Laboratory observations on meltwater meandering rivulets on ice

Abstract. We present a set of observations on meltwater meandering rivulets ice and compare them (qualitatively quantitatively) to morphologies commonly found in channels different media. The include data from planned centimeter-scale experiments incidental self-formed millimeter-scale rivulets. Our show pulsed lateral migration features, undercut banks overhangs, meander bend skewness, cutoffs. also well with planform characteristics alluvial rivers (sinuosity, wavelength-to-width ratios, fatness skewness). discuss the (ir)relevance scale our experiments, which, spite being laminar flow regime likely affected by surface tension effects, are capable shedding light into processes driving formation evolution supraglacial channels. suggest that sinuosity growth is function velocity interplay between vertical incision driven temperature differences ice. In absence recrystallization (depositional analog rivers), bends more be downstream-skewed lower sinuosities.