Download or read book Satellite Magnetic Field Mapping written by and published by . This book was released on 1961 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Satellite Magnetic Field Mapping written by James P. Heppner and published by . This book was released on 1961 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: A PRELIMINARY ANALYSIS IS MADE OF DATA FROM THE Vanguard III satellite (1959 ETA). The resulting scalar field measurements are plotted against computed values obtained from three differentANALYSES: Finch and Leaton coefficients, Jensen and Whitaker coefficients from U.S.N.H.O. charts, and Jensen and Whitaker coefficients from Russian charts. The topics discussed include: The accuracy of spherical harmonic analyses of the earth's field, possible magnetic field discontinuities associated with the inner radiation belt, and magnetic storm effects. (Author).
Download or read book The Magnetic Field of the Earth s Lithosphere written by R. A. Langel and published by Cambridge University Press. This book was released on 1998-07-13 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 1998 book documents the collection, processing and analysis of satellite magnetic field data.
Download or read book An Observational Test of Magnetospheric Magnetic Field Mapping written by and published by . This book was released on 1994 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The distortion of the geomagnetic field is a key signature of the response of the magnetosphere to the solar wind input. A number of empirical models have been devised to estimate the magnetic field direction and magnitude at any point within the magnetosphere under a variety of conditions. We describe a technique whereby the field-line mapping predicted by such models is tested by matching measurements of magnetospheric plasma energy spectra obtained by Los Alamos instruments at geosynchronous orbit with spectra obtained by instruments on the polar-orbiting DMSP satellites (at an altitude of about 800 km) at times when the two satellites are in approximate magnetic conjugacy. With up to three geosynchronous satellites and as many as four DMSP satellites in operation at any given time, there are a very large number of such two-satellite conjunctions, allowing the model mappings to be tested under a wide range of local times and geomagnetic activity. Preliminary results from the application of this technique are presented for one week of data from March, 1991.
Download or read book Contributions of Rockets and Satellites to the World Magnetic Survey written by James P. Heppner and published by . This book was released on 1961 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Worldwide Network of Digital Magnetic Observations written by R. L. Coles and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Worldwide Network of Digital Magnetic Observatories Implications for Accuracy Studies of the Earth s Deep Interior and Satellite Mapping of the Earth s Magnetic Field written by and published by . This book was released on 1990 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Note written by and published by . This book was released on 1963 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ionospheric Multi Spacecraft Analysis Tools written by Malcolm Wray Dunlop and published by Springer Nature. This book was released on 2019-10-29 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book provides a comprehensive toolbox of analysis techniques for ionospheric multi-satellite missions. The immediate need for this volume was motivated by the ongoing ESA Swarm satellite mission, but the tools that are described are general and can be used for any future ionospheric multi-satellite mission with comparable instrumentation. In addition to researching the immediate plasma environment and its coupling to other regions, such a mission aims to study the Earth’s main magnetic field and its anomalies caused by core, mantle, or crustal sources. The parameters for carrying out this kind of work are examined in these chapters. Besides currents, electric fields, and plasma convection, these parameters include ionospheric conductance, Joule heating, neutral gas densities, and neutral winds.
Download or read book Contributions of Rockets and Satellites to the World Magnetic Survey written by James P. Heppner and published by . This book was released on 1961 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mapping of the earth's magnetic field with satellites is of primary importance in the World Magnetic Survey. This importance stems not only from the operational capability to map vast regions in minimum time, but also from the capability to differentiate the causes of variations in the earth's field. Rocket and space probe measurements supplement satellite surveys in providing cross-ties for mapping and in finding the sources of field variations. For most of the survey objectives, highly accurate measurements are required. Thus, magnetometers based on nuclear or atomic resonance offer many advantages. Vanguard III, (1959 eta), with a proton precessional magnetometer, was an initial step toward field mapping with an absolute instrument. Optical pumping magnetometers now make possible continuous absolute measurements over the full range of earth field intensities with low power dissipation. The Orbiting Geophysical Observatory satellites will probably be the primary vehicles for future magnetic field surveys. These include satellites in highly eccentric orbits with small inclination, and satellites in polar orbits of low eccentricity. (Author).
