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Does permafrost impart topographic signatu … Does permafrost impart topographic signatures, and how does subsequent warming affect hillslope and channel form? Permafrost controls the depth to immobile soil, and tundra vegetation influences infiltration and erosion thresholds. I will use high-resolution maps of arctic landscapes to examine morphometric properties like hillslope length, curvature and drainage density as functions of climate and vegetation. I will then compare these data to existing models of climate-modulated sediment flux and channel incision in Landlab, exploring the effect of more nuanced representations of permafrost flux laws and hydrology. I will also compare modeled landscapes forced with Pleistocene-Holocene climate to mid-latitude landscape form.ne climate to mid-latitude landscape form. +
joanmarie@psu.edu +
CSDMS 2020 Webinars +
Joanmarie +
Penn State University +
Del Vecchio +
Webinar +
Pennsylvania +
CSDMS Summer Science Series III: Topographic signatures of permafrost processes +
10:00:00, 28 July 2020 +
i8OovyepRlM +
United States +
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23:23:44, 14 July 2020 +
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22:33:33, 11 June 2025 +
Permafrost +
Terrestrial Working Group +
