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We present results of the radial velocity (RV) analysis of spectroscopic time-series observations of the roAp star HD 24712 (HR 1217). Only lines of the rare-earth elements (REE) show substantial amplitudes in the RV data. The progressive change of the RV pulsation phase with the optical depth for lines of the same element gives strong evidence for a running wave. The surface abundance distribution should be taking into account in interpreting of the phase shifts between the RV curves for dierent elements. We did not nd phase jumps at the magnetic eld extrema reported earlier by Mkrtichian & Hatzes (2005).

Spectroscopic study of the pulsations in the roAp star HD 24712