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Publications, Presentations, and Animations

Publications:
  1. Fung, S. F., Recent development in the NASA trapped radiation models, Radiation belts Models and Standards, Geophysical Monogr., 97, AGU, Washington, D. C., 79-91, 1996.
  2. Fung, S. F., D. M. Boscher, L. C. Tan, J. F. Cooper, and D. S. Evans, Modeling the low-altitude trapped radiation environment, in the Proceedings of the ESA Symposium On Environment Modelling For Space-Based Applications, ESA SP-392, ESA, the Netherlands, pp. 65-74 1996.
  3. Fung, S. F., L. C. Tan, D. Bilitza, D. Boscher, and J. F. Cooper, An investigation of the spatial variations of the energetic trapped electrons at low altitudes, Proceedings of the Committee on Space Research (COSPAR) 31st Scientific Assembly, Adv. Space Res., 21, 1661-1664, 1998.
  4. Fung, S. F., and L. C. Tan, Time correlation of low-altitude relativistic trapped electron fluxes with solar wind speeds, Geophys. Res. Lett., 25, 2361-2364, 1998.
  5. Fung, S. F., Survey of current situation in radiation belt modeling, Adv. Space Res., to be published, 2003.
  6. Fung, S. F., and L. C. Tan, An alternate drift shell parameter for modeling trapped particles, Radiation Measurements, 30, 609-615, 1999.
  7. Vassiliadis, D., A. J. Klimas, R. S. Weigel, D. N. Baker, E. J. Rigler, S. G. Kanekal, T. Nagai, S. F. Fung, R.W.H. Friedel, T.E. Cayton, Structure of Earth's Outer Radiation Belt Inferred from Long-Term Electron Flux Dynamics, Geophys. Res. Lett., Volume 30, Issue 19, pp. SSC 4-1, CiteID 2015, DOI 10.1029/2003GL017328, 2003.
  8. Fung,S. F., E. V. Bell, L. C. Tan, R. M. Candey, M. J. Golightly, S. L. Huston, J. H. King, and R. E. McGuire, Development of A Magnetospheric State-Based Trapped Radiation Data Base, Adv. Space Research, in press, 2003.
  9. Vassiliadis, D., A.J. Klimas, S.F. Fung, D.N. Baker, R.S. Weigel, S. Kanekal, Structure and Dynamics of the Electron Radiation Belts: Implications for Space Weather Modeling and Forecasting, submitted to Proceedings of ESPRIT Workshop, Rhodes, Greece, March 25-29, 2003.
  10. Shao, X., S. F. Fung, L. C. Tan, K. Papadopoulos, M. Wiltberger, M. C. Fok, Investigation of 3D Energetic Particle Transport Inside Quiet-Time Magnetosphere Using Particle Tracing in Global MHD model, AGU Monograph on Physics and Modeling of the Inner Magnetosphere, submitted, January 2004.
  11. Lun C. Tan, Shing F. Fung, and Xi Shao, Observation of magnetospheric relativistic electrons accelerated by Pc-5 ULF waves, Geophys. Res. Lett., in press, 2004.
  12. Fung, S. F and X. Shao, Magnetospheric state specification, J. Geophys. Res., submitted, April, 2004.

