This book contains the lectures presented at the Summer Advanced Study School, 'Magnetospheric Particles and Fields' which was held at Graz, Austria during the period August 4-15, 1975. One hundred and one persons from fifteen different countries attended the Schoo!. The authors and publisher have made a special effort for rapid publication of an up-to date status of particles, fields, and processes in planetary magnetospheres. Special thanks are due to the lecturers for their diligent preparation and excellent presentations. The in dividuallectures and the published papers were deliberately limited; the authors' cooper ation in conforming to these specifications is greatly appreciated. Many thanks are due to Drs C. D. Anger, Gerhard Haerendel, George P. Haskell, Carl McIlwain, Vytenis Vasy liunas, Martin Walt, and James Warwick who served as session chairmen during the School and contributed greatly to its success by skillfully directing the discussion period in a stimulating manner after each lecture. Many persons contributed to the success of the School. Drs C. D. Anger, Carl-Gunne Falthammar, Gerhard Haerendel, George P. Haskell, Carl McIlwain, David Nunn, Willi Riedler, Finn S Ct. raas, Vytenis M. Vasyliunas, Martin Walt, and James Warwick were especially helpful in preparing the technical program. Dr Willi Riedler assisted in ar ranging for the facilities in Graz. Drs Gerhard Kremser and Martin Friedrich were most helpful with many aspects of the local arrangements in Graz. The assistant editor, Mrs Diana R. McCormac, checked the manuscripts and proofs, and worked hard to achieve a uniform style in this book.

Inhalt
Magnetospheric Particles and Fields 1975: Summary.- Phenomenology of the Earth's Bow Shock System. A Summary Description of Experimental Results.- Examples of Plasma Flows within the Earth's Magnetosphere.- Plasma in the Polar Cusp and Plasma Mantle.- Impulsive Ion Injection into the Polar Cusp.- The Plasma Mantle as the Origin of the Plasma Sheet.- Waves in the Vicinity of the Magnetopause.- Magnetotail Model.- Plasma Observations in the Magnetotail.- An Overview of Magnetospheric Dynamics.- Simultaneous Field Aligned Current and Charged Particle Measurements in the Cleft.- Anomalous Resistivity and Parallel Electric Fields.- Explorer 45 Observations of the Proton Ring Current.- Geomagnetically Trapped Alpha Particles.- The Structure and Stability of Radiation Belt Electrons as Controlled by Wave-Particle Interactions.- Substorm Generated Fluxes of Heavy Ions at the Geostationary Orbit.- Convective Cold Upper Hybrid Instabilities.- The Earth as a Radio Source.- A Study of Triggered Emissions.- ISIS-2 Satellite Imagery and Auroral Morphology.- Morphology and Dynamics of the Instantaneous Auroral Oval.- Comparison of Auroral Electrojets and the Visible Aurora.- Auroral X-ray Morphology.- Magnetosphere-Ionosphere Interactions Via Electric Currents and Fields.- The Role of Fluctuating Acceleration in Multiple Auroral Arcs.- Electric Fields and Energetic Particle Precipitation in an Auroral Arc.- Magnetic Fields in the Solar System.- The Jovian Magnetosphere and Magnetopause.- The Magnetic Field of Jupiter.- Index Of Subjects.