Invited Talks

• Elkington, S.R., S.G. Claudepierre, C.-L. Huang, A. Unsal, and M. Wiltberger, Characterizing magnetospheric ULF activity during storms driven by high speed solar wind.  Presented at the 37th COSPAR Scientific Assembly, Montreal, Quebec, July 2008.
• Elkington, S.R., S.G. Claudepierre, and M. Wiltberger, Energetic particle transport in the inner magnetosphere: Main phase access of plasmasheet electrons to the radiation belts.  Presented at the 15th Cluster Science Workshop, Puerto Santiago, Tenerife, Spain, March 2008.
• Elkington, S.R., S.G. Claudepierre, C.-L. Huang, and A.A. Chan, Magnetospheric ULF activity as a function of solar wind conditions: implications for particle energization in the radiation belts.  Presented at the 2008 URSI meeting, Boulder, Colorado, January.
• Elkington, S.R., Physical models of the near-Earth space radiation environment.  Seminar presented at the NOAA Space Weather Prediction Center, Boulder, CO, November 2007.
• Elkington, S.R., S.G. Claudepierre, and M. Wiltberger, Particle thermalization in geospace: Solar wind/magnetosphere coupling through externally-driven ULF waves.  Presented at the NASA Living With a Star Science Workshop, Boulder, CO, September 2007.
• Elkington, S.R., A.A. Chan, B. Yu, and M. Wiltberger, Coupling between the plasmasheet and radiation belts: energetic particle transport in the inner magnetosphere.  Presented at the Fourth Annual AOGS Meeting, Bangkok, Thailand, August 2007.
• Elkington, S.R., S.G. Cludepierre, S. Kanekal, A.A. Chan, and M. Wiltberger, Characterizing ULF wave activity driven by high speed solar wind events.  Presented at IUGG/IAGA 2007, Perugia, Italy, July.
• Elkington, S.R., B. Yu, A.A. Chan, and M. Wiltberger, Flux variations in the radiation belts and the influence of coupling at the outer boundary.  Presented at the EGU General Assembly, Vienna, Austria, April 2007.
• Elkington, S.R., S.G. Claudepierre, and M. Wiltberger, Physical models of Earth's space radiation environment.  Departmental colloquium presented to the University of Colorado Department of Applied Mathematics, Boulder, February 2007.
• Elkington, S.R., D.N. Baker, B. Yu, A.A. Chan, M. Wiltberger, and A. Aasnes, Injection of plasmasheet electrons into the radiation belts.  Presented at the 2006 Western Pacific Geophysics Meeting, Beijing, China, July.
• Elkington, S.R., D.N. Baker, and M. Wiltberger, Substorm injection of energetic ions and electrons in the inner magnetosphere: MHD/particle simulations.  Presented at the 8th International Conference on Substorms, Banff, Canada, March 2006.
• Elkington, S.R., S.G. Claudepierre, and M. Wiltberger, Radiation belt dynamics driven by interaction with ULF waves.  Presented at the Workshop on Global Aspects of Magnetosphere/Ionosphere Coupling, Yosemite, CA, February 2006.
• Elkington, S.R., The Sun, the solar wind, and Earth's trapped particle environment.  General seminar presented at Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, November 2005.
• Elkington, S.R., Space weather and the dynamics of the Earth's radiation belts.  Presented at the 2005 NCAR/ASP/HAO Summer Colloquium on Space Weather, Boulder, Colorado, June.
• Elkington, S.R., A.A. Chan, Y. Fei, and M. Wiltberger, ULF waves and radial diffusion in the radiation belts.  Presented at the Chapman Conference on ULF Waves, San Diego, CA, March 2005.
• Elkington, S.R., Radial transport in the radiation belts.  Tutorial presented at the Workshop on Energetic Electron Radiation Belt Dynamics, Hermanus Magnetic Observatory, Hermanus, South Africa, March 2005.
• Elkington, S.R., A.A. Chan, Y. Fei, M. Wiltberger, Radiation belt energization via interaction with ULF waves: MHD simulations of ULF activity.  Presented at the 2005 URSI meeting, Boulder, Colorado, January.
• Elkington, S.R., M.J. Wiltberger, A.A. Chan, and Y. Fei, Energy transfer from the solar wind to the outer zone radiation belts via ULF waves.  Presented at "Sun-Earth Connection Physics: The GeoImpact of CMEs, CIRs, and Ordinary Solar Wind", Merida, Mexico, November 2004.
