Electric field measurements in the solar wind,bow shock,magnetosheath, magnetopause,and magnetosphere |
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| Authors: | F S Mozer R B Torbert U V Fahleson C-G Fälthammar A Gonfalone A Pedersen |
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| Institution: | (1) Physics Department and Space Sciences Laboratory, University of California, Berkeley, Calif., USA;(2) Department of Plasma Physics, The Royal Institute of Technology, Stockholm, Sweden;(3) Space Science Department, European Space Agency, Noordwijk, The Netherlands |
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| Abstract: | Electric field measurements are reported at 11 magnetopause crossings that occurred during a single in-bound ISEE-1 satellite pass near a local time of 10 30. In combination with magnetic field data, these measurements show the existence of electric field components tangential to the actual magnetopause in the frame of rest of the magnetopause on every crossing of the current carrying layers associated with the 11 magnetopause traversals. These tangential electric field components were oriented with respect to the magnetopause sheet currents such that there was an electrical power dissipation of between 30 and 110 W km-2 on 10 of the 11 crossings. These results are in agreement with requirements of reconnection theories. Histograms of the normal electric field components and of the orientation, velocity, and thickness of the current carrying layer are presented. Suggestions of the existence of a parallel electric field in the magnetosheath near the magnetopause and of propagation of large amplitude waves along the magnetopause are also made. |
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