Derivation Of A Self Consistent Auroral Oval Model Using The Auroral Boundary Index

Author : Keith A. Anderson
Publisher : Unknown
Page : 110 pages
File Size : 49,8 Mb
Release : 2004-06-01
Category : Auroras
ISBN : 1423519205

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Derivation of a Self-Consistent Auroral Oval Model Using the Auroral Boundary Index by Keith A. Anderson Pdf

The position and intensity of the auroral oval has many implications for the Air Force from determining the effects of incoming electron flux on DoD systems to modeling the ionosphere to exploit current HF communications capabilities. The auroral morphology is a good indicator of the level at which space weather and its near-Earth consequences are occurring, and thus it is important to develop an auroral prediction model. However, since no purely physics-based models exist to describe the temporal and spatial evolution of the auroral zone, space weather practitioners and researchers are forced to produce statistical representations, "organized" by some relevant geophysical parameter. Currently, the most widely used model is the Hardy et al. (1985) auroral oval model, which is binned according to the Kp index. The Kp index is a mid-Iatitude measure of planetary geomagnetic activity, and was presumed to be well- correlated to the size and shape of the auroral region. However, subsequent research has shown that Kp is probably not the best binning parameter. This study used the Auroral Boundary Index (ABI) to parameterize the statistics of the auroral oval location since it is a measurement of the electron fluxes computed directly from sensors aboard the DMSP satellites. Thus, the current work represents a move toward a more self- consistent-and presumably more accurate-climatological representation of the auroral oval boundaries. This was accomplished by recreating the process performed by Hardy et al., substituting the ABI for the Kp index and deriving an entirely new set of auroral ovals based on almost 11 years ofDMSP data from the F8 and F9 satellites. To quantitatively assess the differences between the two models, electron flux values were compared to actual DMSP data of individual satellite passes. Preliminary findings suggest that the new ABI auroral ov

Author : Anonim
Publisher : Unknown
Page : 1572 pages
File Size : 45,6 Mb
Release : 1992
Category : Aeronautics
ISBN : UIUC:30112078757413

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Scientific and Technical Aerospace Reports by Anonim Pdf

Author : Charles R. Chappell,Robert W. Schunk,Peter M. Banks,Richard M. Thorne,James L. Burch
Publisher : John Wiley & Sons
Page : 414 pages
File Size : 41,5 Mb
Release : 2016-09-23
Category : Science
ISBN : 9781119066873

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Magnetosphere-Ionosphere Coupling in the Solar System by Charles R. Chappell,Robert W. Schunk,Peter M. Banks,Richard M. Thorne,James L. Burch Pdf

Over a half century of exploration of the Earth’s space environment, it has become evident that the interaction between the ionosphere and the magnetosphere plays a dominant role in the evolution and dynamics of magnetospheric plasmas and fields. Interestingly, it was recently discovered that this same interaction is of fundamental importance at other planets and moons throughout the solar system. Based on papers presented at an interdisciplinary AGU Chapman Conference at Yosemite National Park in February 2014, this volume provides an intellectual and visual journey through our exploration and discovery of the paradigm-changing role that the ionosphere plays in determining the filling and dynamics of Earth and planetary environments. The 2014 Chapman conference marks the 40th anniversary of the initial magnetosphere-ionosphere coupling conference at Yosemite in 1974, and thus gives a four decade perspective of the progress of space science research in understanding these fundamental coupling processes. Digital video links to an online archive containing both the 1974 and 2014 meetings are presented throughout this volume for use as an historical resource by the international heliophysics and planetary science communities. Topics covered in this volume include: Ionosphere as a source of magnetospheric plasma Effects of the low energy ionospheric plasma on the stability and creation of the more energetic plasmas The unified global modeling of the ionosphere and magnetosphere at the Earth and other planets New knowledge of these coupled interactions for heliophysicists and planetary scientists, with a cross-disciplinary approach involving advanced measurement and modeling techniques Magnetosphere-Ionosphere Coupling in the Solar System is a valuable resource for researchers in the fields of space and planetary science, atmospheric science, space physics, astronomy, and geophysics. Read an interview with the editors to find out more: https://eos.org/editors-vox/filling-earths-space-environment-from-the-sun-or-the-earth

Author : Yohsuke Kamide,Abraham C.-L. Chian
Publisher : Springer Science & Business Media
Page : 539 pages
File Size : 40,5 Mb
Release : 2007-08-02
Category : Science
ISBN : 9783540463146

