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Experimental Study of the Role of Grain Size in Erosion of Bedrock Channels by Abrasion


Abstract The morphology of mountainous areas is strongly influenced by stream bed incision rates, but most studies of landscape evolution consider erosion at basin scales or larger. The research here attempts to understand the smaller-scale mechanics of erosion on exposed bedrock channels in the conceptual framework of an established saltation-abrasion model by Sklar and Dietrich [2004]. The recirculating flume used in this experiment allows independent control of bed slope, water discharge rate, sediment flux, and sediment grain size – all factors often bundled together in simple models of river incision and typically cross-correlated in natural settings. This study investigates the mechanics of erosion on exposed bedrock channels caused by abrasio... (more)
Created Date 2016
Contributor Adams, Mark Andrew (Author) / Whipple, Kelin (Advisor) / Heimsath, Arjun (Committee member) / Schmeeckle, Mark (Committee member) / Arizona State University (Publisher)
Subject Geomorphology / Geology / Hydrologic sciences / abrasion / erosion / experimental / flume / saltation / shear stress
Type Masters Thesis
Extent 124 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note Masters Thesis Geological Sciences 2016
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis