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Study Of Equatorial Ionospheric Irregularities Using Space Tetheredmulti Point Technique And Coordinated Ground Based Fpi And Scintillation Measurements
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Book Synopsis Study of Equatorial Ionospheric Irregularities Using Space Tethered,multi-point Technique and Coordinated Ground-based FPI and Scintillation Measurements by : Rohini Sarpeshkar Indiresan
Download or read book Study of Equatorial Ionospheric Irregularities Using Space Tethered,multi-point Technique and Coordinated Ground-based FPI and Scintillation Measurements written by Rohini Sarpeshkar Indiresan and published by . This book was released on 2002 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies of Equatorial Ionospheric F-region Irregularities and Global Sporadic E- Layers Using Ground-based and Space-based GPS Measurements by : Ankur Nauso Kepkar
Download or read book Studies of Equatorial Ionospheric F-region Irregularities and Global Sporadic E- Layers Using Ground-based and Space-based GPS Measurements written by Ankur Nauso Kepkar and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Global Morphology of Ionospheric Scintillations II by : Jules Aarons
Download or read book Global Morphology of Ionospheric Scintillations II written by Jules Aarons and published by . This book was released on 1975 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Updating a review of the global morphology of ionospheric scintillations published in 1971, this study adds additional experimental studies on familiar topics to newer types of measurements of ionospheric irregularities, including in situ experiments and artificial heating of the F-layer.
Book Synopsis Ionospheric Space Weather by : Timothy Fuller-Rowell
Download or read book Ionospheric Space Weather written by Timothy Fuller-Rowell and published by John Wiley & Sons. This book was released on 2016-11-23 with total page 741 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph is the outcome of an American Geophysical Union Chapman Conference on longitude and hemispheric dependence of ionospheric space weather, including the impact of waves propagating from the lower atmosphere. The Chapman Conference was held in Africa as a means of focusing attention on an extensive geographic region where observations are critically needed to address some of the fundamental questions of the physical processes driving the ionosphere locally and globally. The compilation of papers from the conference describes the physics of this system and the mechanisms that control ionospheric space weather in a combination of tutorial-like and focused articles that will be of value to the upper atmosphere scientific community in general and to ongoing global magnetosphere-ionosphere-thermosphere (MIT) modeling efforts in particular. A number of articles from each science theme describe details of the physics behind each phenomenon that help to solve the complexity of the MIT system. Because this volume is an outcome of the research presented at this first space science Chapman Conference held in Africa, it has further provided an opportunity for African scientists to communicate their research results with the international community. In addition, the meeting and this conference volume will greatly enhance the space science education and research interest in the African continent and around the world. Ionospheric Space Weather includes articles from six science themes that were discussed at the Chapman Conference in 2012. These include: Hemispherical dependence of magnetospheric energy injection and the thermosphere-ionosphere response Longitude and hemispheric dependence of storm-enhanced densities (SED) Response of the thermosphere and ionosphere to variability in solar radiation Longitude spatial structure in total electron content and electrodynamics Temporal response to lower-atmosphere disturbances Ionospheric irregularities and scintillation Ionospheric Space Weather: Longitude Dependence and Lower Atmosphere Forcing will be useful to both active researchers and advanced graduate students in the field of physics, geophysics, and engineering, especially those who are keen to acquire a global understanding of ionospheric phenomena, including observational information from all longitude sectors across the globe.
Book Synopsis Ionospheric Scintillations/TEC and In-situ Density Measurements at an Auroral Location in the European Sector by : Eileen MacKenzie
Download or read book Ionospheric Scintillations/TEC and In-situ Density Measurements at an Auroral Location in the European Sector written by Eileen MacKenzie and published by . This book was released on 1987 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: The orbiting HiLat satellite launched in 1983 offered an opportunity for studying ionospheric scintillation parameters in relation to in-situ measurements of ionization density, drift velocity, field-aligned current, and particle precipitation during the sunspot minimum period. This report discusses results of a morphological study based on observations of scintillations and total electron content (TEC) at the auroral oval station at Tromso, Norway, during the period Dec 1983 - Oct 1985. The geometrical enhancement of scintillations observed during alignment of the propagation with the local magnetic L-shell is shown to be the most consistent and conspicuous feature of scintillations in the nighttime auroral oval. The dynamics of the spatial and temporal extent of this region are illustrated in the invariant latitude/magnetic local time grid. Steepening of phase spectral slope in the geometrical enhancement region is indicative of the presence of L-shell aligned sheet-like irregularities at long scale lengths. The seasonal variation of TEC determined from the differential Doppler measurements of HiLat transmissions is discussed in relation to the in-situ density measurements at 830 km. The results are also used to illustrate the dependence of ionospheric structure parameters on short-term variability of solar activity during the sunspot minimum period. This study provides an insight into the nature of magnetospheric coupling with the ionosphere at high latitudes.