Presentations:
  1. Fung, S. F., E. V. Bell, R. M. Candey, M. J. Golightly, S. L. Huston, J. H., King, R. E. McGuire, and L. C. Tan, "Development of a New Trapped Radiation Data Base for the NASA Living With A Star Program," presented at the Spring American Geophysical Union Meeting, May 28-31, 2002.
  2. L C Tan, S F Fung CRRES Observations of Rapid Relativistic Electron Flux Increases During Intense Isolated Substorms, presented at the Spring American Geophysical Union Meeting, May 28-31, 2002.
  3. Fung, S. F., E. V. Bell, R. M. Candey, M. J. Golightly, S. L. Huston, J. H. King, R. E. McGuire, L. C. Tan, "Development of A Magnetospheric State-Based Trapped Radiation Data Base," presented at the 34th Scientific Assembly of COSPAR, Houston, TX, October 15, 2002.
  4. Fung, S. F., E. V. Bell, R. M. Candey, M. J. Golightly, S. L. Huston, J. H. King, R. E. McGuire, L. C. Tan, "Development of A Magnetospheric State-Based Trapped Radiation Data Base for the Living With A Star Program," presented at LWS Workshop, JHUAPL, November 13-15, 2002.
  5. Vassiliadis, D; Weigel, R; Klimas, A; Fung, S; Kanekal, D; Baker, D; Rigler, J; Nagai, T; Friedel, R; Cayton, T, New results on the structure and dynamics of the radiation belts, presented at EGS-AGU-EUG Joint Assembly, Nice, France, 06 - 11 April 2003.
  6. Tan, L. C.; Fung, S. F.; Shao, X., Azimuthal locations of relativistic-electron injections determined from drift echo analysis, presented at EGS-AGU-EUG Joint Assembly, Nice, France, 06 - 11 April 2003.
  7. Shao, X.; Fung, S. F.; Tan, L. C.; Papadopoulos, K.; Fok, M. C.; Wiltberger, M.; Lyon, J. G.; Goodrich, C. C., Simulating the transport of the energetic equatorial particles to the cusp region from the global MHD simulation outputs, presented at EGS-AGU-EUG Joint Assembly, Nice, France, 06 - 11 April 2003.
  8. Fung, S. F.; Tan, L. C.; Bell, E. V.; Candey, R. M.; Golightly, M. J.; Huston, S. L.; King, J. H.; McGuire, R. E.; Shao, X., Characteristics of quiet-time trapped radiation environment deduced under the extremely quiet magneotospheric state condition, presented at EGS-AGU-EUG Joint Assembly, Nice, France, 06 - 11 April 2003.
  9. Shao, X., S. F. Fung, L. C. Tan, K. Papadopoulos, Mei-ching Fok, M. Wiltberger, J. G. Lyon, and C. C. Goodrich, Simulating 3D Transport of High-Energy Particles, presented at the GEM 2003 Summer Workshop, Snowmass, CO, June 22-27, 2003.
  10. Shao, X., S. F. Fung, L. C. Tan, K. Papadopoulos, Mei-ching Fok, M. Wiltberger, J. G. Lyon, and C. C. Goodrich, Simulating 3D Transport of High-Energy Particles during Magnetospheric Substorm, to be presented at the Chapman Conference on Physics and Modelling of the Inner Magnetosphere, Helsinki, Finland, 25-29 August, 2003.
  11. Vassiliadis, D., S.F. Fung, A.J. Klimas, D.N. Baker, R.S. Weigel, E.J. Rigler, S.G. Kanekal, T. Nagai, R. Friedel, T. Cayton, The response of the energetic electron flux in the outer belt to interplanetary and magnetospheric parameters, presented at the International Space Environment Conference 2003: Radiation Belt Science (ISEC 2003), Toulouse, France, September 2-5, 2003.
  12. Shao, X.; Fung, S. F.; Tan, L. C.; Papadopoulos, K.; Wiltberger, M.; Lyon, J. G., Investigation of Shabansky Orbit Accessibility by Using 3D Particle Tracing in the Global MHD Simulations, presented at the American Geophysical Union, Fall Meeting, San Francisco, CA, December 7-12, 2003.
  13. Vassiliadis, D.; Fung, S. F.; Klimas, A. J.; Shao, X.; Baker, D. N.; Kanekal, S. G.; Weigel, R. S.; Rigler, E. J., Modeling relativistic electron fluxes in the inner magnetosphere with spatially distributed models, presented at the American Geophysical Union, Fall Meeting, San Francisco, CA, December 7-12, 2003.
  14. Fung, S. F.; Shao, X.; Bell, E. V.; Tan, L. C.; McGuire, R. E.; Candey, R. M.; Huston, S. L.; Golightly, M. J., Demonstration of a Prototype Magnetospheric State-Based Trapped Radiation Data Base for the LWS Program, presented at the American Geophysical Union, Fall Meeting, San Francisco, CA, December 7-12, 2003.
  15. Fung, S. F. and X. Shao, Multi-parameter characterization of magnetospheric states, to be presented at the spring AGU meeting, Montreal, Canada, May 17-21, 2004.
  16. Tan, L. C., S. F. Fung, and X. Shao, Space Observation of Magnetospheric Relativistic Electrons Accelerated by Pc-5 ULF Waves, to be presented at the spring AGU meeting, Montreal, Canada, May 17-21, 2004.
  17. Shao, X., S. F. Fung, and L. C. Tan, A Simulation Study of Drift-Resonant Acceleration of Magnetospheric Relativistic Electrons by ULF Waves, to be presented at the spring AGU meeting, Montreal, Canada, May 17-21, 2004.
  18. Fung, S. F., Xi Shao, L. C. Tan, S. L. Huston, R. M. Candey, M. J. Golightly, and R. E. McGuire, A prototype magnetospheric state-based trapped radiation model, to be presented at the 35th COSPAR Scientific Assembly, Paris, France, July, 2004. (invited)
  19. Tan, L. C., S. F. Fung, and Xi Shao, Coherent Behavior of Energetic Electrons in Outer Radiation Belt and Its Implication to Trapped Radiation Modeling, to be presented at the 35th COSPAR Scientific Assembly, Paris, France, July, 2004.
Animations:
  1. still from model simulation (Mpeg, 462kb)

    When Earth's magnetic field is disturbed by a solar storm event, many changes occur which lead to complex rearrangements of earth's magnetosphere, and the particles that flow within it. This computer model was calculated for one such 'magnetospheric substorm' to show the complexity of these rearrangements. The lines are a few of the magnetic field lines from earth. The density of the trapped plasma (charged particles) is also shown in colors that denote large and small values.
  2. still from a second model simulation (Mpeg, 2MB)

    As the magnetic field of Earth undergoes a storm, trapped particles flow in specific ways as magnetic fields compress and energize them. This computer model shows how protons (the nuclei of hydrogen atoms) flow within a radiation belt during a magnetic substorm. The lines are the magnetic field lines of earth, and the balls represent a few of the trillions of protons which are flowing in the various belts and currents. The colors represent the different energies carried by the protons.
  3. still from a third model simulation (Mpeg, 2MB)

    At the same time the protons are flowing around Earth and being energized by magnetic forces, electrons are also flowing in similar regions of space. This computer model shows many similarities and differences between the electron belts and the proton belts. As before, The colors represent the various energies of the electrons while the lines represent the calculated locations of Earth's magnetic field.