• Elkington, S.R., D.N. Baker, M. Wiltberger, Y. Fei, and A.A. Chan, Physical models of the radiation belts: techniques, challenges, and unknowns.  Presented at Huntsville Modeling Workshop "Challenges to Modeling the Sun-Earth System", Alabama, October 2004.
• Elkington, S.R., What we need in a GGCM to describe the radiation belts.  Presented at the GEM Summer Meeting, Snowmass, Colorado, June 2004.
• Elkington, S.R., Energetic particle transport in the magnetosphere, waves, and the plasmasphere.  Seminar presented to HAO/NCAR Plasmaspheric Research Group, October 2003.
• Elkington, S.R., D.N. Baker, M. Wiltberger, A.A. Chan, Y. Fei, Coupling energy from the solar wind into the outer zone through ULF variations.  Presented at IUGG/IAGA 2003, Sapporo, Japan, July.
• Elkington, S.R., D.N. Baker, A.A. Chan, Y. Fei, M. Wiltberger, Radial transport in the outer zone: ULF waves and the diffusion equation.  Presented at IUGG/IAGA 2003, Sapporo, Japan, July.
• Elkington, S.R., Transport in the radiation belts and the role of magnetospheric ULF waves.  Plenary tutorial presented at the GEM Summer Meeting, Snowmass, Colorado, June 2003.
• Elkington, S.R., Modeling transport and acceleration of energetic electrons in the outer zone radiation belt.  Seminar presented to the Space Physics Division, Los Alamos National Laboratory, February 2003.
• Elkington, S.R., D.N. Baker, A.A. Chan, Y. Fei, M.K. Hudson, and T.G. Onsager, ULF waves and energetic electron dynamics in the outer zone. Presented at the AGU 2002 Fall Meeting, San Fransisco, CA, December.
• Elkington, S.R., D.N. Baker, A.A. Chan, Y. Fei, M.K. Hudson, and M. Wiltberger,  Synergistic development of physical radiation belt models.  Presented to NASA "Living With A Star" Science Workshop, Johns Hopkins/Applied Physics Laboratory, Columbia, MD, November 2002.
• Elkington, S.R.,  D.N. Baker, A.A. Chan, Y. Fei, M.K. Hudson, and M. Wiltberger, The plasma sheet as a source of outer zone electrons: physical space weather models and lessons learned from ISTP.  Presented at the 2002 Western Pacific Geophysics Meeting, Wellington, New Zealand, July.
• Elkington, S.R., MHD/particle simulations of the near-Earth magnetotail. Seminar presented to the Department of Physics and Astronomy, Dartmouth College, Hanover, NH, April 2002.
• Elkington, S.R., Particle simulations of the radiation belts.  Seminar presented to the Department of Physics and Astronomy, Rice University, November 2001.
• Elkington, S.R., A.A. Chan, and M.K. Hudson, I.R. Mann, Radial diffusion in a non-axisymmetric magnetic field:  towards a generalized theory of radial diffusion.  Presented at the ISEC 2001 Conference on Radiation Belt Science and Technology, Queenstown, New Zealand, July 2001.
• Elkington, S.R., Earth's trapped radiation environment:  Understanding the dynamics of the Van Allen radiation belts.  Colloquium presented to the Department of Physics and Astronomy, Northwestern University, Chicago, January 2001.
• Elkington, S.R., M.K. Hudson, and A.A. Chan, Transport and acceleration of radiation belt electrons through resonant interaction with magnetospheric ULF oscillations.  Presented at the First S-RAMP Conference, Sapporo, Japan, Oct 2000.
• Elkington, S.R., M.K. Hudson, J.G. Lyon, and A.A. Chan, Modeling radiation belt injection and acceleration processes.  Presented at the NATO Advanced Study Institute on Space Storms and Space Weather Hazards, Crete, Greece, June 2000.
• Elkington, S.R., Using MHD/Particle simulations to predict radiation belt dynamics during geomagnetic storms.  Seminar presented at NOAA/SEC, Boulder, CO, January 2000.
• Elkington, S.R., M.K. Hudson, and J.G. Lyon, Energetic electrons and the January 1997 magnetic storm:  simulations vs. observations.  Presented to the 6th Huntsville Modeling Workshop, Guntersville, AL, October 1998.

Contributed Talks

• Elkington, S.R., T. Sarris, W. Yue, X. Li, R. Rankin, K. Kabin, and A. Degeling, Polarization characteristics of ULF waves: covariant calculations vs. THEMIS observations.  Presented at the 2008 Inner Magnetospheric Coupling Workshop, Espoo, Finland, July.
