Using cross-phase analysis on data from the closely spaced magnetometers of the BEAR array, we have obtained meridional frequency-latitude profiles of field line resonances (FLRs) from the inner plasmasphere, across the plasmapause and into the plasmatrough. The location of the plasmapause is indicated by the discontinuity in the frequency-latitude profile and is confirmed by a Kp-dependent model plasmapause position. We show that the cross-phase response from stations separated by 1 L) spanning the plasmapause leading us to conclude that caution must be exercised when interpreting the cross-phase response from pairs of stations at mid-latitudes. ¿ 2001 American Geophysical Union