Invited Presentations by WALTHER N. SPJELDVIK:
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Spjeldvik, W. N.: "Plutselige jonosfaeriske forstyrrelser" ("'Sudden Ionospheric Disturbances'"), The Auroral Observatory (now: Department of Physics, University of Tromso), Tromso, Norway, May 1970.

Spjeldvik, W. N.: "Structure of the Ionospheric D-Region", Department of Physics, University of California (UCLA), Los Angeles, California, December 1971.

Spjeldvik, W. N.: "Lumped Ion Chemistry: Electron and Ion Groups in the D-Region Ionosphere", Department of Meteorology, University of California, Los Angeles, California, March 1973.

Spjeldvik, W. N.: "A Numerical Method to Describe Electron Precipitation into the Atmosphere", Department of Meteorology, University of California (UCLA), Los Angeles, California, November 1973.

Spjeldvik, W. N.: "Electron Precipitation at Middle Latitudes", Department of Meteorology, University of California, Los Angeles, California, December 1974.

Spjeldvik, W. N.: "Upper Atmosphere Meteorology", Featured Speaker Talk, Department of Meteorology, University of California, Los Angeles, California, June 4, 1975.

Spjeldvik, W. N.: "Photochemistry, Transport and Radiation: Ozone Chemistry in the Stratosphere", Department of Meteorology, University of California, Los Angeles, California, November 1975.

Spjeldvik, W. N.: "Expected Charge States of Energetic Ions in the Magnetosphere", International Association of Aeronomy and Geomagnetism, International Symposium on Solar-Terrestrial Physics, Innsbruck, Austria, June 3, 1978.

Spjeldvik, W. N.: "The Oxygen Ion Charge State Distribution in the Earth's Radiation Belts", Department of Nuclear Physics, Albrecht's Universitaet, Kiel, Germany, June 16, 1978.

Spjeldvik, W. N.: "Transport, Charge Exchange and Loss of Energetic Ions in the Earth's Radiation Belts: Applicability and Limitations of Theory", Seventh Lindau Symposium: Ion Composition, Max-Planck-Institut fur Aeronomie, Lindau/Katlenburg, Harz, Germany, August 28, 1980.

Spjeldvik, W. N.: "Quiet Time Radiation Belt Proton and Heavy Ion Models", AFGL Radiation Belt Workshop, L.G. Hanscom Air Force Base, Bedford, Massachusetts, January 27, 1981.

Fritz, T. A. and W. N. Spjeldvik: "Experimental Determination of Geomagnetically Trapped Heavy Ion Fluxes", International Association of Aeronomy and Geomagnetism, International Symposium, Edinburgh, Scotland, August, 1981.

Spjeldvik, W. N.: "Ionic Composition of the Earth's Radiation Belts", European Geophysical Society, Symposium on Plasma and Energetic Particle Distributions in the Magnetosphere, University of Leeds, Leeds, England, August 27, 1982.

Spjeldvik, W. N.: "Numerical Modeling of MeV Ion Distributions in the Earth's Radiation Belts: Multi-Mode Coupling and Transient Effects", Max-Planck-Institut fur Extraterrestrische Physik, Garching/Munich, Germany, September 16, 1982.

Spjeldvik, W. N.: "Steady State and Disturbed Ion Charge State distributions in the Earth's Radiations Belts: A Modeling Approach", Goddard Space Flight Center / University of Maryland Space and Astrophysics Seminar, Department of Physics and Astronomy, University of Maryland, College Park, Maryland, February 28, 1983.

Spjeldvik, W. N., H. H. Sauer, and F. K. Steele: "Phase Advances in VLF Wave Propagation Around the Earth", Space Environment Laboratory, NOAA, U.S. Dept of Commerce, Colorado, May 1985.

Spjeldvik, W. N.: "Modeling the Dynamic State of the Earth's Radiation Belts During Magnetic Storms", National Oceanic and Atmospheric Administration, Space Environment Laboratory, Boulder, Colorado, March 2, 1987.

Spjeldvik, W. N.: "Very Heavy Ions Trapped in the Earth's Radiation Belt Region: Theory and Comparison with Results from the AMPTE/CCE Spacecraft Detectors", Los Alamos National Laboratory, Los Alamos, New Mexico, March 28, 1991.