Download or read book On the Problem of the Interaction Between a Satellite and the Earth s Magnetic Field written by Yu. V. Zonov and published by . This book was released on 1960 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Observational Testing of Magnetospheric Magnetic Field Models at Geosynchronous Orbit written by and published by . This book was released on 1996 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Empirical mode which estimate the magnetic field direction and magnitude at any point within the magnetosphere under a variety of conditions play an important role in space weather forecasting. We report here on a number of different studies aimed at quantitatively evaluating these models, and in particular the Tsyganenko T89a model. The models are evaluated in two basic ways: (1) by comparing the range of magnetic field tilt angles observed at geosynchronous orbit with the ranges predicted for the same locations by the models; and (2) by comparing the observed magnetic field mapping between the ionosphere and geosynchronous orbit (using two-satellite magnetic field conjunctions) with the model predictions at the same locations. We find that while the T89a model predicts reasonably well the basic variation in tilt angle with local time and permits a range of field inclinations adequate to encompass the majority of observed angles on the dawn, dusk, and night sides, it is unable to reproduce the range of inclinations on the dayside. The model also predicts a smaller magnetic latitude range of geosynchronous field line footpoints than the observed two-satellite mapping indicate. Together, these results suggest that the next generation of field models should allow a greater range of stretching, especially in local time sectors away from midnight. It is important to note, however, that any increased range should encompass less-stretched configurations: although there are certainly cases where the models are not sufficiently stretched, we find that on average all magnetic field models tested, including T89a, are too stretched. Finally, in investigating how well the observed degree of field stretch was ordered by various magnetospheric indices, we find that the tilt of the field at geosynchronous orbit is a promising candidate for the incorporation into future models.
Download or read book Atlas of the Gravity and Magnetic Fields of the Moon written by Jaroslav Klokočník and published by Springer Nature. This book was released on 2022-11-09 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents gravity aspects (gravity disturbance, Marussi tensor, two gravity invariants, their certain ratio, the strike angles, and the virtual deformations) which are computed and evaluated for the Moon, using the recent static global gravity field model (GRGM1200A) to degree and order of 600 in spherical harmonic expansion. The magnetic anomaly model and surface topography (from the LOLA mission) are added. Results are shown for the whole Moon, for its segments around the Moon and as zooms for selected impact craters, maria and catenae; they are shortly interpreted and opened for further selenologic applications. The book contains information about the geology of the Moon, together with basic information about the magnetic field, mapping and topography models.
Download or read book The World Magnetic Survey written by James P. Heppner and published by . This book was released on 1964 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Earth s Magnetic Field Its History Origin and Planetary Perspective written by McElhinny and published by Academic Press. This book was released on 1984-01-04 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Earth's Magnetic Field : Its History, Origin, and Planetary Perspective
Download or read book A Selected Listing of NASA Scientific and Technical Reports for written by and published by . This book was released on 1960 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Foundations of Geomagnetism written by George Backus and published by Cambridge University Press. This book was released on 1996-02-23 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main magnetic field of the Earth is a complex phenomenon. To understand its origins in the fluid of the Earth's core, and how it changes in time requires a variety of mathematical and physical tools. This book presents the foundations of geomagnetism, in detail and developed from first principles. The book is based on George Backus' courses for graduate students at the University of California, San Diego. The material is mathematically rigorous, but is logically developed and has consistent notation, making it accessible to a broad range of readers. The book starts with an overview of the phenomena of interest in geomagnetism, and then goes on to deal with the phenomena in detail, building the necessary techniques in a thorough and consistent manner. Students and researchers will find this book to be an invaluable resource in the appreciation of the mathematical and physical foundations of geomagnetism.
