The 10th ESLAB Symposium was held at Grossenzersdorf near Vienna on 10-13 June 1975 under the title 'The Scientific Satellite Programme During the Inter­ national Magnetospheric Study'. The Symposium was attended by an invited audience of 60 scientists from the ESA Member States, the United States, Japan, Canada and Austria. Following a report by the joint COSPAR-IUCSTP Special Working Group, the International Magnetospheric Study (lMS) is proposed as an international co­ operative enterprise of limited duration, having as its principal objective the achie­ vement of a comprehensive, quantitative understanding of the dynamical processes operating in the Earth's plasma and field environment. In order to accomplish this objective, it is thought to be necessary to carry out simultaneous measurements with nearly identical instrumentation at various points in space. These measurements will need to be made in combination with appropriate observations at or near the Earth's surface. Besides near-Earth observations by ground-based, rocket- and balloon-borne instrumentation, satellite investigations are expected to make an important contri­ bution to the IMS. A number of satellites assigned to magnetospheric research have recently been launched, or will be launched shortly, to be operational during the IMS. The European Space Agency has devoted two of its forthcoming scientific satellites - GEOS and ISEE-B - to magnetospheric and interplanetary research.

Inhalt

1. Opening Session.- A Summary Status Report on the International Magnetospheric Study.- The IMS Satellite Programme: Scientific Objectives.- 2. IMS Satellites: Orbits and Scientific Potential.- Identification of Satellites Possibly Active during the IMS and their Orbital Configurations.- Agreed Plans for Geos Payload Operation and Orbital Manoeuvres.- Present Status of ISEE (A and B) Mission.- The ISEE-C Mission and the IMS.- Diagnosis of Spatial Plasmas with a Relaxation Sounder.- 3. Quasistatic Magnetospheric Phenomena and Particles.- Magnetospheric DC Electric Fields: Present Knowledge and Outstanding Problems to be Solved during the IMS.- Magnetospheric Convection Induced by Interplanetary Magnetic-Field Variations.- Magnetopause Position and the Reconnection Problem.- New Theoretical Aspects of the Shape of the Magnetospheric Boundary.- Low-Energy Heavy-Ion Observations on the IMP 7 Satellite.- Low-Energy-Proton Regime in the Geomagnetic Tail at Lunar Distance.- Solar Phenomena, Weather and Climate.- 4. Particles and Magnetospheric Instabilities.- Multisatellite Observations of Solar Protons Penetrating the Magnetopause.- Trapped Particles and Waves, and What can be Learned from Multisatellite Experiments.- Magnetospheric Dynamics and Wave-Particle Interactions.- Mode Coupling of Cerenkov Radiation as a Source of Noise Above the Plasma Frequency.- Propagation Characteristics of Electromagnetic Waves in the Magnetosphere.- VLF Electrostatic Waves in the Magnetospheres of the Earth and Jupiter.- 5. Substorms and Conjugated Phenomena.- Substorm Phenomena and the Uniqueness of the Geostationary Orbit for Observation of Dynamic Processes in the Magnetosphere.- Substorm Observations of Magnetic Perturbations and ULF Waves at Synchronous Orbit by ATS-1 and ATS-6.- Summary of the La Jolla Conference on Quantitative Magnetospheric Models.- Influence of Magnetospheric Parameters on Geosynchronous Field Characteristics, Last Closed Field Lines and Dayside Neutral Points.- Proposed Ba+ Ion-Tracer Conjugacy and Related Studies Using the Geos Satellite.- 6. Near-Earth Experiments Related to the IMS Satellite Programmes.- Local Acceleration of Auroral Electrons.- Support of Satellite Missions by High-Latitude Rocket Campaigns.- The Roles of Networks of VLF Direction-Finding Receivers during the IMS.- Availability and Distribution of Geos Data during the IMS.- Method, Content and Format of ISEE Data Distribution.- Index of Authors.