data bulletin.
Download or read book Geophysics and Space Data Bulletin written by and published by . This book was released on 1972 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Sweep Frequency Oblique Polar Region High Frequency Radio Propagation Measurements written by Alfred E. Reilly and published by . This book was released on 1977 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Chapman-Davies-Littlewood technique for the computation of the equivalent path of an ionospherically propagated High Frequency (HF) radio signal was used to determine the most probable modes of oblique propagation and the corresponding frequency windows that existed during six experimental aircraft flights in the polar region. In comparison to these results, the Elkins-Rush HF Polar Predictive Model has been found to be inadequate for short-term propagation predictions. These oblique propagation measurements have verified Feldstein and Starkov's conclusion that the magnetic Index Q is a good indicator of the position, shape, and size of the Instantaneous Auroral Oval as they have defined it on the basis of ground-based optical measurements which they subjected to statistical analyses. An approach has been developed which sheds new light on the behavior of HF signals propagating via the polar ionosphere. On the basis of the results achieved using this approach, it is recommended that an attempt be made to develop a new method of predicting short-term polar region HF propagation conditions well in advance (that is, an hour or more in advance in real time). A hypothetical example of an application of such a method is given. Action should be taken soon to exploit this possibility. Additional work could extend the applicability of this approach beyond anything that has seemed feasible before. New understanding of the physics of the polar ionosphere could result. It is hoped that this report will stimulate the experimental and theoretical research that will result in this increased understanding of the polar ionosphere. (Author).
Download or read book Report on Research at AFCRL written by Air Force Cambridge Research Laboratories (U.S.) and published by . This book was released on 1976 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1986 with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ionospheric Radio Communications written by K. Folkestad and published by Springer. This book was released on 2013-12-11 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Intercorrelated Satellite Observations Related to Solar Events written by V. Manno and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 629 pages. Available in PDF, EPUB and Kindle. Book excerpt: The European Space Research Organisation put its first satellite into orbit in March 1968 and was successful with two more before the end of that year. It was not entirely surprising therefore that the third annual ESLAB/ESRIN Symposium should in some way deal with the results obtained. This book is the Proceedings of that Sym posium which, for reasons which Dr. Trendelenburg explains in the introductory talk, concentrated on intercorrelating phenomena occurring during solar events and in particular during the event of 25 February 1969. It is generally acknowledged that space data could yield a much more fruitful harvest if measurements taken simulta neously in different regions of space could be compared and the detectors inter calibrated. ESRO therefore sought right from the start to encourage this comparison of data. The first two days of the Symposium (16 and 17 September 1969) were devoted to review lectures on inter-related phenomena occurring on the sun, through inter planetary space and the magnetosphere right down to the earth's ionosphere. The last two days were used to hear papers presenting results obtained from the ESRO and certain U. S. S. R. and U. S. A. satellites during the solar events around 25 February 1969. The Proceedings published here follow the same sequence as the Symposium presentations. Because of the short time interval between the solar event and the Symposium, some of the data presented in the second part must be regarded as preliminary.
Download or read book Journal of Research written by United States. National Bureau of Standards and published by . This book was released on 1965 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Research of the National Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1965 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Research Papers written by and published by . This book was released on 1977 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Arctic Bulletin written by and published by . This book was released on 1973 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: One issue each year devoted to the annual report.
Download or read book Government Reports Announcements written by and published by . This book was released on 1974-10-04 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radio Techniques for Probing the Terrestrial Ionosphere written by Robert D. Hunsucker and published by Springer Science & Business Media. This book was released on 2013-03-07 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the years since the pioneering efforts of Sir Edward Appleton, M. A. F. Barnett, G. Breit, and M. A. Thve, many radio techniques have been employed to investigate the terrestrial ionosphere. The purposes of this book are to exam ine the basic physical interaction process of radio waves with the ionosphere, scrutinize each of the radio techniques currently in use, and describe the elements of each technique, as well as assess their capabilities and limitations. I have included some of the history of each technique, since we often tend to forget the efforts of the "pioneers". The interaction of radio waves with the terrestrial ionosphere has been described in considerable detail in several "classic" treatments, e.g., Ratcliffe (1959), Al'pert (1963), Budden (1961) and Davies (1965), Rishbeth and e.g., Flock (1979), Davies Garriott (1969), and in other more recent books, (1990), Hargreaves (1979), and Budden (1985). A few of the radio techniques have been described by Hargreaves (1979) and a book by Giraud and Petit (1978) has also included discussion of several of the techniques. The "WITS" handbook No. 2 (1989) also contains description of several radio techniques.
Download or read book Ionospheric Multi Spacecraft Analysis Tools written by Malcolm Wray Dunlop and published by Springer Nature. This book was released on 2019-10-29 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book provides a comprehensive toolbox of analysis techniques for ionospheric multi-satellite missions. The immediate need for this volume was motivated by the ongoing ESA Swarm satellite mission, but the tools that are described are general and can be used for any future ionospheric multi-satellite mission with comparable instrumentation. In addition to researching the immediate plasma environment and its coupling to other regions, such a mission aims to study the Earth’s main magnetic field and its anomalies caused by core, mantle, or crustal sources. The parameters for carrying out this kind of work are examined in these chapters. Besides currents, electric fields, and plasma convection, these parameters include ionospheric conductance, Joule heating, neutral gas densities, and neutral winds.
