Other
Scientific paper
Dec 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994jgr....9923591n&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 99, no. A12, p. 23,591-23,601
Other
21
Flow Velocity, Geomagnetic Tail, Magnetic Field Configurations, Magnetic Field Reconnection, Magnetohydrodynamic Flow, Neutral Sheets, Polar Substorms, Spatial Dependencies, Earth Magnetosphere, Explorer 43 Satellite, Explorer 47 Satellite, Explorer 50 Satellite, Geomagnetism, Particle Acceleration, Polarity
Scientific paper
Using IMP 6, 7, and 8 magnetic field and plasma data, we have determined statistical occurrance properties of bulk flow and magnetic field orientation near the midtail neutral sheet. Characteristics of bulk plasma flow and magnetic field significantly change according to the radial distance down the tail. High-speed flow events (v greater than 300 km/s) are essentially restricted to the region tailward of X = -2.5 R(sub E) and are predominatly sunward or tailward. The low-speed flows were nearly equally likely to be in any direction, with the occurace rate of dustward and sunward flow being larger than that of tailward and dawnward flow. Dustward flow occurrence is highest in the region Earthward of X = -2.5 R(sub E), while sunward flow occurrence is highest in the region tailward of X = -2.5 R(sub E). The significance of the dawn-to-dust flow in the near-Earth region obtained in our study supports the idea that there exists a very effective mechanism to accelerate ions in the dawn-to-dust direction and hence the relief of pressure buildup in the near-Earth region. During high-speed flow events the relationship between B(sub Z) polarity and plasma flow direction is largely consistent with that expected from the magnetic reconnenection processes associted with substorms. There are also significant numbers of negative B9sub Z) events that are not associated with tailward flow. Mechanism other than substorm neutral line should therefore also taken into account to explain general B(sub Z) polarity in the midtail region.
Baker Daniel N.
Fairfield Donald H.
Hones Edward W. Jr.
McPherron Robert L.
Mitchell Donald G.
No associations
LandOfFree
Plasma flow and magnetic field characteristics near the midtail neutral sheet does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Plasma flow and magnetic field characteristics near the midtail neutral sheet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plasma flow and magnetic field characteristics near the midtail neutral sheet will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1411768