Spjeldvik, W. N.: "Modeling of Geomagnetically Trapped Radiation: The Need for Empirical Modeling and Physical/Theoretical Modeling", Working Group 1 Meeting, Inter-Agency Consultative Group (IACG) of the USA, Russia, Europe and Japan, Watergate Hotel, Washington, D.C., October 28, 1992.

Spjeldvik, W. N.: "Space Radiation in Earth-Space: Status of Knowledge and Efforts", Space Environmental Effects Symposium, STIG: Space Technology Interdependency Group: U.S. Air Force and NASA, Washington Court Hotel, Washington, D.C., November 17, 1992.

Spjeldvik, W. N.: "Transport and Loss of Carbon Ions in the Earth's Magnetosphere: A Kinetic Model", Nuclear Physics Institute, Moscow State University, Moscow, Russia, May 1993.

Spjeldvik, W. N.: "Iron Ions in the Earth's Magnetosphere: Observations and Physical Modeling", Nuclear Physics Institute, Moscow State University, Moscow, Russia, May 1993.

Spjeldvik, W. N.: "Numerical Modeling of Stably and Transiently Trapped Energetic Charged Particles in the Earth's Magnetosphere", Workshop on Radiation Belt Models, Dubna, Russia, 2 June 1993.

Spjeldvik, W. N.: "Noen loeste og noen uloeste problemer i kosmisk geofysikk: en ny synsvinkel" ("'Some Solved and Some Unsolved Problems in Cosmical Geophysics: A New Viewpoint"'), Solar-Terrestrial Physics Division, Denmark's Meteorological Institute, Copenhagen, Denmark, March 19, 1998.

Spjeldvik, W. N.: "Energetic Radiation Belt Electrons: Radial Diffusion and Pitch Angle Scattering", Technical Review Presentation, Mission Research Corporation, Santa Barbara, California, Thursday August 6, 1998.

Spjeldvik, W. N.: "Dynamics of the Earth's Radiation Belts and the Relation to Space Weather Phenomena", Lawrence Livermore National Laboratory, Livermore, California, Friday February 19, 1999.

Spjeldvik, W. N.: "Energetic Electron and Ion Distributions in the Radiation Belts", Brazilian Military College and Instituto Nacional de Pesquisas Espaciais, Brazil, Sao Jose Dos Campos, Sao Paulo, Brazil, May 15, 1999.

Spjeldvik, W. N.: "Structure and Composition of the Energetic Charged Particle Population in the Earth's Magnetosphere", Instituto de Fisica de Gleb Watahgin, Departamento de Raios Cosmicos e Cronologia, Universidade Estadual de Campinas, Campinas, Sao Paulo, Brazil, May 29, 1999.

Spjeldvik, W. N.: "Transport Computations and Anti-Proton Distributions in the Earth's Magnetosphere", Department of Astrophysics, INPE: Instituto Nacional de Pesquisas Espaciais, Ministerio de Ciencia e Tecnologia, Sao Jose dos Campos, Sao Paulo State, Brazil, September, 2002.

Spjeldvik, W. N.: "Particles and Anti-Particles in the Inner Magnetosphere of the Earth", Department of Physics, Marquette University, Milwaukee, Wisconsin, February 1, 2003.
Spjeldvik, W. N.: "Energetic Particles and Anti-Particles in the Earth's Radiation Belts", Department of Physics, Fairfield University, March 1, 2004.

Spjeldvik, W. N.: "Physics of Particles and Anti-Particles in the Magnetosphere ", Department of Physics and Geology, University of Texas - Pan American, Edinburg, Texas, March 18, 2004.

Spjeldvik, W. N.: Energetic Paricles and Antiparticles Confined and Coexisting in Geospace, Department of Physics, Wright State University, Dayton, Ohio, May 5, 2004.

Spjeldvik, W. N.: "Structure and Attributes of the Earth's Magnetic Field in Space", Department of Physics, Georgia Southern University, Statesboro, Georgia, January 18, 2005.

Spjeldvik, W. N.: "On Earthspace Energetic Particles and Anti-Particles", Department of Physics, Georgia Southern University, Statesboro, Georgia, January 19, 2005.

Spjeldvik, W. N.: "Some Aspects of Space Research, Community Servive and Outreach", NASA Jet Propulsion Laboratory, Education Office, Pasadena, California February 7, 2005.

Spjeldvik, W. N.: "Academic Leadership in Science", Siena College, New York, February 18, 2005.