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Handbook of the Solar-Terrestrial Environment by Yohsuke Kamide,Abraham C.-L. Chian Pdf

As a star in the universe, the Sun is constantly releas- cover a wide range of time and spatial scales, making ?? ing energy into space, as much as ?. ? ?? erg/s. Tis observations in the solar-terrestrial environment c- energy emission basically consists of three modes. Te plicated and the understanding of processes di?cult. ?rst mode of solar energy is the so-called blackbody ra- In the early days, the phenomena in each plasma diation, commonly known as sunlight, and the second region were studied separately, but with the progress mode of solar electromagnetic emission, such as X rays of research, we realized the importance of treating and UV radiation, is mostly absorbed above the Earth’s the whole chain of processes as an entity because of stratosphere. Te third mode of solar energy emission is strong interactions between various regions within in the form of particles having a wide range of energies the solar-terrestrial system. On the basis of extensive from less than ? keV to more than ? GeV. It is convenient satellite observations and computer simulations over to group these particles into lower-energy particles and thepasttwo decades, it hasbecomepossibleto analyze higher-energy particles, which are referred to as the so- speci?cally the close coupling of di?erent regions in the lar wind and solar cosmic rays, respectively. solar-terrestrial environment.

Author : Anonim
Publisher : Unknown
Page : 514 pages
File Size : 47,6 Mb
Release : 1997
Category : Aeronautics
ISBN : UOM:39015039967677

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International Aerospace Abstracts by Anonim Pdf

Author : J.A. Holtet,A. Egeland
Publisher : Springer Science & Business Media
Page : 444 pages
File Size : 43,5 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401110525

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Physical Signatures of Magnetospheric Boundary Layer Processes by J.A. Holtet,A. Egeland Pdf

Summary of the NATO Advanced Research Workshop on Physical Signatures of Magnetospheric Boundary Layer Processes T A POTEMRA, M I PUDOVKIN, R W SMITH, V M VASYLIUNAS and A EGELAND 451 PREFACE These proceedings are based on the invited talks and selected research reports presented at the NATO Advanced Workshop on "PHYSICAL SIGNATURES OF MAGNETOSPHERIC BOUNDARY LAYER PROCESSES", held at Sundvolden Hotel, Norway, 9.-14.May 1993. The international political and scientific communities have gradually realized that the Earth's environment is more fragile than previously believed. This has led to the establishment of international research programmes directed toward the understanding of "Global Change". The Earth's magnetosphere, "the Earth-space", is a part of our environment, and physical processes in the magnetosphere and coupling between the solar energy stream, the solar wind, and the Earth-space are important in the complete understanding of our environment. Variations in the electromagnetic and particle energy output of the Sun have a significant effect on global changes. The energy transfer mechanisms at the days ide magnetospheric boundary layers and their ionospheric signatures are perhaps even more important to solar terrestrial research than the night-side processes in this connection. The dayside boundary layers and the polar cusps are the Earth's windows to outer space. The present NATO ARW was the latest in a series of conferences focused on dayside magnetospheric phenomena. It is five years since the preceding Workshop on "Electromag netic Coupling in the Polar Clefts and Caps" was held at Lillehammer in September 1988.

Author : Anonim
Publisher : Unknown
Page : 964 pages
File Size : 47,5 Mb
Release : 1976
Category : Nuclear energy
ISBN : UOM:39015026174212

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Nuclear Science Abstracts by Anonim Pdf

Author : C.S. Deehr,J.A. Holtet
Publisher : Springer Science & Business Media
Page : 507 pages
File Size : 46,5 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400984172

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Exploration of the Polar Upper Atmosphere by C.S. Deehr,J.A. Holtet Pdf

This book is an ordered collection of tutorial lectures on the physical processes in the polar upper atmosphere given at the NATO Advanced Study Institute (ASI) on "The Exploration of the Polar Upper Atmosphere" held at Lillehammer, Norway, May 5-16, 1980. The polar cap is an important part of the high latitude atmosphere not only because of circulation and horizontal trans port in the neutral atmosphere and convection in the ionosphere, but also because of its unique energy sources and sinks. In addition, solar wind plasma is led into-the upper atmosphere by the geomagnetic field at the poles, and the polar cap is, as stated by Tutorial Leader Roederer in this volume, "the place where outer space meets earth". The atmosphere at lower latitudes is well-known to the ground-based observer, and the advent of satellite observations was simply the beginning of a new perspective. The exploration of the atmosphere at polar latitudes, however, proceeded in quite the opposite manner, and satellite maps of the polar caps may be compared with a relatively meagre set of ground-based data. Recent efforts to extend the polar observations from the ground have resulted in the need for a review of the physical principles and processes occurring in the polar upper atmosphere. The interdisciplinary nature of these efforts led to the emphasis here on a tutorial program.

