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In this paper we focus on flux transfer events (FTEs) and poleward movingauroral forms (PMAFs) in the cusp region, combining data from the EISCATSvalbard radar, SuperDARN HF radars, ground-based optics, and threelow-altitude polar-orbiting spacecraft. During an interval of southwardinterplanetary magnetic field the EISCAT Svalbard radar tracked a train ofnarrow flow channels drifting into the polar cap. One 30-60 km wide flowchannel surrounded by flow running in the opposite direction is studied ingreat detail from when it formed equatorward of the cusp aurora, nearmagnetic noon, until it left the field-of-view and disappeared into the polarcap. Satellite data shows that the flow channel was on open field lines. Theflow pattern is consistent with field-aligned currents on the sides of theflow channel; with a downward current on the equatorward side, and an upwardcurrent on the poleward side. The poleward edge of the flow channel wascoincident with a PMAF that separated from the background cusp aurora anddrifted into the polar cap. A passage of the DMSP F13 spacecraft confirmsthat the FTE flow channel was still discernable over 15 minutes after itformed, as the spacecraft revealed a 30–40 km wide region of sunward flowwithin the anti-sunward background convection. From the dimensions of theflow channel we estimate that the magnetic flux contained in the event wasat least 1 MWb. This data set also shows that Birkeland current filamentsoften seen by low-altitude spacecraft in the cusp/mantle are reallyassociated with individual FTE events or a train of FTEs in progress. As theregion 0 or cusp/mantle current represents the statistical averageconsistent with the large-scale flow pattern, we therefore introduce a newterm – FTE currents – to denote the unique pair of Birkeland currentsheets that are associated with individual meso-scale FTE flow disturbances.The poleward moving auroral forms (PMAFs), often referred to in theliterature, are the optical signature of the upward FTE current.  <b>Keywords.</b> Magnetospheric physics (Current systems;Magnetopause, cusp and boundary layers) – Ionosphere(plasma convection

Multi-instrument mapping of the small-scale flow dynamics related to a cusp auroral transient