Abstract
AbstractThe bursty bulk flows observed by Baumjohann and Paschmann, and Angelopoulos et al. have been claimed by Chen and Wolf as bubbles in the Earth's plasma sheet. Most of the major observed characteristics of the bursty bulk flows (hereafter abbreviated as BBFs) can be interpreted naturally in terms of bubble picture. In the bubble model, bubbles carry a great percentage of the total potential drop in the ionosphere. Hereby we can estimate the Hall current around a bubble and its disturbance on the ground magnetic field. From the comparison with the characteristics of BBFs observed by the Scandinavian Magnetometer Array, a very good general agreement between the two disturbances can be seen. This implies that BBFs are very likely just the bubbles proposed by Chen and Wolf.
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