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4 edition of Empirical modeling of the quiet time nightside magnetosphere found in the catalog.

Empirical modeling of the quiet time nightside magnetosphere

Empirical modeling of the quiet time nightside magnetosphere

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Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, D.C, Springfield, Va .
Written in English


Edition Notes

StatementA.T.Y. Lui, H.E. Spence, D.P. Stern.
Series[NASA contractor report] -- NASA CR-199339., NASA contractor report -- NASA CR-199339.
ContributionsSpence, H. E., Stern, D. P., United States. National Aeronautics and Space Administration.
The Physical Object
FormatMicroform
Pagination1 v.
ID Numbers
Open LibraryOL17067410M
OCLC/WorldCa34696272

nance of the quiet-time data. [7] The purpose of this work is to fill in that gap by developing an empirical model of a strongly disturbed magnetosphere based on a new set of data comprising 37 storms during the period – To properly represent the storm-time changes of the magnetospheric magnetic. Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume As we become a space-faring culture, there is an increasing need for reliable methods to forecast the dynamics of electromagnetic fields, thermal plasma, and energetic particles in the geospace environment, as all these factors affect satellite-borne systems. From the electrodynamics viewpoint.

The particularity of the Olson and Pfitzer () quiet model is that it does not take any parameter as input except the tilt (and obviously the location), so basically it is more dedicated to quiet time utilization. This model uses a sixth-order power series expansion and exponential terms in posi-tion and tilt. Olson-Pfitzer quiet This is an analytical model [Olson and Pfitzer, ] of the Earth's magnetic field valid from the dayside subsolar magnetosphere to beyond lunar orbit in the nightside magnetotail. Only the quiet time magnetosphere is represented including the .

Page A1. THE MAGNETOSPHERE, IONOSPHERE, AND ATMOSPHERE. Appendix A1 was largely developed by the following workshop group: James Slavin (Group Leader), R. Clauer, M. Engebretson, D. Herzog, R. McPherron, J. Olson, V. Papitashvili, V. Patel, F. Rich, A. Richmond, M. Teague, R. Walker, L. Zanetti.A complete and accurate knowledge of the geomagnetic field and how it changes with time is. Empirical Modeling of the Plasmasphere Dynamics Kabirzadeh, R, Very low frequency radio waves in the magnetosphere, Paper 4 in Upper Atmosphere Research in Antarctica: Upper Atmosphere Research in Antarctica: PDF: Quiet time patterns and some substorm effects.


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Empirical modeling of the quiet time nightside magnetosphere Download PDF EPUB FB2

Empirical modeling of plasma pressure and magnetic field for the quiet time nightside magnetosphere is investigated. Two models are constructed for this study. One model, referred to here as T89R, is basically the magnetic field model of Tsyganenko () but is modified by the addition of an inner eastward ring current at a radial distance of ∼3 R E as suggested by observation.

The other is a combination of Cited by: Empirical modeling of plasma pressure and magnetic field for the quiet time nightside magnetosphere is investigated.

Two models are constructed for this study. One model, referred to here as T89R, is basically the magnetic field model of Tsyganenko () but is modified by the addition of an inner eastward ring current at a radial distance of approximately 3 RE as suggested by : A.

Lui, H. Spence, D. Stern. Empirical modeling of plasma pressure and magnetic field for the quiet time nightside magnetosphere is investigated. Two models are constructed for this study. One model, referred to here as T89R, is basically the magnetic field model of Tsyganenko [] but is modified by the.

Empirical modeling of plasma pressure and magnetic field for the quiet time nightside magnetosphere is investigated.

Two models are constructed for this study. One model, referred to here as T89R, is basically the magnetic field model of Tsyganenko () but is modified by the addition of an inner eastward ring current at a radial distance of ∼3 RE as suggested by by: Get this from a library.

Empirical modeling of the quiet time nightside magnetosphere. [A T Y Lui; H E Spence; David P Stern; United States. National Aeronautics and Space Administration.]. Empirical modeling of plasma pressure and magnetic field for the quiet time nightside magnetosphere is investigated.

Two models are constructed for this study. One model, referred to here as T89R, is basically the magnetic field model of Tsyganenko () but is modified by the addition of an inner eastward ring current at a radial distance of approximately 3 R(sub E) as suggested by : A. Lui, H. Spence and D.

Stern. A dynamical empirical model of the near-geosynchronous magnetic field has been constructed, based on a recently developed radial basis functions approach and a multiyear set of spacecraft data taken by Time History of Events and Macroscale Interactions during Substorms (THEMIS), Polar, Cluster, and Van Allen Probes missions including geomagnetic storms in the time interval between and Cited by: 5.

A dynamical empirical model of the near‐geosynchronous magnetic field has been constructed, based on a recently developed radial basis functions approach and a multiyear set of spacecraft data taken by Time History of Events and Macroscale Interactions during Substorms (THEMIS), Polar, Cluster, and Van Allen Probes missions including geomagnetic storms in the time Cited by: 5.

Abstract A dynamical empirical model of the near-geosynchronous magnetic field has been constructed, based on a recently developed radial basis functions approach and a multiyear set of spacecraft data taken by Time History of Events and Macroscale Interactions during Substorms (THEMIS), Polar, Cluster, and Van Allen Probes missions including geomagnetic storms in the time interval between.

Journals & Books; Help; COVID campus the guiding centre trajectories of ions were integrated in a simple two-dimensional model of the quiet time nightside magnetosphere in order to estimate their properties on arrival in the ring current region.

In this paper, the validity of the guiding centre approximation is investigated, using full Cited by: 3. While great effort has been spent on developing empirical models of the terrestrial magnetospheric magnetic field, trapped radiation (e.g., AP-8) and, to a somewhat lesser degree, the ionospheric projection of magnetospheric electric fields, surprisingly little effort has been expended in developing global, empirical models of the pressure-bearing ions throughout the inner by: 2.

The Comprehensive Inner-Magnetosphere Ionosphere (CIMI) model is a bounce-averaged kinetic model of the ring current and radiation belts. This model calculates the temporal and spatial variation of the phase space density of ring current and radiation belt species: H+ and O+ in the energy range of - keV and electrons (e-) in the energy.

Global Magnetic Mapping of the Quiet and Stormy Magnetosphere: What do the Empirical Models Tell us. Questions to be discussed: the degree of the connectivity across the nightside equatorial plane, the position of the dayside polar cusps, the dawn-dusk asymmetry of the inner magnetosphere during storms, as well as mapping inaccuracies and.

imations. In the modeling of the storm-time magnetosphere, however, the temporal behavior of individual field sources comes to the forefront. It was not paid proper attention in earlier data-based models, since they were intended mostly for describing the average magnetosphere under specific solar wind or geomagnetic conditions.

That approach is no. Empirical models for the plasma densities in the inner magnetosphere, including plasmasphere and polar magnetosphere, have been in the past derived from in situ measurements. Such empirical models, however, are still in their initial phase compared to magnetospheric magnetic field by:   The data sets Geomagnetic K and K p indices.

Geomagnetic K index is a quasi-logarithmic local index of geomagnetic activity. The K index quantifies disturbances in the H component of the Earth’s magnetic field with an integer in the range of 0 to 9, with 1 indicating calm conditions and 5 or more indicating a storm.

The K index is derived from the maximum fluctuations of the H component Cited by: 7. Empirical modeling of plasma pressure and magnetic field for the quiet time nightside mag-netosphere is investigated.

Two models are constructed for this study. One model, referred to here as T89R, is basically the magnetic field model of Tsyganenko () but is modified by the. The empirical models of the inner magnetosphere ion distribution MODEM and of the pitch angle distribution PADEM have proved to be successful in deriving average features of the ring current as.

About Cookies, including instructions on how to turn off cookies if you wish to do so. By continuing to browse this site you agree to us using cookies as described in. Time series of ∆F for three orbital segments of Swarm A. Descending orbit on the nightside (left) and ascending orbit on the dayside (middle and right).Longitude, time and geographic local time when the spacecraft crossed the geographic equator are given on top of the figures.

The different colored lines indicate ∆F Io (black), ∆F IoLi (red), ∆F IoMa (blue) and ∆F IGRF (green).Cited by: 6. V. Large-Scale Models of the Inner Magnetosphere Modeling Inner Magnetospheric Electric Fields: Latest Self-Consistent Results Stanislav Sazykin, Robert W.

Spiro, Richard A. Wolf, Frank R. Toffoletto, Nikolai Tsyganenko, J. Goldstein, and Marc R. Hairston Comparison of MHD Simulations of Isolated and Storm Time Substorms M. Wiltberger, 5. R.1] We investigate the effect of plasma pressure on the magnetic field in the near-Earth magnetosphere (2 to R E) during the major magnetic storm of October 21– 25, "A historical introduction to the Ring Current", in press in Physics and Modelling of the Inner Magnetosphere (proc.

Of Chapman Conference, Helsinki, Aug. ) AGU Monograph. Of Chapman Conference, Helsinki, Aug. ) AGU Monograph.