Preface; Participants; Part I. Introductory Observations: 1. Auroral phenomena S.-I. Akasofu; Part II. Aurural Spectoscopy and Thermosphere: 2. Overview of auroral spectroscopy A. Vallance Jones; 3. Auroral excitation processes M. H. Rees and D. Lummerzheim; 4. Auroral emission processes and remote sensing R. R. Mrier and D. J. Strickland; 5. Thermospheric response and feedback to auroral inputs D. Rees and T. J. Fuller-Rowell; 6. Thermospheric dynamics, energetics and composition at auroral latitudes T. L. Killeen, F. G. McCormac, A. G. Burns and R. G. Roble; Part III. Auroral Particles and Acceleration Mechanisms: 7. Overview of electron and ion precipitation in the auroral oval P. T. Newell, C.-I. Meng and D. A. Hardy; 8. Diagnosis of auroral acceleration mechanisms by particle measurements J. L. Burch; 9. Characteristics of magnetic-field aligned electric fields in the auroral acceleration region L. P. Block and C.-G. Fälthammar; 10. Auroral electron acceleration: a case for the stochastic alternative D. A. Bryant, D. S. Hall and R. Bingham; 11. Auroral ion acceleration and its relationship to ion composition E. G. Shelley and H. L. Collin; 12. Ion precipitation and the transport of ions accelerated by auroral processes J. M. Bosqued; Part IV. Auroras and Magnetospheric Configuation: 13. What determines the size of the auroral oval? G. L. Siscoe; 14. The quiet-time aurora and the magnetospheric configuration R. Lundin, L. Eliasson and J. S. Murphree; 15. Discrete auroras and magnetatail processes L. R. Lyons; 16. Auroral luminosity and its relationship to magnetospheric plasma domains Yu. I. Galperin and Ya. I. Feldstein; 17. The aurora and middle magnetospheric processes B. H. Mauk and C.-I. Meng; 18. Auroral plasma waves D. A. Gurnett; Part V. Aurural Substorms and Dynamics: 19. Overview of observations and models of auroral substorms G. Rostoker; 20. Diagnosis of auroral dynamics using global aurora imaging with emphasis on large-scale evolutions J. D. Craven and L. A. Frank; 21. Diagnosis of auroral dynamics using global auroral imaging with emphasis on localized and transient features G. G. Shepherd and J. S. Murphree; 22. Poleward motions of auroral structures E. W. Hones, Jr., A. B. Galvin and P. R. Higbie; 23. A magnetosphere-ionosphere coupling theory of substorms including magnetotail dynamics J. R. Kan, L. Zhu, A. T. Y. Lui and S.-I. Akasofu; Part VI. Auroral Structures: 24. Overview of auroral spatial scales D. J. Gourney; 25. Mesoscale structures in auroral phenomena O. A. Troshichev; 26. The pulsating aurora and its relationship to fields and charged-particle precipitation P. J. Tanskanen; 27. Electrodynamics of active auroral forms: westward traveling surges and omega bands W. Baumjohann; 28. Large-scale distribution of discrete auroras and field-aligned currents E. Friis-Christensen and K. Lassen; Part VII. Aurora and Ionosphere: 29. The auroral electrojets: relative importance of ionspheric conductivities and electric fields Y. Kamide; 30. Large-scale currents connecting the polar ionosphere with the magnetosphere T. Iijima; 31. Ionosphere-magnetosphere mapping of dynamic auroral structures during substorms E. Nielson; 32. Incoherent scatter observations of the auroral ionosphere with the EISCAT radar facility J. Röttger; 33. Ground-based measurements of joule heating rates O. de la Beaujardiére, R. Johnson and V. B. Wickwar; 34. Global observations: a future research thrust in auroral and magnetospheric research D. J. Williams; Index; Colour plates.