Kauristie, K.,
Co-Authors: T I Pulkkinen, D N Baker, N E Turner, L A Frank, J B Sigwarth, H Singer, T A Fritz, J B Blake, G D Reeves, S Kokubun, and R Nakamura, C T Russell, and H. Kawano,
Title: Multispacecraft study of solar wind-magnetosphere coupling during an isolated substorm event,
Reference: AGU Fall Meeting, San Francisco, CA, 15-19 December, 1996.
Reference Type: Contributed Talk
CEPPAD: true
CAMMICE: false
RAPID: false
Abstract:
In spite of the numerous earlier investigations, the details of the solar wind energy input to the magnetosphere and its release in the form of substorms remain poorly understood. The suite of satellites in the International Solar Terrestrial Program allows the study of these phenomena to an unprecedented accuracy: Here we study an isolated substorm event on May 15, 1996, where the interplanetary magnetic field and solar wind plasma properties were recorded by IMP-8 and WIND satellites, the near-Earth plasma environment was monitored by several geostationary satellites and GEOTAIL at about 10 Re radial distance, and POLAR passed through the dayside cusp to the high-latitude polar cap and was imaging the evolution of the auroral oval before and at the time of the substorm onset. The substorm event followed a prolonged period of northward IMF; we study the energy input into the magnetosphere and the growth phase evolution. Furthermore, the substorm expansion took ! place in several steps; we investigate the relative role of the solar wind variations and internal tail and/or ionospheric to the step-like evolution. Special session SM01 Index terms 2788,2784,2740
