Statistical and Superposed Epoch Studies of Dipolarization Events Using Data from Wind Perigee Passes

Details Statistical and Superposed Epoch Studies of Dipolarization Events Using Data from Wind Perigee Passes Statistical and Superposed Epoch Studies of Dipolarization Events Using Data from Wind Perigee Passes

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm42c..12s&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SM42C-12

Other

2744 Magnetotail, 2764 Plasma Sheet, 2788 Storms And Substorms

Scientific paper

We will present results from a study of magnetic field data from perigee passes of the Wind spacecraft through the magnetotail from 1995 to 2000. Wind spent over 500 hours in the magnetotail during this time period. Based upon a > 15 degree change in magnetic field inclination, a database was compiled of 65 potential dipolarization events in the near magnetotail at distances of -18 RE < XGSM < -6 RE. Most of the dipolarization events were found to occur within a few RE of the neutral sheet. By studying the locations at which magnetic field dipolarizations were observed in the Wind perigee pass data set, we hope to develop a statistical representation of the azimuthal and radial extent of the substorm current wedge. Substorm onset times based upon AKR observations by the Wind WAVES experiment, geosynchronous observations, Polar images, and ground magnetometer data will be used to perform a superposed epoch study of the radial and azimuthal expansion of the substorm current wedge. Results will be compared to other studies of dipolarizations and the magnetotail current systems.

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