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- W2336308917 abstract "Abstract Supraglacial stream networks incise via thermal erosion of underlying ice, reflecting a balance between localized fluvial incision and dynamic topography from underlying ice flow. We analyze high‐resolution digital elevation models of the ice surface and bedrock in the southwest Greenland Ice Sheet from 1000‐1600 m elevation to quantify the importance of fluvial erosion. At wavelengths greater than ice thickness, bedrock dominates surface topography so supraglacial drainage basins are fixed spatially. At smaller wavelengths, fluvial erosion significantly affects topography. Stream longitudinal profiles exhibit positive mean curvature and consistent power law scaling between local channel slope and drainage area, suggestive of adjustment toward topographic steady state. We interpret these observations with a model for fluvial thermal erosion on top of a flowing ice substrate that predicts concave up steady state longitudinal profiles, where average concavity is most sensitive to melt rate and the relative magnitudes of ice flow and fluvial erosion." @default.
- W2336308917 created "2016-06-24" @default.
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- W2336308917 date "2016-03-28" @default.
- W2336308917 modified "2023-09-26" @default.
- W2336308917 title "Fluvial supraglacial landscape evolution on the Greenland Ice Sheet" @default.
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- W2336308917 doi "https://doi.org/10.1002/2016gl067697" @default.
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