Book Synopsis Model of Equatorial Scintillations from in Situ Measurements by : Sunanda Basu
Download or read book Model of Equatorial Scintillations from in Situ Measurements written by Sunanda Basu and published by . This book was released on 1976 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: In situ measurements of F-region irregularity amplitude and ambient electron density made by the retarding potential analyzer (RPA) on OGO-6 near perigee altitude of 400 km have been utilized to derive the variation of electron density deviation over the equatorial region. Based on these measured electron density deviations and other assumed model parameters, including a three-dimensional power-law form of irregularity spectrum of index 4, a model of equatorial scintillations is developed in the framework of diffraction theory. The percentage occurrence contours of estimated equatorial scintillations greater than or equal to 4.5 dB at 140 MHz during 1900 to 2300 LMT for the period November to December 1969 and 1970 have been derived. The model is found to depict a pronounced longitude variation with the scintillation belt width and percentage occurrence being maximum over the African sector. The latitude extent of the spatial scintillation belt narrows over the American sector without much decrease in the scintillation occurrence whereas over the Indian and Far Eastern sectors both the extent and the occurrence are found to decrease. The percentage occurrence of scintillations estimated from this model is found to be consistent with VHF scintillation measurements at Ghana, Huancayo, and Calcutta. In addition, the model was found to be in qualitative agreement with GHz observations at various longitudes made by the COMSAT group. The effect of varying model parameters on scintillation estimates at VHF, UHF and GHz are discussed. Implications of the observed longitudinal variation of scintillations on current theories of equatorial irregularity formation are indicated. (Author)
Book Synopsis Ionospheric Techniques and Phenomena by : A. Giraud
Download or read book Ionospheric Techniques and Phenomena written by A. Giraud and published by Springer Science & Business Media. This book was released on 1978-12-31 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: If our eyes were radio rather than optical wide-band detectors it is well known that for us the brightest object in the sky would still be the Sun; that planets, stars and the Milky Way would still shine feebly (and that we would still occasionally be blinded by man-made sources). What is less well known is that quite a different earthbound overcast would hover about us, with its climatic zones, its seasonal changes, its unpredictable storms and scintillating transparence. To be sure, we can get a sort of glimpse of this peculiar type of weather when we tune our receiver to radio broad casting from some remote spot, or photograph the Earth from space at certain specific wavelengths. Nevertheless no one has ever looked at the ionized shroud of the Earth without the help of sophisticated apparatus, and this is one of the reasons why in this domain the phenomena are not easily abstracted from the use of specific techniques. For generations, the study of the ionosphere has been deeply interwoven with the practice of radio communication and detection. Today however, ionospheric physics is best thought of as a branch of space physics; that part of physics which deals with processes at work in the solar system and methods developed for its exploration.
