A MODEL FOR THE DISTANT TAIL FIELD - ISEE-3 REVISITED

We construct a simple model for the distant (R > 40 R(E)) magnetotail using data from the ISEE 3 magnetic field instrument. The data are div ided into plasma sheet and lobe categories using the plasma measuremen ts. We present the average behavior of the field in various projection s, and show that a relatively simple mathematical model can be used to describe the distant tail magnetic field. The model results are in go od accordance with previously published GEOTAIL observations.