Proceedings of the 31st ESLAB Symposium, ESA-SP (1998) in press.
Using solar wind particle data from the CELIAS experiment on the SOHO mission, we derived densities of the elements O, Ne, Mg, Si, S, Ca, and Fe, and analyzed their abundance before, during, and after the January 6, 1997, coronal mass ejection event. In the in-terstream and coronal hole regions before and after this event we found typical solar wind abundances for the ele-ments investigated. However, during the passage of the CME and during the passage of the erupted filament the elemental composition differed markedly from typical solar wind. For the passage of the CME and for the pas-sage of the erupted filament a mass-dependent enhance-ment of the elements was found, with a monotonic in-crease toward heavier elements. We observed Si/O and Fe/O ratios of the order of one during these time periods.