Elementary Theoretical Forms For The Spatial Power Spectrum Of Earth S Crustal Magnetic Field
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Elementary Theoretical Forms For The Spatial Power Spectrum Of Earth S Crustal Magnetic Field
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Author : C. Voorhies
language : en
Publisher:
Release Date : 1998
Elementary Theoretical Forms For The Spatial Power Spectrum Of Earth S Crustal Magnetic Field written by C. Voorhies and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Earth sciences categories.
Elementary Theoretical Forms For The Spatial Power Spectrum Of Earth S Crustal Magnetic Field
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-07-02
Elementary Theoretical Forms For The Spatial Power Spectrum Of Earth S Crustal Magnetic Field written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-02 with categories.
The magnetic field produced by magnetization in Earth's crust and lithosphere can be distinguished from the field produced by electric currents in Earth's core because the spatial magnetic power spectrum of the crustal field differs from that of the core field. Theoretical forms for the spectrum of the crustal field are derived by treating each magnetic domain in the crust as the point source of a dipole field. The geologic null-hypothesis that such moments are uncorrelated is used to obtain the magnetic spectrum expected from a randomly magnetized, or unstructured, spherical crust of negligible thickness. This simplest spectral form is modified to allow for uniform crustal thickness, ellipsoidality, and the polarization of domains by an periodically reversing, geocentric axial dipole field from Earth's core. Such spectra are intended to describe the background crustal field. Magnetic anomalies due to correlated magnetization within coherent geologic structures may well be superimposed upon this background; yet representing each such anomaly with a single point dipole may lead to similar spectral forms. Results from attempts to fit these forms to observational spectra, determined via spherical harmonic analysis of MAGSAT data, are summarized in terms of amplitude, source depth, and misfit. Each theoretical spectrum reduces to a source factor multiplied by the usual exponential function of spherical harmonic degree n due to geometric attenuation with attitude above the source layer. The source factors always vary with n and are approximately proportional to n(exp 3) for degrees 12 through 120. The theoretical spectra are therefore not directly proportional to an exponential function of spherical harmonic degree n. There is no radius at which these spectra are flat, level, or otherwise independent of n. Voorhies, C. Goddard Space Flight Center RTOP 579-31-07; RTOP 579-31-08; RTOP 670-72-03...
Monthly Catalog Of United States Government Publications
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Author :
language : en
Publisher:
Release Date : 2000
Monthly Catalog Of United States Government Publications written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Government publications categories.
Journal Of Research Of The National Bureau Of Standards
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Author : United States. National Bureau of Standards
language : en
Publisher:
Release Date : 1962
Journal Of Research Of The National Bureau Of Standards written by United States. National Bureau of Standards and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Chemistry categories.
Nuclear Science Abstracts
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Author :
language : en
Publisher:
Release Date : 1973
Nuclear Science Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Nuclear energy categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1994
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Aeronautics categories.
Physics Briefs
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Author :
language : en
Publisher:
Release Date : 1994
Physics Briefs written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Physics categories.
Soviet Physics Jetp
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Author :
language : en
Publisher:
Release Date : 1972
Soviet Physics Jetp written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Electronic journals categories.
The Magnetic Field Of The Earth S Lithosphere
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Author : R. A. Langel
language : en
Publisher: Cambridge University Press
Release Date : 2011-04-28
The Magnetic Field Of The Earth S Lithosphere written by R. A. Langel and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-04-28 with Science categories.
Many geological features of the Earth's lithosphere create variations in the Earth's magnetic field that can be detected by satellites. The resulting magnetic anomaly maps can provide new insights into the tectonic features and broad structures of the lithosphere. This book documents the acquisition, reduction and analysis of satellite magnetic field data in the study of the Earth's lithosphere. The text considers issues of interpreting data, summarizes various interpretation methods, considers rock magnetism concepts and sources of variation in magnetism, and provides a complete summary of published maps and the methods used to create them. Mapping and interpreting lithospheric fields from satellite magnetic data has resulted in the new subdiscipline of geomagnetism. Advanced students and researchers will find that The Magnetic Field of the Earth's Lithosphere provides a much needed review of this important topic.
The Magnetotelluric Method
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Author : Alan D. Chave
language : en
Publisher: Cambridge University Press
Release Date : 2012-04-26
The Magnetotelluric Method written by Alan D. Chave and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-04-26 with Science categories.
A rigorous introduction to magnetotelluric imaging of Earth's electrical conductivity and structure, for researchers, advanced students and industrial practitioners.