Paper#: 51
Poster #:
Session Name: Plenary
Room: West Ballroom
Day: Friday
Time: 8:55-9:20 a.m.
Abstract Title: Substorm Expansion Onsets Observed by Cluster
PresentSurname: Nakamura, R.
All Authors: R. Nakamura, W. Baumjohann, H. Noda, G. Paschmann, B. Klecker, P. Puhl-Quinn, J. Quinn, R. Tobert, A. Balogh, H. Reme, H.U. Frey
Abstract : In this paper we study the energy storage and release process in the magnetotail by analyzing substorm intensification events by Cluster during multi-onset substorm on August 12, 2001. The Cluster spacecraft, with their high-inclination orbit, observe enhanced convection and associated thinning of the plasma sheet before the major onset and dipolarization and associated flow events during the expansion phase simultaneously at different locations. Using data from the four spacecraft, we determine the temporal and spatial scales of the substorm disturbances.