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dc.contributor.advisorSlattery, Michael C.
dc.contributor.authorLisenby, Peyton Everetten_US
dc.date.accessioned2014-07-22T18:48:57Z
dc.date.available2014-07-22T18:48:57Z
dc.date.created2013en_US
dc.date.issued2013en_US
dc.identifierUMI thesisen_US
dc.identifieretd-05232013-092054en_US
dc.identifierumi-10374en_US
dc.identifiercat-001996977en_US
dc.identifier.urihttps://repository.tcu.edu/handle/116099117/4480
dc.description.abstractChannel morphologies embody the physical reaction between channel substrate, bed material, and flow regime. This study examines reach-scale morphology variability in an ungauged tropical headwater stream. Field morphology classifications are validated through quantifying instream wood distribution and modeling the down-reach hydraulic variation of boundary shear stress and mean stream power. Bifurcated reaches display increased wood abundance and loading, as they provide a means of storage for unattached pieces. This corresponds with the transition from a stepped morphology to a widened, meandering reach that bifurcates around a mid-channel bar, followed by a transition back to a stepped morphology. Hydraulic modeling of two bifurcated reaches demonstrated significant variability in shear stress and stream power in one dimension through these transitions. These results substantiate the effectiveness of coupling field classification schemes with ultra-high resolution topographic surveys when investigating unmonitored streams and they indicate that transitional reaches can punctuate bedform regularity in high-energy drainages.en_US
dc.format.mediumFormat: Onlineen_US
dc.publisher[Fort Worth, Tex.] : Texas Christian University,en_US
dc.relation.ispartofTCU Master Thesisen_US
dc.relation.requiresMode of access: World Wide Web.en_US
dc.relation.requiresSystem requirements: Adobe Acrobat reader.en_US
dc.titleDistinguishing reaches in a tropical headwater stream, Costa Rica: utilizing morphology, instream wood, and terrestrial laser scanning in hydraulic characterizationen_US
dc.typeTexten_US
etd.degree.departmentDepartment of Geology
etd.degree.levelMaster
local.collegeCollege of Science and Engineering
local.departmentGeological Sciences
local.academicunitSchool of Geology, Energy and the Environment
dc.type.genreThesis
local.subjectareaGeological Sciences
etd.degree.nameMaster of Science


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