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:
Download or read book An Analysis of Sudden Ionospheric Disturbances Associated with the Proton Flare of 1522 UT August 28 1966 written by Richard Frank Donnelly and published by . This book was released on 1968 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 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 Sudden Ionospheric Disturbances and the Propagation of Very low frequency Radio Waves written by Edward T. Pierce and published by . This book was released on 1963 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: The changes in VLF radio noise accompanying a solar flare and its associated sudden ionospheric disturbance (SID) are surveyed. The onset time of the effects is about 10 minutes, but may be less than 2 minutes for perhaps 5 percent of the incidents. The alteration in propagation conditions implies an increase in noise on frequencies exceeding 20 kc and a decrease below 10 kc. If a local thunderstorm develops, the time phasing is very similar to that of an SID incident, but noise at all frequencies is enhanced. A detailed examination of the formative processes of the lower ionosphere is made. Values of the rate coefficients for attachement, detachment (photo, collisional, and associative), electron-ion recombination, and ion-ion recombination, are deduced for heights from 40 to 100 km. The balance equations for the lower ionosphere are solved for the cases of equilibrium conditions and of the departure from equilibrium associated with the approach of night. Two specific examples indicate that contours of electron density, and therefore of ionospheric conductivity, are far from parallel to the surface of the earth. It follows that the attenuation coefficient for VLF propagation by day can differ according to the solar zenith angle by as much as 20% from the mean daytime value. (Author).
Download or read book Ionospheric Effects of Solar Flares written by A. P. Mitra and published by . This book was released on 1974 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Listing of Sudden Ionospheric Disturbances IGY IGC written by J. Virginia Lincoln and published by . This book was released on 1966 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Analysis of Sudden Ionospheric Disturbances Associated with the Proton Flare of 1522 UT August 28 1966 written by Richard Frank Donnelly and published by . This book was released on 1968 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 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 Observation of Traveling Ionospheric Disturbances by the Doppler Technique with Spaced Transmitters written by John Emory Jones and published by . This book was released on 1969 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes a radio investigation of traveling ionospheric disturbances carried out near Boulder, Colorado, over a 1-year period from June 1967 to June 1968. The three-dimensional motions of F2 layer disturbances were measured by the high frequency Doppler technique with spaced transmitters and at several probing frequencies. Horizontal motions were determined by cross-correlating three signals on frequencies near 5 MHz, whose reflection points were approximately at the corners of a horizontal equilateral triangle with 40-km sides. Vertical motions were determined from cross-correlation of signals on frequencies of 3.3, 4.0, and 5.1 MHz, whose reflection points were aligned vertically.
Download or read book Solar Activity written by J. Virginia Lincoln and published by . This book was released on 1963 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ionospheric Effects of Solar Flares written by Hermine Vloemans and published by . This book was released on 1974-12-31 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
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:
Download or read book Statistical Characteristics of Sudden Ionospheric Disturbances written by A. P. Mitra and published by . This book was released on 1965 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:
