World Library  

Add to Book Shelf
Flag as Inappropriate
Email this Book

Three-Dimensional Ring Current Decay Model

By Fok, Mei-Ching

Click here to view

Book Id: WPLBN0004289752
Format Type: PDF eBook :
File Size:
Reproduction Date: 1995-06-01

Title: Three-Dimensional Ring Current Decay Model  
Author: Fok, Mei-Ching
Volume: Report-Number: NAS 1.19:338; NASA-EP-338; NIPS-95-06413
Language: English
Subject: Color Photography, Jupiter (Planet), Mars (Planet)
Collections: Government Library Collection, Government Library Collection
Publication Date:


APA MLA Chicago

E, M. T. (1995). Three-Dimensional Ring Current Decay Model. Retrieved from

Description: This work is an extension of a previous ring current decay model. In the previous work, a two-dimensional kinetic model was constructed to study the temporal variations of the equatorially mirroring ring current ions, considering charge exchange and Coulomb drag losses along drift paths in a magnetic dipole field. In this work, particles with arbitrary pitch angle are considered. By bounce averaging the kinetic equation of the phase space density, information along magnetic field lines can be inferred from the equator. The three-dimensional model is used to simulate the recovery phase of a model great magnetic storm, similar to that which occurred in early February 1986. The initial distribution of ring current ions (at the minimum Dst) is extrapolated to all local times from AMPTE/CCE spacecraft observations on the dawnside and duskside of the inner magnetosphere spanning the L value range L = 2.25 to 6.75. Observations by AMPTE/CCE of ring current distributions over subsequent orbits during the storm recovery phase are compared to model outputs. In general, the calculated ion fluxes are consistent with observations, except for H() fluxes at tens of keV, which are always overestimated. A newly invented visualization idea, designated as a chromogram, is used to display the spatial and energy dependence of the ring current ion differential flux. Important features of storm time ring current, such as day-night asymmetry during injection and drift hole on the dayside at low energies (less than 10 keV), are manifested in the chromogram representation. The pitch angle distribution is well fit by the function, J(sub o)(1 Ay(sup n)), where y is sine of the equatorial pitch angle. The evolution of the index n is a combined effect of charge exchange loss and particle drift. At low energies (less than 30 keV), both drift dispersion and charge exchange are important in determining n.; CASI; Nasa Publication Center: Marshall Space Flight Center; Unclassified; No Copyright; Unlimited; Publicly available;; Report-Number: NAS 1.19:338; NASA-EP-338; NIPS-95-06413


Click To View

Additional Books

  • Small and Medium Sized Enterprise Progra... (by )
  • Teaching English Language Learners 
  • Customer Satisfaction Measurement Issues... (by )
  • Decorating the Capitol in the Pompeian S... (by )
  • The Okhrana's Female Agents (by )
  • Malawi Primary Education Social Studies (by )
  • The Okhrana's Female Agents Part II : In... (by )
  • Engines and Turbines and Farm Machinery ... (by )
  • United States Department of Commerce Dc ... (by )
  • Understanding the Process of Economic Ch... (by )
  • Analyzing Soviet Politics and Foreign Po... (by )
  • Spheres of Influence the Nexttarget Ofbi... (by )
  • Alice in Wonderland (by )
  • The Power of Our Words (by )
  • Ksiaga Herbowa Rodaw Polskich (by )
  • Slovenský Domáci Lekár a Radca; Ináe, Pr... (by )
  • Encyklopedja Powszechna (by )
  • Insan Ve Din (by )
  • Dutch Fairy Tales for Young Folks (by )
  • Adama Mickiewicza Konrad Wallenrod I Gra... (by )
  • Report of the Children's Commission to t... (by )
  • A History of Animals 
  • Spisy Básnické Andreja Sládkovia (by )
  • Sisters of Glass (by )
Scroll Left
Scroll Right


Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.