Download or read book On the Detection of Sudden Ionospheric Disturbances written by A. Glenn Jean and published by . This book was released on 1969 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comparison was made of sudden ionospheric disturbances (SIDs) reported in IER-FB Solar-Geophysical Data and SIDs detected at Boulder, Colorado, by project HANDS in February 1967. The FB reports were collected from single experiments. One of the main problems in the comparison was the relatively large spread in the times of SIDs reported to FB, and factors contributing to this spread in time are discussed. Some advantages in the collocated experiment system are shown to be 1) considerably reduced spread in starting times of SID signatures, 2) high detection sensitivity due to the ability to identify small but simultaneous perturbations in parallel data channels, 3) high level of confidence of SID observed in three or more data channels. Based on these findings, a suggestion is made for improving the SID detection and reporting through the addition of a uniform set of phase coherent equipment at three or more stations spaced around the earth to provide continuous SID monitoring.

Download or read book On the Detection of Sudden Ionospheric Disturbances written by A. Glenn Jean and published by . This book was released on 1969 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comparison was made of sudden ionospheric disturbances (SIDs) reported in IER-FB Solar-Geophysical Data and SIDs detected at Boulder, Colorado, by project HANDS in February 1967. The FB reports were collected from single experiments. One of the main problems in the comparison was the relatively large spread in the times of SIDs reported to FB, and factors contributing to this spread in time are discussed. Some advantages in the collocated experiment system are shown to be 1) considerably reduced spread in starting times of SID signatures, 2) high detection sensitivity due to the ability to identify small but simultaneous perturbations in parallel data channels, 3) high level of confidence of SID observed in three or more data channels. Based on these findings, a suggestion is made for improving the SID detection and reporting through the addition of a uniform set of phase coherent equipment at three or more stations spaced around the earth to provide continuous SID monitoring.

Download or read book On the Detection of Sudden Ionospheric Disturbances written by A. Glenn Jean and published by . This book was released on 1968 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comparison was made of sudden ionospheric disturbances (SIDs) reported in IER-FB Solar-Geophysical Data and SIDs detected at Boulder, Colorado, by project HANDS in February 1967. The FB reports were collected from single experiments. One of the main problems in the comparison was the relatively large spread in the times of SIDs reported to FB, and factors contributing to this spread in time are discussed. Some advantages in the collocated experiment system are shown to be 1) considerably reduced spread in starting times of SID signatures, 2) high detection sensitivity due to the ability to identify small but simultaneous perturbations in parallel data channels, 3) high level of confidence of SID observed in three or more data channels. Based on these findings, a suggestion is made for improving the SID detection and reporting through the addition of a uniform set of phase coherent equipment at three or more stations spaced around the earth to provide continuous SID monitoring.

Download or read book Instruction Manual for Indirect Flare Detection Or the Reporting of Sudden Ionospheric Disturbances written by Boulder Laboratories (U.S.) and published by . This book was released on 1957 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A System for the Detection of Certain Ionospheric Disturbances written by Steven Bernstein and published by . This book was released on 1964 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Characteristics of Traveling Ionospheric Disturbances from Incoherent Scatter Data written by Panasenko S.v. and published by . This book was released on 2021-06-20 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph describes the results of detection of traveling ionospheric disturbances and their parameters estimation based on long-term observations using Kharkiv incoherent scatter radar. For a couple of events, the data of other incoherent scatter radars were employed for comparative analysis. The book reports the results of traveling ionospheric disturbance observations during high energy natural and artificial sources.The book will be useful for scientific researchers, lecturers, PhD and undergraduate students working and studying in the field of electrical and electronic engineering, space and planetary science, atmospheric science, statistical and nonlinear physics, and geophysics.

Download or read book Improvement in Short Wave Fade Detection written by David N. Gaunt and published by . This book was released on 1975 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Certain types of solar emission produce changes in the ionosphere (identified by Short Wave Fades (SWF)) that adversely affect the efficiency of radio communications. The detection of SWF is in principle a relatively simple approach to the measurement of ionospheric changes and the causative solar emissions. In practice, however, numerous factors may compromise the value of SWF data. An improved Short Wave Fade detection system is described which by techniques of frequency sweeping, reduction of unwanted signals by clipping, and enhancement of desired information by integration makes reliable, quantitative, absorption, and spectral information possible.

Download or read book Extreme Events in Geospace written by Natalia Buzulukova and published by Elsevier. This book was released on 2017-12-01 with total page 798 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extreme Events in Geospace: Origins, Predictability, and Consequences helps deepen the understanding, description, and forecasting of the complex and inter-related phenomena of extreme space weather events. Composed of chapters written by representatives from many different institutions and fields of space research, the book offers discussions ranging from definitions and historical knowledge to operational issues and methods of analysis. Given that extremes in ionizing radiation, ionospheric irregularities, and geomagnetically induced currents may have the potential to disrupt our technologies or pose danger to human health, it is increasingly important to synthesize the information available on not only those consequences but also the origins and predictability of such events. Extreme Events in Geospace: Origins, Predictability, and Consequences is a valuable source for providing the latest research for geophysicists and space weather scientists, as well as industries impacted by space weather events, including GNSS satellites and radio communication, power grids, aviation, and human spaceflight. The list of first/second authors includes M. Hapgood, N. Gopalswamy, K.D. Leka, G. Barnes, Yu. Yermolaev, P. Riley, S. Sharma, G. Lakhina, B. Tsurutani, C. Ngwira, A. Pulkkinen, J. Love, P. Bedrosian, N. Buzulukova, M. Sitnov, W. Denig, M. Panasyuk, R. Hajra, D. Ferguson, S. Lai, L. Narici, K. Tobiska, G. Gapirov, A. Mannucci, T. Fuller-Rowell, X. Yue, G. Crowley, R. Redmon, V. Airapetian, D. Boteler, M. MacAlester, S. Worman, D. Neudegg, and M. Ishii. Helps to define extremes in space weather and describes existing methods of analysis Discusses current scientific understanding of these events and outlines future challenges Considers the ways in which space weather may affect daily life Demonstrates deep connections between astrophysics, heliophysics, and space weather applications, including a discussion of extreme space weather events from the past Examines national and space policy issues concerning space weather in Australia, Canada, Japan, the United Kingdom, and the United States