• Elkington, S.R., A.A. Chan, B. Yu, and M. Wiltberger, Plasmasheet injections during geomagnetic storms.  Presented at the 2008 Inner Magnetospheric Coupling Workshop, Espoo, Finland, July.
• Elkington, S.R., S.G. Claudepierre, C.-L. Huang, A. Unsal, and M. Wiltberger, Solar wind driving of magnetospheric ULF waves: cavity modes?  Presented at the 2008 Inner Magnetospheric Coupling Workshop, Espoo, Finland, July.
• Elkington, S.R., S.G. Claudepierre, C.-L. Huang, and A.A. Chan, Magnetospheric ULF activity as a function of solar wind conditions: toward a quantitative model of radial diffusion .  Presented at the 2007 Fall AGU Meeting, San Francisco, CA, December.
• Elkington, S.R., Does the CISM radiation belt model need to include an internal source?  Presented at the 2007 CISM All Hands Meeting, Boston, MA, September.
• Elkington, S.R., B. Yu, A.A. Chan, and M. Wiltberger, Stormtime plasmasheet access to the inner magnetosphere: evidence for an internal source.  Presented at the 2007 Rarotonga Energetic Particle Workshop, Rarotonga, Cook Islands, August.
• Elkington, S.R., A.A. Chan, and B. Yu, Boundary conditions and fluxes in the outer radiation belts: Particle injections from the plasmasheet.  Presented at the 2006 Fall AGU Meeting, San Francisco, CA, December.
• Elkington, S.R., Physical radiation belt models,  Presented at the 2006 CISM All Hands Meeting, Boston, MA, September.
• Elkington, S.R. and M. Wiltberger, Plasmasheet dynamics and loss of particles from the radiation belts via radial diffusion.  Presented at the GEM 2006 Summer Meeting, Snowmass, CO, June.
• Elkington, S.R., What we need to know to understand radial diffusion in the Earth's magnetosphere.  Seminar presented to LASP Magnetospheric Physics Group, March 2006.
• Elkington, S.R., M. Wiltberger, D.N. Baker, and R.H.W. Friedel, Convective injection of radiation belt electrons: a comparison of two storms.  Presented at the 2005 Fall AGU Meeting, San Francisco, CA, December.
• Elkington, S.R., D.N. Baker, and M. Wiltberger, Boundary conditions on the radial diffusion problem, and diffusion as a loss process.  Presented at the GEM 2005 Summer Meeting, Santa Fe, NM, June.
• Elkington, S.R., Transport in the radiation belts and global circulation models.  Presented at the GEM 2005 Summer Meeting, Santa Fe, NM, June.
• Elkington, S.R., M. Wiltberger, A.A. Chan, and Y. Fei, Investigating the origin and characteristics of ULF waves driven by the solar wind.  Presented at the 2004 Fall AGU Meeting, San Francisco, CA, December.
• Elkington, S.R., 2d and 3d electron radiation belt modules,  Presented at the 2004 CISM All Hands Meeting, Boston, MA, September.
• Elkington, S.R., A.A. Chan, and Y. Fei, Wave propagation, local time effects and implications for particle energization.  Presented at the First Annual AOGS Meeting, Singapore, July 2004.
• Elkington, S.R., Wave propagation, local time effects, and particle energization.  Presented at the GEM 2004 Summer Meeting, Snowmass, Colorado, June.
  
• Elkington, S.R., M. Wiltberger, and D.N. Baker, Analysis of a substorm particle injection:  0630 UT, March 31, 2001.  Presented at the 2004 Spring AGU Meeting, Montreal, Canada, May.
• Elkington, S.R., Simulating impulsive injections in the radiation belts.  Seminar presented to LASP Magnetospheric Physics Group, February 2004.
• Elkington, S.R., A.A. Chan, Y. Fei, M. Wiltberger, The global ULF environment on 09/24/98, and effect on energetic electron dynamics.  Presented at the 2003 Fall AGU Meeting, San Francisco, CA, December.
• Elkington, S.R., Simulations of the radiation belts.  Presented at the CISM All Hands Meeting, Boston, MA, September 2003.
• Elkington, S.R., A.A. Chan, Y. Fei, M. Wiltberger, Mode structure of ULF waves in the magnetosphere and implications for energetic particle acceleration.  Presented at ISEC 2003, Toulouse, France, August.
• Elkington, S.R., D.N. Baker, M. Wiltberger, 31 March 2001 0630 substorm: injection of energetic ions and electrons.  Presented at the Chapman Conference on Physics and Modeling of the Inner Magnetosphere, Helsinki, Finland, August 2003.
