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Turbulence, Sediment Transport, Erosion, and Sandbar Beach Failure Processes In Grand Canyon


Abstract This research examines lateral separation zones and sand bar slope stability using two methods: a parallelized turbulence resolving model and full-scale laboratory experiments. Lateral flow separation occurs in rivers where banks exhibit strong curvature, for instance canyon rivers, sharp meanders and river confluences. In the Colorado River, downstream Glen Canyon Dam, lateral separation zones are the principal storage of sandbars. Maximum ramp rates have been imposed to Glen Canyon Dam operation to minimize mass loss of sandbars. Assessment of the effect of restricting maximum ramp rates in bar stability is conducted using multiple laboratory experiments. Results reveal that steep sandbar faces would rapidly erode by mass failure and seep... (more)
Created Date 2015
Contributor ALVAREZ, LAURA V. (Author) / Schmeeckle, Mark W. (Advisor) / Dorn, Ronald I. (Committee member) / Brazel, Anthony J. (Committee member) / Grams, Paul E. (Committee member) / Topping, David J. (Committee member) / Arizona State University (Publisher)
Subject Geography / Geomorphology / Hydrologic sciences / Bank Stability / Dettached Eddy Simulation / Fluvial Geomorphology / Grand Canyon / Sediment Transport / Turbulence
Type Doctoral Dissertation
Extent 176 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note Doctoral Dissertation Geography 2015
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis
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Description Appendix C Video 3.1
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Description Appendix F Video 4.2