Author : Anonim
Publisher : Unknown
Page : 468 pages
File Size : 47,7 Mb
Release : 2009
Category : Astrophysics
ISBN : UOM:39015085198797

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Annales Geophysicae by Anonim Pdf

An international, multi- and interdisciplinary scientific journal of original articles and of short communications in the following fields: physics and dynamics of the oceans and seas, incl. oceanography and marine sciences; air-sea and air-land-vegetation interactions, incl. physical, chemical and biological processes; modelling and remote sensing of oceans, atmospheres and climate; physics, dynamics and chemistry of the lower, middle and upper atmosphere of the Earth, incl. meteorology and climatology; physics of ionosphere and magnetosphere of the Earth, incl. solarterrestrial relations, geomagnetism and magnetic activity; interplanetary and heliospheric physics, incl. solar wind, energetic particles and radiation belts of the Earth; physics and dynamics of the solar atmosphere, incl. chromosphere and corona, emissions and magnetic activity; space plasma physics and active experiments in space.

Author : Andreas Keiling
Publisher : John Wiley & Sons
Page : 325 pages
File Size : 54,6 Mb
Release : 2024-04-02
Category : Science
ISBN : 9781394195961

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Alfvén Waves Across Heliophysics by Andreas Keiling Pdf

Alfvén Waves Across Heliophysics Progress, Challenges, and Opportunities Alfvén waves are fundamental to the dynamics of space plasmas. Recent advances in our knowledge about Alfvén waves have come from several directions, including new space missions to unexplored heliospheric regions, sophisticated rocket campaigns in the auroral zone, enlarged magnetometer arrays and radar networks, and significant advances in computer modeling. Alfvén Waves Across Heliophysics: Progress, Challenges, and Opportunities is an interdisciplinary collaboration from different space science communities to review recent and current Alfvén wave research. Volume highlights include: Alfvén waves in the solar atmosphere Alfvén waves at the giant planets Alfvén waves at Mars Alfvén waves in moon-magnetosphere systems Alfvén waves in geospace Alfvén waves in the laboratory The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals.

Author : Anonim
Publisher : Unknown
Page : 510 pages
File Size : 52,8 Mb
Release : 2005
Category : Astrophysics
ISBN : UOM:39015058984512

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Journal of Geophysical Research by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 916 pages
File Size : 54,7 Mb
Release : 1979
Category : Atmospheric chemistry
ISBN : UOM:39015034725039

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Meteorological and Geoastrophysical Abstracts by Anonim Pdf

Author : Astronomisches Rechen-Institut
Publisher : Springer Science & Business Media
Page : 1308 pages
File Size : 44,5 Mb
Release : 2013-06-29
Category : Science
ISBN : 9783662123676

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Literature 1988, Part 2 by Astronomisches Rechen-Institut Pdf

From the reviews: "Astronomy and Astrophysics Abstracts has appeared in semi-annual volumes since 1969 and it has already become one of the fundamental publications in the fields of astronomy, astrophysics and neighbouring sciences. It is the most important English-language abstracting journal in the mentioned branches. ...The abstracts are classified under more than a hundred subject categories, thus permitting a quick survey of the whole extended material. The AAA is a valuable and important publication for all students and scientists working in the fields of astronomy and related sciences. As such it represents a necessary ingredient of any astronomical library all over the world." Space Science Reviews#1 "Dividing the whole field plus related subjects into 108 categories, each work is numbered and most are accompanied by brief abstracts. Fairly comprehensive cross-referencing links relevant papers to more than one category, and exhaustive author and subject indices are to be found at the back, making the catalogues easy to use. The series appears to be so complete in its coverage and always less than a year out of date that I shall certainly have to make a little more space on those shelves for future volumes." The Observatory Magazine#2

Author : Anonim
Publisher : Unknown
Page : 1692 pages
File Size : 43,7 Mb
Release : 1994
Category : Government reports announcements & index
ISBN : WISC:89053811832

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Government Reports Annual Index by Anonim Pdf

Author : American Geophysical Union. Meeting
Publisher : Unknown
Page : 420 pages
File Size : 52,8 Mb
Release : 2002
Category : Geophysics
ISBN : CHI:62547924

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Spring Meeting by American Geophysical Union. Meeting Pdf