• Elkington, S.R., A.A. Chan, Y. Fei, ULF mode structure in the magnetosphere: MHD.  Presented at the GEM Summer Meeting, Snowmass, Colorado, June 2003.
• Elkington, S.R., Cluster and global simulations of the magnetosphere.  Presented at the Cluster Science Working Team Meeting, Boulder, Colorado, February 2003.
• Elkington, S. R., D. N. Baker, M. J. Wiltberger, and M. K. Hudson,  Storm-time trapping of energetic plasma sheet electrons.  Presented at GEM 2002, Telluride, CO.
• Elkington, S. R., A. A. Chan, and Y. Fei, Characteristics of radial diffusion in the outer zone.  Presented at GEM 2002, Telluride, CO.
• Elkington, S. R., MHD/particle simulations of the magnetotail.  Seminar presented to LASP Magnetospheric Physics Group, March 2002.
• Elkington, S. R., D. N. Baker, X. Li, M. K.  Hudson, and M. J. Wiltberger, Storm-time injection and trapping of plasma sheet particles in the outer zone:  March 31, 2001.  Presented at the 2001 Fall AGU Meeting, San Francisco, CA, December.
• Elkington, S. R., MHD simulations of the Earth's magnetosphere.  Seminar presented to LASP Magnetospheric Physics Group, October, 2001.
• Elkington, S. R., A. A. Chan, and M. K. Hudson, Enhanced radial diffusion of energetic electrons in a compressed magnetic field.  Presented at the 2001 GEM meeting, Snowmass, CO, June 2001. 
• Elkington, S. R., M. K. Hudson, and A. A. Chan, Enhanced radial diffusion of outer zone electrons in an asymmetric geomagnetic field.  Presented at the Spring AGU meeting, Boston, MA, May 2001. 
• Elkington, S. R., P. Buehler, D. F. Moorer, D. N. Baker, M. K. Hudson, M.J. Wiltberger, J. F. Fennell, Data assimilation in initializing MHD/particle simulations of the radiation belts.  Pesented at the AGU 2000 Fall Meeting, San Fransisco, CA, Dec 2000.
• Elkington, S. R., M. K. Hudson, J. B. Blake, and A. A. Chan, Energetic electron response during the geomagnetic storm of September 24-26, 1998.  Presented at the First S-RAMP Conference, Sapporo, Japan, Oct 2000.
• Elkington, S. R., M. K. Hudson, and A. A. Chan, Resonant diffusion of outer zone electrons.  Presented at the NATO Advanced Study Institute on Space Storms and Space Weather Hazards, Crete, Greece, June 2000.
• Elkington, S. R., M. K. Hudson, and A. A. Chan, Enhanced radial diffusion of outer zone electrons through resonant interaction with magnetospheric ULF waves.  Presented at the AGU 2000 Spring Meeting, Washington, D. C., May 2000.
• Elkington, S. R., M. K. Hudson, and A. A. Chan, Resonant diffusion of radiation belt particles in the ULF frequency continuum.  Presented at the AGU 1999 Fall Meeting, San Francisco, CA, December 1999.
• Elkington, S. R., M. K. Hudson, and A. A. Chan, Acceleration and radial transport of relativistic electrons via global Pc-5 ULF waves.  Presented at IUGG-99, Birmingham, UK, July 1999.
• Elkington, S. R., M. K. Hudson, and A. A. Chan, Resonant acceleration of magnetospheric electrons via Pc-5 ULF oscillations.  Presented at the AGU 1999 Spring Meeting, Boston, MA, June 1999.
• Elkington, S. R., M. K. Hudson, and J. G. Lyon, Simulating energetic electron acceleration during the January 10, 1997 magnetic storm:  the role of magnetospheric ULF oscillations.  Presented at the ISTP Science Workshop, NASA/Goddard Space Flight Center, April 1998.
• Elkington, S. R., M. K. Hudson, and J. G. Lyon, Storm-time convection of plasma sheet electrons into the outer radiation belt.  Presented at the AGU1998 Fall Meeting, San Francisco, CA, December 1998.
• Elkington, S. R., M. K. Hudson, J. G. Lyon, Global simulations of the radiation belt response to the magnetic storm of January 10-11, 1997. Presented at the GEM/ISTP Conference, Yosemite, CA, February 1998.
• Elkington, S. R., M. K. Hudson, J. G. Lyon, Acceleration of relativistic electrons during storm sudden commencement.  Presented at the 1997 GEM Conference, Snowmass, CO, June 1997.

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