Lindsay Olinde Jackson School of Geosciences UT- Austin

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Presentation transcript:

Lindsay Olinde Jackson School of Geosciences UT- Austin Does lithology control stream profiles? Case Study in Reynolds Creek, Idaho Lindsay Olinde Jackson School of Geosciences UT- Austin

Outline Background Approach Preliminary Results Questions

- An experiment in channel evolution Reynolds Creek - An experiment in channel evolution

Topography Mechanics CURVATURE + LITHOLOGY

What is curvature? Why do we care? SLOPE SEDIMENT TRANSPORT Convex: + Curvature Concave: -̶ Curvature SLOPE SEDIMENT TRANSPORT rate of sediment breakdown controls profile curvature Slope of the slope. How quickly slope changes. Curvature images: http://www.stratco.com.au/products/roofing_walling/types/CGI_Pre_curving/CGI_Pre_curving.asp

Datasets LiDAR Geologic Map Stream Network Map with geologic map

Datasets Stream Network + Streams of Interest 3D Profile Processing Streams: Batch Dissolve: DONE Profile Curvature of 2m Elevation 3D: Convert Streams to Plot Curvature LiDAR Geologic Map Stream Network + Streams of Interest Map with geologic map

Preliminary Results!

+ curvature Basalt Granite Curvature images: http://www.stratco.com.au/products/roofing_walling/types/CGI_Pre_curving/CGI_Pre_curving.asp

What’s Next Does lithology strongly control profile curvature here? Finish profile curvature plots Between A vs. B Same Within 1 A vs. B

Questions?

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