ULF pulsations in the magnetosphere reviews from the special sessions on geomagnetic pulsations at xvii General Assembly of the International Union for [i.e. of] Geodesy and Geophysics, Canberra, 1979, December

Physical and chemical studies of the earth and planets along with their sur­ roundings are now developing very rapidly. As these studies are of essentially international character, many international conferences, symposia, seminars and workshops are held every year. To publish proceedings of these meetings is of course important for tracing development of various disciplines of earth and plane­ tary sciences though publishing is getting fast to be an expensive business. It is my pleasure to learn that the Center for Academic Publications Japan and the Japan Scientific Societies Press have agreed to undertake the publication of a series "Advances in Earth and Planetary Sciences" which should certainly become an important medium for conveying achievements of various meetings to the aca­ demic as well as non-academic scientific communities. It is planned to publish the series mostly on the basis of proceedings that appear in the Journal of Geomagnetism and Geoelectricity edited by the Society of Terrestrial Magnetism and Electricity of Japan, the Journal of Physics of the Earth by the Seismological Society of Japan and the Volcanological Society of Japan, and the Geochemical Journal by the Geochemical Society of Japan, . although occasional volumes of the series will include independent proceedings. Selection of meetings, of which the proceedings will be included in the series, will be made by the Editorial Committee for which I have the honour to work as the General Editor. Physical and chemical studies of the earth and planets along with their surƯ roundings are now developing very rapidly. As these studies are of essentially international character, many international conferences, symposia, seminars and workshops are held every year. To publish proceedings of these meetings is of course important for tracing development of various disciplines of earth and planeƯ tary sciences though publishing is getting fast to be an expensive business. It is my pleasure to learn that the Center for Academic Publications Japan and the Japan Scientific Societies Press have agreed to undertake the publication of a series "Advances in Earth and Planetary Sciences" which should certainly become an important medium for conveying achievements of various meetings to the acaƯ demic as well as non-academic scientific communities. It is planned to publish the series mostly on the basis of proceedings that appear in the Journal of Geomagnetism and Geoelectricity edited by the Society of Terrestrial Magnetism and Electricity of Japan, the Journal of Physics of the Earth by the Seismological Society of Japan and the Volcanological Society of Japan, and the Geochemical Journal by the Geochemical Society of Japan, . although occasional volumes of the series will include independent proceedings. Selection of meetings, of which the proceedings will be included in the series, will be made by the Editorial Committee for which I have the honour to work as the General Editor Front Matter....Pages i-ix Latitudinal and Longitudinal Variation of Pc 4, 5 Pulsations and Implications Regarding Source Mechanisms....Pages 1-15 Observations of Pc Pulsations in the Magnetosphere: Satellite-Ground Correlation....Pages 17-39 Multisatellite Observations of Geomagnetic Pulsations....Pages 41-55 Substorm Associated Micropulsations at Synchronous Orbit....Pages 57-73 Low Frequency Pulsation Generation by Energetic Particles....Pages 75-88 Solar Wind Control of Daytime, Midperiod Geomagnetic Pulsations....Pages 89-110 Pulsation Structure in the Ionosphere Derived from Auroral Radar Data....Pages 111-127 Damping and Coupling of Long-Period Hydromagnetic Waves by the Ionosphere....Pages 129-139 The Rotation of Hydromagnetic Waves by the Ionosphere....Pages 141-145 Back Matter....Pages 147-153