Scientific Contributed Presentations by WALTHER N. SPJELDVIK

_______________________ 1969 - 1979: ____________________________

Spjeldvik, W. N.: "An Alternate Approach to Quantum Mechanical Eigenfunctions: A Literature Study", Department of Physics, University of Bergen, Norway, October 3, 1969.

Spjeldvik, W. N.: "Recent Findings in Solar Flare Associated X-Ray Perturbations of the Ionosphere: SID-Events", The Auroral Observatory (now: Department of Mathematical Sciences, University of Tromso), Tromso, Norway, June 20, 1970.

Spjeldvik, W. N.: "What we Don't Know about the Mesosphere", Seminar, Department of Meteorology, University of California, Los Angeles, California, January 28, 1972.

Spjeldvik, W. N.: "Water Cluster Ions in the D-Region Ionosphere: Ion Reaction Schemes at 50-90 km Altitude", Department of Meteorology, University of California, Los Angeles, California, September 20, 1972.

Spjeldvik, W. N.: "The Mystery of Jupiter's Red Spot: A Viable Meteorological Solution?", Department of Meteorology, University of California, Los Angeles, California, November 23, 1973.

Spjeldvik, W. N. and R. M. Thorne: "Relativistic Electron Precipitation: A D-Region Ionization Source", Fall Annual Meeting of the American Geophysical Union, San Francisco, California, December 12, 1973. In: EOS, Transactions of the American Geophysical Union, 54, 1162, 1973.

Spjeldvik, W. N.: "Geomagnetic Storm Perturbations on the Lower Ionosphere", Doctoral Committee Dissertation Topic Defense Lecture, University of California, Los Angeles, California, March 16, 1974.

Spjeldvik, W. N. and R. M. Thorne: "Geomagnetic Storm Recovery Phase Electron Precipitation and its Ionospheric Effects below 90 km", Annual Meeting of URSI, The International Union of Radio Science, Boulder, Colorado, October 17, 1974.

Spjeldvik, W. N.: "Radiation Belt Electron Precipitation and its Ionospheric Effects at Middle Latitudes", Dissertation Defense Lecture, University of California, Los Angeles, California, November 23, 1974.

Spjeldvik, W. N. and R. M. Thorne: "Middle Latitude Electron Precipitation During the Recovery Phase of a Magnetic Storm", Fall Annual Meeting of the American Geophysical Union, San Francisco, California, December 9, 1974. In: EOS, Transaction of the American Geophysical Union, 56, 1160, 1974.

Spjeldvik, W. N.: "Energetic Electron Precipitation into the Middle Latitude D-Region Ionosphere", NOAA/ERL, Space Environment Laboratory, Seminar, U. S. Department of Commerce, Boulder, Colorado, February 24, 1976.

Spjeldvik, W. N.: "Magnetic Storm Effects in the Lower Ionosphere", NOAA/ERL, Space Environment Laboratory presentation to the National Academy of Sciences Evaluation Committee, U. S. Department of Commerce, Boulder, Colorado, March 19, 1976.

Spjeldvik, W. N.: "Development of Models for Protons and Helium Ions in the Earth's Radiation Belts Based on Diffusive Radial Transport", NOAA/ERL, Space Environment Laboratory presentation to the NOAA Environmental Research Laboratories, U. S. Department of Commerce, Boulder, Colorado, May 27, 1976.

Spjeldvik, W. N.: "Radiation Belt Protons During Geomagnetically Quiescent Conditions", Fall Annual Meeting of the American Geophysical Union, San Francisco, California, December 11, 1976. In: EOS, Transaction of the American Geophysical Union, 57, 981, 1976.

Fritz, T. A. and W. N. Spjeldvik: "Energetic Helium Ions in the Quiet Time Radiation Belts", Fall Annual Meeting of the American Geophysical Union, San Francisco, California, December 11, 1976. In: EOS, Transactions of the American Geophysical Union, 57, 982, 1976.

Spjeldvik, W. N.: "Energetic Radiation Belt Protons, Helium Ions and Oxygen Ions at the Geomagnetic Equator: Theory and Observation", NOAA/ERL, Space Environment Laboratory, Seminar, U. S. Department of Commerce, Boulder, Colorado, May 10, 1977.

Spjeldvik, W. N. and T. A. Fritz: "Composition of the Hot Plasma in the Inner Magnetosphere: Observations and Theoretical Analysis of Protons, Helium Ions and Oxygen Ions", Twentieth COSPAR Meeting, Tel Aviv, Israel, June 14, 1977. In: Space Research, XVIII, 317, 1978.

Wicklund, T. G., T. A. Fritz and W. N. Spjeldvik: "Observations of Energetic Helium Ions with Explorer 45 at Geomagnetically Quiet Times", Spring Annual Meeting of the American Geophysical Union, Washington D.C., June 3, 1977. In: EOS, Transaction of the American Geophysical Union, 58, 480, 1977.

Fritz, T. A. and W. N. Spjeldvik: "Observations of the Alpha/Proton Ion Flux Ratio in the Radiation Belts at Hundreds of KeV per Nucleon", Spring Annual meeting of the American Geophysical Union, Washington, D.C., June 3, 1977. In: EOS, Transaction of the American Geophysical Union, 58, 480, 1977.

Spjeldvik, W. N. and T. A. Fritz: "Theoretical Analysis of Energetic Oxygen Ions in the Earth's Radiation Belts", Spring Annual Meeting of the American Geophysical Union, Washington, D.C., June 3, 1977. In: EOS, Transactions of the American Geophysical Union, 58, 480, 1977.

Spjeldvik, W. N.: "The Charge State Test for Sources of Radiation Belt Ions: An Analysis", International Association of Geomagnetism and Aeronomy, IAGA/IAMAP Joint Symposium, Seattle, Washington, August 27, 1977. In: EOS, Transactions of the American Geophysical Union, 58, 754, 1977.

Fritz, T. A., W. N. Spjeldvik and B. Wilken: "Megaelectronvolt Oxygen Ions: A Major Radiation Belt Constituent", International Association of Geomagnetism and Aeronomy, IAGA/IAMAP Joint Symposium, Seattle, Washington, August 27, 1977. In: EOS, Transactions of the American Geophysical Union, 58, 754, 1977.

Spjeldvik, W. N.: "Heavy Ions in the Magnetosphere: Physical and Chemical Processes", Department of Astrogeophysics, University of Colorado, Boulder, Colorado. November 6, 1977.

Spjeldvik, W. N. and T. A. Fritz: "Quiet Time Measurements of Radiation Belt MeV Oxygen Ions with Explorer 45 at L=2 to 4", Fall Annual Meeting of the American Geophysical Union, San Francisco, California, December 8, 1977. In: EOS, Transactions of the American Geophysical Union, 58, 1217, 1977.

Spjeldvik, W. N.: "Observasjoner av tunge joner i jordens straalingsbelter: Resultater fra Explorer 45 maalingene" ("'Observations of Heavy Ions in the Earth's Radiation Belts: Results from Explorer 45'"), Department of Physics, University of Bergen, Norway, May 24, 1978.

Panasyuk, M. I., T. A. Fritz and W. N. Spjeldvik: "Comparison of Equatorial Proton and Helium Ions Observations from Soviet and American Spacecraft: Molniya-1, Molniya-2 and Explorer 45", International Symposium on Solar-Terrestrial Physics, Innsbruck, Austria, June 3, 1978.

Fritz, T. A., W. N. Spjeldvik and D. J. Williams: "Interpretation of Magnetospheric Heavy Ion Observations made by NOAA/SEL Instruments near the Magnetic Equator", International Symposium on Solar-Terrestrial Physics, Innsbruck, Austria, June 3, 1978.

Fritz, T. A. and W. N. Spjeldvik: "Helium Ion Pitch Angle Distributions and the Helium Ion to Proton Flux Ratio in the Equatorial Radiation Belts", International Symposium on Solar-Terrestrial Physics, Innsbruck, Austria, June 3, 1978.

Spjeldvik, W. N. and T. A. Fritz: "Steady State Observations of Energetic Helium and Oxygen Ions in the Earth's Radiation Belts", International Symposium on Solar-Terrestrial Physics, Innsbruck, Austria, June 3, 1978.

Panasyuk, M. I., T. A. Fritz and W. N. Spjeldvik: "Equatorial Measurements of Protons and Helium Ions in the Radiation Belts: Comparison of Soviet and American Experiments", International Symposium on Nuclear Space Physics, Leningrad, USSR, October 10, 1978.

Spjeldvik, W. N.: "The Absolute and Relative Distributions of Energetic Protons and Helium Ions in the Inner Magnetosphere", Space Environment Laboratory Seminar Series, NOAA/ERL, U. S. Department of Commerce, Boulder, Colorado, October 24, 1978.

Spjeldvik, W. N.: "Heavy Ions in the Magnetosphere Observed with Explorer 45", Research Seminar, Space Physics Division, Air Force Geophysics Laboratory, L. G. Hanscom Air Force Base, Bedford, Massachusetts, July 31, 1979.

Fritz, T. A. and W. N. Spjeldvik: "ISEE Energetic Particle Observations in the Interior of the Geomagnetic Tail", International Symposium on Results from the International Magnetospheric Study (IMS), SCOSTEP / IAGA Joint Meeting, La Trobe University, Melbourne, Australia, November 27 - December 1, 1979.

Spjeldvik, W. N. and T. A. Fritz: "Energetic Radiation Belt Helium Ions During a Sequence of Geomagnetic Storms", Fall Annual Meeting of the American Geophysical Union, San Francisco, California, December 12, 1979. In: EOS, Transactions of the American Geophysical Union, 60, 930, 1979.

Feynman, J., W. N. Spjeldvik, T. A. Fritz and D. A. Hardy: "SCATHA and ATS-6 Observations of Outer Zone Particle Injections During a Multi-Substorm Magnetic Disturbance", Fall Annual Meeting of the American Geophysical Union, San Francisco, California, December 12, 1979. In: EOS, Transactions of the American Geophysical Union, 60, 924, 1979.

Spjeldvik, W. N.: "ISEE-1 Plasma Sheet Boundary Observations on April 24, 1978", Magnetotail Workshop Presentation, NASA / Goddard Space Flight Center, Greenbelt, Maryland, July 26, 1979.

Fritz, T. A., W. N. Spjeldvik, D. J. Williams and T. W. Speiser: "Movement and Characteristics of the Plasma Sheet Boundary Observed with ISEE-1 and -2 on April 24, 1978", Fall Annual Meeting of the American Geophysical Union, San Francisco, California, December 12, 1979. In: EOS, Transactions of the American Geophysical Union, 60, 908, 1979.

Williams, D. J., T. A. Fritz, W. N. Spjeldvik, B. Wilken and E. Keppler: "Dual Spacecraft Observations of Multiple Period Waves on the Magnetopause", Fall Annual Meeting of the American Geophysical Union, San Francisco, California, December 12, 1979. In: EOS, Transactions of the American Geophysical Union, 60, 908, 1979.