Channel steepness is a popular metric in most studies of tectonic geomorphology, but the simple and convenient method of defining channels in the first place may have overlooked a serious pitfall.
Journal of Geophysical Research: Earth Surface
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The Largest Ice Thickness Survey of Alaska’s Glaciers
A decade of NASA airborne radar surveys produces the most extensive inventory of glacier ice thickness for Alaska and northwestern Canada to date.
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Small and Large Grains Move Differently in Water
A shift in perspective: flume experiments show that grain entrainment is far more complex than traditional models suggest.
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A Digital Twin for Arctic Permafrost Beneath Roads
A physics-informed digital twin uses high-resolution temperature data to track, update, and predict permafrost conditions beneath an Alaskan embankment road.
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Drone Imagery Reveals Marked Variability in Antarctic Snow Roughness
Multi-temporal UAV oblique photogrammetry reveals significant fine-scale variability in Antarctic snow roughness driven by surface type, measurement scale, model choice, and meteorological conditions.
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Gravity Waves Help Drive Sediment to the Deep Ocean
Laboratory experiments reveal that gravity wave-turbidity current interactions (combined flows) can enhance sediment transport to the deep ocean.
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Choice of Glen’s n Leads to Differing Projections of Ice Sheet Mass Loss
Glen’s Law describes the simple physics of ice flow that underpins ice sheet models, but parameter choices substantially influence the outcome of model projections.
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An Ancient Landscape Beneath the East Antarctic Ice Sheet
Geophysical observations of the subglacial topography of Coats Land reveal a landscape formed by tectonics and fluvial erosion that influenced the formation of the East Antarctic Ice Sheet.
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What’s Under the Water Matters
The fate of barrier islands in presence of sea level rise depends on their underwater shape.
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Why More Rain Doesn’t Mean More Erosion in Mountains
Erosion in mountain-basin systems driven by long-period climate variations is buffered by an erosion saturation effect, which weakens peak erosion and leads to reduced sediment flux.