A Study of the Morphology of Geomagnetic Storms

A Study of the Morphology of Geomagnetic Storms

Author: Masahisa Sugiura

Publisher:

Published: 1961

Total Pages: 54

ISBN-13:

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The verage morphology of magnetic storms with sudden commencement was studied with 346 magn tic storms that occurred in the years 1902 to 1945. Magnetic recor from 26 observatories were used. The 346 storms were classed into three intensity groups of great, moderate and weak storms, and their morphology was investig ted s par t ly S OR VARI TION WAS ANALYZED INTO WO PARTS, Dst and DS. DS was naly ed harmonically, and its changes with storm time were studied in great detail. The author's present views on stor sudden commencements and on the b ormal nature of t e storm variations at the geomagnetic equator are briefly reviewed. (Author).


The Morphology of Ionospheric F-Region Storms at Middle and Low Latitudes

The Morphology of Ionospheric F-Region Storms at Middle and Low Latitudes

Author: William F. McCullough

Publisher:

Published: 1972

Total Pages: 143

ISBN-13:

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The dependence of the onset time of the F-region electron density disturbance upon the local time of the geomagnetic storm commencement and main phase onset was investigated. Hourly value of the fractional deviations of foF2 from monthly median values at a world-wide network of ionosonde stations were examined during 29 geomagnetic storms occurring between July 1957 and December 1964 with main phase onset time lags of more than 2 hours and K-indices at Fredericksburg of t or greater. The relationship between the relative equatorial electrojet strength and the time rate of change of foF2 above Huancayo was investigated during eight geomagnetic storms. The structural morphology of the equatorial anomaly during two geomagnetic storms was also investigated. (Author).


Morphology and Dynamics of Ionospheric Storms

Morphology and Dynamics of Ionospheric Storms

Author: S. V. Venkateswaran

Publisher:

Published: 1973

Total Pages: 346

ISBN-13:

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The document consists of five scientific reports. In the first report, computer programs are described which simulate ionospheric currents responsible for quiet-day ground magnetic variations at middle and equatorial geomagnetic latitudes. The program enables us to deduce the large-scale electrostatic fields generated by dynamo actions in the ionosphere. The second report describes a computer program for mapping of the ground magnetic potential pattern on any given day, either quiet or disturbed. The other reports are reprints of articles which have been either fully or partially supported by this contract. (Author).


Ionospheric Space Weather

Ionospheric Space Weather

Author: Ljiljana R. Cander

Publisher: Springer

Published: 2018-09-15

Total Pages: 301

ISBN-13: 3319993313

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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.


Global Morphology of Ionospheric Scintillations II

Global Morphology of Ionospheric Scintillations II

Author: Jules Aarons

Publisher:

Published: 1975

Total Pages: 30

ISBN-13:

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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.