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Attenuation Of High Frequency Ground Waves Over An Inhomogeneous Earth
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Book Synopsis Attenuation of High-frequency Ground Waves Over an Inhomogeneous Earth by : Rayner K. Rosich
Download or read book Attenuation of High-frequency Ground Waves Over an Inhomogeneous Earth written by Rayner K. Rosich and published by . This book was released on 1970 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of this study was to obtain theoretical estimates of the effect of inhomogeneities in the earth's surface upon ground-wave propagation along a particular set of land-sea paths.The results were obtained by numerically solving the integral equation [equation],where f* is the attenuation function for the inhomogeneous case, f is the Sommerfeld function, and g is obtained essentially from the spherical Green's function by a steepest-descent type integration. Sharp phase and amplitude changes in the attenuation function occur when crossing an "island" or inhomogeneity in the paths. The greater the difference in conductivity and dielectric constant between the island and the rest of the path, the greater are these changes. Also noted is the "recovery'' or "focusing" effect found in the amplitude and phase. The effect of moving the transmitting antenna across a coastline was also studied and the results were quite similar to the above. Computations were performed for three paths at frequencies of 10, 15, 20, and 25 MHz. The results are displayed in tabular and graphical form. This report is a revised and updated version of an earlier study (Rosich, 1968) which is now out of print.
Book Synopsis High-frequency Ground-wave Attenuation Over Inhomogeneous Paths by : Rayner K. Rosich
Download or read book High-frequency Ground-wave Attenuation Over Inhomogeneous Paths written by Rayner K. Rosich and published by . This book was released on 1968 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A New Method for Predicting HF Ground Wave Attenuation Over Inhomogeneous, Irregular Terrain by : R. H. Ott
Download or read book A New Method for Predicting HF Ground Wave Attenuation Over Inhomogeneous, Irregular Terrain written by R. H. Ott and published by . This book was released on 1971 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A New Method for Predicting HF Ground Wave Attenuation Over Inhomogeneous, Irregular Terrain by : R. H. Ott
Download or read book A New Method for Predicting HF Ground Wave Attenuation Over Inhomogeneous, Irregular Terrain written by R. H. Ott and published by . This book was released on 1971 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications by : United States. Superintendent of Documents
Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1971 with total page 1290 pages. Available in PDF, EPUB and Kindle. Book excerpt: February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index.
Book Synopsis Monthly Catalog of United States Government Publications, Cumulative Index by : United States. Superintendent of Documents
Download or read book Monthly Catalog of United States Government Publications, Cumulative Index written by United States. Superintendent of Documents and published by . This book was released on 1976 with total page 1408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis OT/ITS Research Report by : Institute for Telecommunication Sciences
Download or read book OT/ITS Research Report written by Institute for Telecommunication Sciences and published by . This book was released on 1970 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis United States Department of Commerce Publications, Catalog and Index by : United States. Department of Commerce. Library
Download or read book United States Department of Commerce Publications, Catalog and Index written by United States. Department of Commerce. Library and published by . This book was released on 1971 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis United States Department of Commerce Publications by : United States. Dept. of Commerce. Office of Publications
Download or read book United States Department of Commerce Publications written by United States. Dept. of Commerce. Office of Publications and published by . This book was released on 1965 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The United States Department of Commerce Publications, Catalog and Index Supplement by : United States. Department of Commerce
Download or read book The United States Department of Commerce Publications, Catalog and Index Supplement written by United States. Department of Commerce and published by . This book was released on 1971 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic Wave Propagation and Scattering in the Heterogenous Earth by : Haruo Sato
Download or read book Seismic Wave Propagation and Scattering in the Heterogenous Earth written by Haruo Sato and published by Springer Science & Business Media. This book was released on 2008-12-17 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seismic waves – generated both by natural earthquakes and by man-made sources – have produced an enormous amount of information about the Earth's interior. In classical seismology, the Earth is modeled as a sequence of uniform horizontal layers (or sperical shells) having different elastic properties and one determines these properties from travel times and dispersion of seismic waves. The Earth, however, is not made of horizontally uniform layers, and classic seismic methods can take large-scale inhomogeneities into account. Smaller-scale irregularities, on the other hand, require other methods. Observations of continuous wave trains that follow classic direct S waves, known as coda waves, have shown that there are heterogeneities of random size scattered randomly throughout the layers of the classic seismic model. This book focuses on recent developments in the area of seismic wave propagation and scattering through the randomly heterogeneous structure of the Earth, with emphasis on the lithosphere. The presentation combines information from many sources to present a coherent introduction to the theory of scattering in acoustic and elastic materials and includes analyses of observations using the theoretical methods developed.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1975 with total page 882 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications by :
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on with total page 1388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic Ambient Noise by : Nori Nakata
Download or read book Seismic Ambient Noise written by Nori Nakata and published by Cambridge University Press. This book was released on 2019-03-21 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive overview of seismic ambient noise, covering observations, physical origins, modelling, processing methods and applications in imaging and monitoring.
Download or read book Business Service Check List written by and published by . This book was released on 1970 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Commerce Today written by and published by . This book was released on 1971 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt:
