Geomorphic Change Detection (GCD) Tutorial

This video was originally developed for a class on close-range remote sensing and serves to inform the viewer on how to use the Geomorphic Change Detection toolset, developed by the Riverscapes Consortium (http://gcd.riverscapes.xyz/), to produce a statistically significant digital elevation model of difference (DoD). The team at the Riverscapes Consortium are doing really great and impactful work. They have also been really helpful whenever I have had questions. Furthermore, their help and tutorial sections (found in the link provided above) are incredibly informative and helpful and go into much greater detail than I could achieve with this video. Please note that I have no affiliations with the Riverscapes Consortium team and have produced this video to help students and researchers run this great tool. Helpful papers include: Bangen, S. G., Hensleigh, J., McHugh, P., and Wheaton, J. M. (2016). Error modeling of DEMs from topographic surveys of rivers using fuzzy inference systems. Water Resources Research, 52(2), 1176–1193. https://doi.org/10.1002/2015WR018299 Kasprak, A., Bransky, N. D., Sankey, J. B., Caster, J., and Sankey, T. T. (2019). The effects of topographic surveying technique and data resolution on the detection and interpretation of geomorphic change. Geomorphology, 333, 1–15. https://doi.org/10.1016/j.geomorph.2019.02.020 Lane, S. N., Westaway, R. M., and Hicks, M. (2003). Estimation of erosion and deposition volumes in a large, gravel-bed, braided river using synoptic remote sensing. Earth Surface Processes and Landforms, 28, 249–271. https://doi.org/10.1002/esp.483 Schaffrath, K. R., Belmont, P., and Wheaton, J. M. (2015). Landscape-scale geomorphic change detection: Quantifying spatially variable uncertainty and circumventing legacy data issues. Geomorphology, 250, 334–348. https://doi.org/10.1016/j.geomorph.2015.09.020 Wheaton, J. M., Brasington, J., Darby, S. E., and Sear, D. A. (2009). Accounting for uncertainty in DEMs from repeat topographic surveys: improved sediment budgets. Earth Surface Processes and Landforms, 35(2), 136–156. https://doi.org/10.1002/esp.1886 Wheaton, J. M., Brasington, J., Darby, S. E., Merz, J., Pasternack, G. B., Sear, D. A., and Vericat, D. (2010). Linking geomorphic changes to salmonid habitat at a scale relevant to fish. River Research and Applications, 26(4), 469–486. https://doi.org/10.1002/rra.1305 Thank you for watching!