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Sand pulses and sand patches on the Colorado River in Grand Canyon

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Grams P.E., Buscombe D., Topping D.J. and Mueller E.R., 2017, Sand Pulses and Sand Patches on the Colorado River in Grand Canyon—extended abstract in Lanzoni, S., Redolfi, M., and Zolezzi, G., eds., RCEM 2017 – Back to Italy—The 10th Symposium on River, Coastal and Estuarine Morphodynamics: Trento-Padova, Italy, September 15-22, 2017, p. 183, http://events.unitn.it/sites/events.unitn.it/files/download/rcem17/rcem-bookofabstract-ebook_0.pdf.

Summary

Alluvial sandbars occur in lateral recirculation zones (eddies) along the Colorado River in Grand Canyon National Park (Schmidt, 1990). Resource managers periodically release controlled floods from the upstream Glen Canyon Dam to rebuild these bars (Grams et al., 2015), which erode during fluctuating dam releases, and by hillslope runoff and wind deflation (Hazel et al., 2010). Because the dam blocks upstream sediment, episodic floods from tributaries provide the only supply to replace eroded sand; and much of this sand originates from a single tributary (Topping et al., 2000). Here, we present new evidence for the downstream translation of the sand component of these sediment inputs as discontinuous sand pulses. Improved understanding [...]

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local-index unknown 70192851
local-pk unknown 70192851

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citationTypeConference Paper
conferenceRCEM 2017 – Back to Italy—The 10th Symposium on River, Coastal and Estuarine Morphodynamics
languageEnglish

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