Book Synopsis Equatorial Irregularity Campaigns, Part I by : Santimay Basu
Download or read book Equatorial Irregularity Campaigns, Part I written by Santimay Basu and published by . This book was released on 1977 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Problem-Solving Workbook on Ionospheric and Space Physics by : Rezy Pradipta
Download or read book A Problem-Solving Workbook on Ionospheric and Space Physics written by Rezy Pradipta and published by John Wiley & Sons. This book was released on 2023-01-19 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Problem-Solving Workbook on Ionospheric and Space Physics Enables students to understand and master basic and advanced concepts of space, atmosphere, and ionospheric physics A Problem-Solving Workbook on Ionospheric and Space Physics is a unique textbook that contains a set of problems and exercises accompanied with complete solutions that explore and elucidate the most relevant concepts in ionospheric and space physics. The author has chosen problems that are interesting topic-wise, challenging, and that exemplify the physical and mathematical reasoning in ionospheric and space physics. Specifically, the text conveys core concepts of ionospheric and space physics using a problem-based approach. Each problem elucidates prototypical aspects that readers can easily generalize. Each problem also consists of multi-part questions to facilitate step-by-step understanding. A short introduction to each problem defines the theme and provides context to the readers. In A Problem-Solving Workbook on Ionospheric and Space Physics, readers can expect to learn about: Remote sensing of ionospheric plasmas from the ground, ionospheric slab thickness of a transparent layer, reflectometry, and doppler effects in reflection/refraction of electromagnetic waves Chapman theory of ionospheric layer formation, magnetic fields generated by the equatorial electrojet current, and fundamentals of GPS total electron content (TEC) measurements Barker codes and radar pulse compression, abel inversion of ionosonde trace data, and phase and group velocities of acoustic-gravity waves The use of deconvolution in radar scans, sporadic-E layers and Kelvin-Helmholtz instability due to wind shear, and Brunt-Vaisala frequency Thanks to the careful selection of included material, A Problem-Solving Workbook on Ionospheric and Space Physics serves as a gateway for advanced students and early-career researchers towards actual research-level problems in the field. As the problems are textbook-agnostic, students can easily self-study and learn about the subject outside the classroom.
Book Synopsis Low-Frequency Waves and Irregularities in the Ionosphere by : N. D'Angelo
Download or read book Low-Frequency Waves and Irregularities in the Ionosphere written by N. D'Angelo and published by Springer Science & Business Media. This book was released on 2013-12-17 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last week of September 1968, ESRIN (the European Space Research Institute) held the ESRIN-ESLAB Symposium on 'Low-Frequency Waves and Irregularities in the Ionosphere' in Frascati, near Rome. The symposium was attended by about 60 participants, including speakers from most of the ESRO member states, the U.S.A., the U.S.S.R., and Peru. The main topics covered were: (a) observations of ionospheric irregularities by radar scattering, (b) scintillations of satellite signals, (c) geomagnetic micropulsations, and (d) whistlers. Both theoretical and observational aspects were treated. In addition, laboratory results on low-frequency waves in plasmas were discussed, emphasis being given to their possible relevance to low-frequency ionospheric phenomena. Finally, a brief presentation (not included in these proceedings) of the ESRO rocket and satellite program was given by Dr. Pedersen of ESLAB. The symposium provided an exchange of information among workers in closely related fields. It was also valuable in bringing together people whose experience is predominantly in ionospheric observations with others whose field of interest is mainly in plasma physics (theoretical or laboratory) - a combination that seemed particularly appropriate to ESRIN's program and functions.
Book Synopsis Ionospheric Electron Content and Radio Scintillations During Magnetospherically Quiet Periods in 1970-71 by : Gerald S. Hawkins
Download or read book Ionospheric Electron Content and Radio Scintillations During Magnetospherically Quiet Periods in 1970-71 written by Gerald S. Hawkins and published by . This book was released on 1974 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Midlatitude Ionospheric Dynamics and Disturbances by : Paul M. Kintner, Jr.
Download or read book Midlatitude Ionospheric Dynamics and Disturbances written by Paul M. Kintner, Jr. and published by John Wiley & Sons. This book was released on 2013-05-03 with total page 762 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 181. Filling the need for a 20-year lag in substantial consideration of the midlatitude ionosphere, this volume focuses on work that takes advantage of GPS and UV imaging from satellites over the past decade, two methods that have profoundly transformed our understanding of this stratum of the atmosphere. Its interdisciplinary content brings together researchers of the solar wind, magnetosphere, ionosphere, thermosphere, polar and equatorial ionospheres, and space weather. Modeling and assimilative imaging of the ionosphere and thermosphere show for the first time the complex and global impact of midlatitude ionospheric storms. The editors invited the leading experts in the following areas to contribute the chapters herein: Characterization of Midlatitude Storms Electric Field Coupling From the Heliosphere and Inner Magnetosphere Thermospheric Control of the Midlatitude Ionosphere Ionospheric Irregularities Experimental Methods and New Techniques These themes were chosen to create a path for understanding the midlatitude ionosphere. They continue to be largely valid and represent a coherent division of the subject matter. They will be critical for understanding space weather during the upcoming solar maximum. This book was inspired by the Chapman Conference of the same name held January 2007.
