Characterization of small-scale structures at the magnetopause from ISEE measurements

L. Rezeau (1) , A. Roux (1) , C. T. Russell (2)

1 CETP - Centre d'étude des environnements terrestre et planétaires
2 IGPP - Institute of Geophysics and Planetary Physics [Los Angeles]

High resolution data (covering up to 8 Hz) from the flux gate magnetometers on the two ISEE spacecraft are used to analyze ultralow-frequency (ULF) fluctuations observed at the magnetopause and in the adjacent layers. Intersatellite correlations are computed to show that the same structure can be identified in the fluctuations observed on both spacecraft when the interspacecraft distance is small. Then the possibility of deducing the velocity of the structure from two-point measurements is discussed; it is shown that it can be estimated only in certain cases.

Mots clés: FLUX TRANSFER EVENTS; INTERNATIONAL SUN EARTH EXPLORERS; MAGNETOPAUSE; SATELLITE SOUNDING; DATA CORRELATION; FLUCTUATION THEORY; MAGNETIC SIGNATURES

Domaines: Géophysique [physics.geo-ph]

L. Rezeau, A. Roux, C. T. Russell. Characterization of small-scale structures at the magnetopause from ISEE measurements. Journal of Geophysical Research, 1993, 98 (A1), pp.179-186. ⟨10.1029/92JA01668⟩. ⟨hal-00408545⟩