Download or read book An Analysis of Sudden Ionospheric Disturbances Associated with the Proton Flare of 0026 UT July 7 1966 written by Richard Frank Donnelly and published by . This book was released on 1968 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Determination of Ionospheric Loss Coefficients from Observations on Satellite X ray Fluxes and Sudden Ionospheric Disturbances written by Ashesh P. Mitra and published by . This book was released on 1965 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Use has been made of recent satellite measurements of solar flare X-ray flux, and where available its spectral distribution, for detailed quantitative examination of the accompanying Sudden Ionospheric Disturbances, principally Sudden Cosmic Noise Absorption (SCNA). From observed or assumed spectral distributions of the X-ray flux, profiles of ion production rates are obtained for a few specific events. A comparison of these production rates with the observed excess attenuation during the peak of the SCNA leads to an upper limit for the value of the effective dissociative recombination coefficient alpha sub c when negative ions are ignored. These limiting values were found to range between 0.0000001 to 0.000001 cc/s. When the effect of negative ions is considered, alpha sub c is reduced to values around (1-4) x 10 to the minus 8th power cc/s. An extension of the above method involves the simultaneous use of SCNAs and SPAs at very low frequencies, along with X-ray spectral data. When this is done, it is possible to obtain information on both the dissociative recombination coefficient and negative ions. (Author).

Download or read book Space Physics and Aeronomy Ionosphere Dynamics and Applications written by Chao Huang and published by John Wiley & Sons. This book was released on 2021-05-11 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive review of global ionospheric research from the polar caps to equatorial regions It's more than a century since scientists first identified the ionosphere, the layer of the Earth’s upper atmosphere that is ionized by solar and cosmic radiation. Our understanding of this dynamic part of the near-Earth space environment has greatly advanced in recent years thanks to new observational technologies, improved numerical models, and powerful computing capabilities. Ionosphere Dynamics and Applications provides a comprehensive overview of historic developments, recent advances, and future directions in ionospheric research. Volume highlights include: Behavior of the ionosphere in different regions from the poles to the equator Distinct characteristics of the high-, mid-, and low-latitude ionosphere Observational results from ground- and space-based instruments Ionospheric impacts on radio signals and satellite operations How earthquakes and tsunamis on Earth cause disturbances in the ionosphere 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 Detection and Classification of Solar X ray Flares Using VLF Phase and Amplitude Information written by Paul A. Kossey and published by . This book was released on 1974 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: An extensive data base consisting of VLF records for 130 different propagation paths over a 2-year period was analyzed statistically to study the correlation of VLF propagation changes with solar X-ray events recorded by satellites. Results of the study indicate that with reasonable restrictions on path illumination conditions, it is possible to detect and classify solar X-ray flares, in near realtime, by proper interpretation of VLF phase and amplitude variations. A method of calibrating VLF paths for this purpose is discussed, and a possible global network of receiving stations capable of 24-hr per day monitoring of solar X-rays is described.

Download or read book Observations of Acoustic Waves in the Ionosphere Following Nuclear Explosions written by Donald M. Baker and published by . This book was released on 1968 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Infrasound Monitoring for Atmospheric Studies written by Alexis Le Pichon and published by Springer Science & Business Media. This book was released on 2010-01-19 with total page 739 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of infrasound to monitor the atmosphere has, like infrasound itself, gone largely unheard of through the years. But it has many applications, and it is about time that a book is being devoted to this fascinating subject. Our own involvement with infrasound occurred as graduate students of Prof. William Donn, who had established an infrasound array at the Lamont-Doherty Geological Observatory (now the Lamont-Doherty Earth Observatory) of Columbia University. It was a natural outgrowth of another major activity at Lamont, using seismic waves to explore the Earth’s interior. Both the atmosphere and the solid Earth feature velocity (seismic or acoustic) gradients in the vertical which act to refract the respective waves. The refraction in turn allows one to calculate the respective background structure in these mediums, indirectly exploring locations that are hard to observe otherwise. Monitoring these signals also allows one to discover various phenomena, both natural and man-made (some of which have military applications).

Download or read book Detection Drift Velocity Estimation and Characteristics Analysis of Ionospheric Disturbance Over Hong Kong written by Ziwei He and published by . This book was released on 2013 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reporting of Sudden Ionospheric Disturbances written by J. Virginia Lincoln and published by . This book was released on 1963 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book On the Behaviour of the Ionosphere During Sudden Ionospheric Disturbances written by N. A. Savitch and published by . This book was released on 1959 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: