Scientific Contributed Presentations by WALTHER N. SPJELDVIK

______________________ 2000 - Present: ___________________________

Spjeldvik, W. N., S. Bourdarie, and D. Boscher: "Multi-Dimensional Model for Radiation Belt Helium Ions: 1. Steady State Equilibrium Evaluation", European Geophysics Society Symposium, Nice, France, April 2000.

Spjeldvik, W. N., S. Bourdarie, and D. Boscher: "Multi-Dimensional Model for Radiation Belt Helium Ions: 2. Evolution During an Idealized Magnetic Storm", European Geophysics Society Symposium, Nice, France, April 2000.

Spjeldvik, W. N., A. Vacaresse, S. Bourdarie and D. Boscher: "Radiation Belt Modeling of an Idealized Magnetic Storm: Comparison of Modeling with Fixed Outer Boundary Location versus Modeling Including Assumed Geomagnetic Cut-Off Variations with Geophysical Activity", NATO Space Weather Symposium, Heraklion, Crete, Greece, June 2000.

Gusev, A., I. M. Martin, G. I. Pugacheva and W. N. Spjeldvik: "Influence of the 22-Year Solar Magnetic Cycle on Periodic Climatic Changes in the Brazilian Region of South America", NATO Space Weather Symposium, Heraklion, Crete, Greece, June 2000.

Spjeldvik, W. N., S. Bourdarie and D. Boscher: "Towards Multi-Dimensional Space Weather Modeling for Energetic Oxygen Ions in the Earth's Inner Magnetosphere: Equilibrium Configuration Modeling", The COSPAR Biannual Symposia, Warsaw, Poland, July 2000.

Pugacheva, G. I., A. A. Gusev, U. Jayanthi, I. M. Martin and W. N. Spjeldvik: "Source of Magnetospheric Antiparticles: Nuclear Reactions in a Rarefied Atmosphere", The COSPAR Biannual Symposia, Warsaw, Poland, July 2000.

Spjeldvik, W. N., S. Bourdarie and D. Boscher: "Solar Origin Iron Ions in the Earth's Radiation Belts: Multi-Dimensional Equilibrium Configuration Modeling with Charge States 1 through 12", The COSPAR Biannual Symposia, Warsaw, Poland, July 2000.

Gusev, A. A., U. Jayanthi, I. M. martin, G. I. Pugacheva and W. N. Spjeldvik: "FEM Code Simulation of the Magnetospheric Proton Fluxes", The COSPAR Biannual Symposia, Warsaw, Poland, July 2000.

Spjeldvik, W. N., Galina I. Pugacheva, Antonio Almeida, Anatoly A. Gusev, Inacio M. Martin and Viacheslav M. Pankov: "Rainfall Cycles With Bidecadal Periods in the Brazilian Region of the South American Continent", Presented at the ISCS 2001 Symposium, Longmont, Colorado, 13-16 June 2001.

Pugacheva, G. I., W. Gonzalez, A. A. Gusev, U. B. Jayanthi, I. M. Martin, D. Boscher, S. Bourdarie, and W. N. Spjeldvik: "Numerical Simulations of the Steady State Proton, Positron, Isotope Ion Radiation Belts and of the Sudden Creation of a Transient Helium Radiation Belt During a Geomagnetic Storm", Biannual Radiation Belt Symposium, Wellington, New Zealand, June 2001.

Spjeldvik, W. N., T. A. Fritz, and J. Chen: "The Geomagnetic Cusps as Seen in High Charge State Shocked Solar Wind Ions Observed with s/c Polar during April 2001", Paper SM41B-0798 at the Fall Annual Meeting of the American Geophysical Unions, San Francisco, December 2001.

Darrouzet, F, W. N. Spjeldvik, J. L. Lemaire, and G. Gustafsson: "Towards an Empirical Model of the High Latitude Distributions of VLF-frequency Plasma Wave Energy: Information from the Swedish Viking Spacecraft", COSPAR-symposium, World Space Congress, Houston, Texas, October 2002.

Spjeldvik, W. N., T. A. Fritz, J. Chen and Q.-G. Zong: "Energetic Ion Observations of the Earth's Magnetic Cusps During an Extended Geomagnetically Quiet Period in April 2001 Using Detectors on S/C POLAR", COSPAR-symposium, World Space Congress, Houston, Texas, October 2002.

Gusev, A. A., I. M. Martin, V. Pankov, G. Pugacheva, N. J. Schuch, and W. N. Spjeldvik: "Bidecadal Cycles in Liquid Precipitations in Brazil: Association with Geomagnetic Activity", COSPAR-symposium, World Space Congress, Houston, Texas, October 2002.

Darrouzet, F., W. N. Spjeldvik, J. F. Lemaire, G. Gustafsson, and P. M. E. Decreau, "The SEVEM PROJECT": Towards Statistical and Empirical Models of the Distributions of VLF Waves in the Earth's Magnetosphere, IUGG Symposium, Paris, 2003.

Spjeldvik, W. N., F. Darrouzet, J. F. Lemaire, G. Gustafsson, A. A. Gusev, and G. I. Pugacheva: Empirical Model of VLF Power Spectral Densities in the High Llatitude Terrestrial Magnetosphere: Results from the Swedish Viking Spacecraft, 7th COLAGE Conference on Space Geophysics, Atibaia, São Paulo, Brazil, March 2004.

Spjeldvik, W. N., S. Bourdarie, D. Boscher, G. I. Pugacheva, and A. A. Gusev: Multi-Dimensional Parameterized Model for Radiation Belt Helium Ions: Steady-State Equilibrium Evaluation, 7th COLAGE Conference on Space Geophysics, Atibaia, São Paulo, Brazil, March 2004.

Gusev, A. A., Choque, K. T., Jayanthi, U. B., Pugacheva, G. I., Schuch, N. J., Spjeldvik, W. N., Diffusion of interstellar antiprotons into Earth's magnetosphere and formation of the antiproton radiation belt, 7th COLAGE Conference on Space Geophysics, Atibaia, São Paulo, Brazil, March 2004.

Spjeldvik, W. N., S. Bourdarie, D. Boscher, G. I. Pugacheva, and A. A. Gusev: Towards Multi-dimensional Space Weather Modeling for Energetic Oxygen Ions in the Earth's Inner Magnetosphere: Equilibrium Configuration Modeling, 7th COLAGE Conference on Space Geophysics, Atibaia, São Paulo, Brazil, March 2004.

Pugacheva, G. I. , Gusev, A. A. , Jayanthi, U. B. , Schuch, N. J. , Spjeldvik, W. N., Temporal Polar Cap Radiation Belts on Dayside Magnetosphere, 7th COLAGE Conference on Space Geophysics, Atibaia, São Paulo, Brazil, March 2004.

Spjeldvik, W. N., S. Bourdarie, D. Boscher, G. I. Pugacheva, and A. A. Gusev: Solar Origin Iron Ions in the Earth's Radiation Belts: Multi-dimensional Equilibrium Configuration Modeling with Charge States 1 through 12, 7th COLAGE Conference on Space Geophysics, Atibaia, São Paulo, Brazil, March 2004.

Bickford, J., J. Kochocki, B. Schmitt, W. N. Spjeldvik, O. Batishcev, and H. Spemce, Collection of Antiparticles Concentrated in Planetary Magnetic Fieldsm NASA Institute for Advanved Concepts (NIAC) Symposium, Colorado Springs, Colorado, October 2005.
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