LARGE-SCALE PROPAGATION PROPERTIES OF AN INTERPLANETARY DISTURBANCE IN ASSOCIATION WITH A "HALO" CORONAL MASS EJECTION ON 27 NOVEMBER 1979

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Propagation properties of an interplanetary disturbance in association with a halo coronal mass ejection (CME), which was observed with the Solwind coronagraph from 08:22 to 09:58 UT on 27 November 1979, are examined utilizing IPS and spacecraft observations. Detailed model-fitting showed that a dip of the propagation speed of the disturbance was situated in the radial direction of the heliospheric current sheet. Quick deceleration of the disturbance along the current sheet is suggested.

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