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Vanderbilt University +
Nashville +
shawn.m.chartrand@vanderbilt.edu +
Shawn +
Chartrand +
604-808-0146 +
Tennessee +
United States +
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18:23:55, 10 January 2018 +
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Rivers are coupled to tectonic processes t … Rivers are coupled to tectonic processes through surface and rock uplift, regional faulting and temporal variations of clastic sediment supply and runoff. The general way in which rivers respond to each of these drivers is well known. For example, the popular Lane's balance conceptualizes how a river profile will evolve given a change in sediment and/or water supply (or sediment caliber). The timescale over which these changes occur is difficult to predict due in part to local filtering of the upstream supply changes along a river network. The raises the question whether landscape evolution models adequately represent this uncertainty, and whether models capture the underlying physical processes governing the filtering of upstream signals. This knowledge gap is growing in importance as landscape evolution models tend toward higher spatial resolutions. One goal of my future research is to contribute work to this problem, building off of my PhD which offers one means to estimate response timescales. I think this CSDMS workshop provides an excellent opportunity to take the first concrete step toward this goal, and to learn from landscape evolution modeling experts so that the context for the questions raised above is well founded and focused on the true gaps.well founded and focused on the true gaps. +
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18:23:55, 10 January 2018 +