Book Synopsis Ionospheric Space Weather by : Ljiljana R. Cander
Download or read book Ionospheric Space Weather written by Ljiljana R. Cander and published by Springer. This book was released on 2018-09-15 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes essential concepts of, and the status quo in, the field of ionospheric space weather. It explains why our society on planet Earth and moving outwards into space cannot work safely, function efficiently, or progress steadily without committed and comprehensive research initiatives addressing space weather. These initiatives must provide space environment specifications, warnings, and forecasts, all of which need to be timely, accurate and reliable. Cause and effect models of the Earth’s ionosphere are discussed in terms of the spatial and temporal dimensions of background variability, storms, gradients, irregularities, and waves in both current and long-term research activities. Starting from dynamic processes on the Sun, in the interplanetary medium, and in the Earth’s magnetosphere, ionosphere, and atmosphere, the text focuses on the dominant features of the plasma medium under normal and extreme conditions over the European zone during the last few Solar Cycles. One of the book’s most unique features is a series of fundamental examples that offer profound insights into ionospheric climate and weather. Various approaches for acquiring and disseminating the necessary data and forecasting analyses are discussed, and interesting analogies are observed between terrestrial and space weather – both of which could produce lasting social consequences, with not only academic but also concrete economic implications. The book’s primary goal is to foster the development of ionospheric space weather products and services that are capable of satisfying the ever-growing demand for space-based technology, and are ready for the society of the not-so-distant future.
Book Synopsis Ionospheric Tomography by : Viacheslav E. Kunitsyn
Download or read book Ionospheric Tomography written by Viacheslav E. Kunitsyn and published by Springer. This book was released on 2014-03-12 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Authored by leading international researchers, this monograph introduces and reviews developed tomograhic methods for discovering 2D and 3D structures of the ionosphere, and discusses the experimental implementation of these methods. The detailed derivations and explanations make this book an excellent starting point for non-specialists.
Book Synopsis Global Morphology of Ionospheric Scintillations by : Jules Aarons
Download or read book Global Morphology of Ionospheric Scintillations written by Jules Aarons and published by . This book was released on 1970 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amplitude fluctuations produced by small irregularities in electron density in the F-layer of the ionosphere (at 300 to 400 km height) can be a problem to communication and navigation systems in the VHF-UHF range. Recent measurements, primarily by AFCRL, are shown with emphasis on results at high and equatorial latitudes. At high latitudes an irregularity region exists whose lower boundary reaches 57 degrees invariant latitude near midnight. During magnetic storms the boundary descends to lower latitudes and the fading becomes deeper. Over the polar cap scintillations are somewhat diminished. When observing synchronous satellites through the irregularity region, deep and fast fading is frequently seen, with fade rates to one per second. Irregularities produce deep scintillations in the VHF range plus or minus 15 degrees from the geomagnetic equator. In equatorial regions maximum occurrence of high level scintillations takes place between 2100 and 2400 local time during the equinoxes; a minimum occurrence is observed during the solstices. When the sunspot number decreases, the equatorial irregularity region spreads and becomes larger. The data for various latitudes has been placed in statistical form, that is, distribution of amplitudes for 15-min samples as well as for periods of 1 yr and longer. (Author).
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781722220709 Total Pages :34 pages Book Rating :4.2/5 (27 download)
Book Synopsis Experimental Studies of Ionospheric Irregularities and Related Plasma Processes by : National Aeronautics and Space Administration (NASA)
Download or read book Experimental Studies of Ionospheric Irregularities and Related Plasma Processes written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-05 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Utah State University (USU) continued its program of measuring and interpreting electron density and its variations in a variety of ionospheric conditions with the Experimental Studies of Ionospheric Irregularities and Related Plasma Processes program. The program represented a nearly ten year effort to provide key measurements of electron density and its fluctuations using sounding rockets. The program also involved the joint interpretation of the results in terms of ionospheric processes. A complete campaign summary and a brief description of the major rocket campaigns are also included. Baker, Kay D. Unspecified Center NAG5-603...
Book Synopsis A Review of Some Ionospheric Studies Based on a High-frequency Doppler Technique by :
Download or read book A Review of Some Ionospheric Studies Based on a High-frequency Doppler Technique written by and published by . This book was released on 1968 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
