  This paper presents a new algorithm for detecting high-speed flow channels in
the polar cap. The algorithm was applied to Super Dual Auroral Radar Network
data, specifically to data from the new Longyearbyen radar. This radar is
located at $78.2^\circ$N, $16.0^\circ$E geographical coordinates looking
north-east, and is therefore at an ideal location to measure flow channels in
the high-latitude polar cap. The algorithm detected $>$500 events over 1 year
of observations, and within this paper two case studies are considered in more
detail. A flow channel on "old-open field lines" located on the dawn flank was
directly driven under quiet conditions over 13 min. This flow channel
contributed to a significant fraction (60%) of the cross polar cap potential
and was located on the edge of a polar cap arc. Another case study follows the
development of a flow channel on newly opened field lines within the cusp. This
flow channel is a spontaneously driven event forming under strong solar wind
driving and is intermittently excited over the course of almost an hour. As
they provide a high fraction of the cross polar cap potential, these
small-scale structures are vital for understanding the transport of magnetic
flux over the polar cap.
