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Showing 1 to 20 of 40 for “"sinuosity"”.
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Effects of Stream Order and Data Resolution on Sinuosity Using GIS
… focuses on estimation and analysis of stream sinuosity using GIS. Fifty-five streams including 13 streams of order 0, 17 streams of order 1, 15 streams of order 2 and 10 streams of order 3 in Virginia were considered. Several GIS datasets from various sources, including the Virginia Base …
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High- and low-sinuosity stream deposits of the Sentinel Butte Formation (Paleocene) McKenzie County, North Dakota
<p>High-sinuosity channel deposits in the Sentinel Butte Formation occur as elongate, tabular beds of sand that fine upward from an erosional base. The sand beds contain epsilon cross-stratification, within which stratification changes upward from large-scale trough crossstratification to …
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The geometry of some Beaufort group sandstones and its relationship to uranium mineralisation
… called: A) straight channel sandstones, B) low sinuosity channel sandstones and C) transitional sandstones can be identified, in what has previously been considered as high sinuosity channel facies association sediments. Palaeocurrent analysis has demonstrated that the transitional sandstones …
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Heterogeneity, paleohydrology, and 3D facies architecture of ancient point bars, Ferron Sandstone, Notom Delta, South-central Utah
… strata of large scale foresets and the channel sinuosity (1.01-1.44.) measured from the paleographic map, the formative river of the point bar complex was interpreted to be a low sinuosity river. The point bar complex consists of four successive component point bars and shows a migration pattern …
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Small scale hydrogeomorphic features influence macroinvertebrate food webs in two Great Plains rivers
… measure of consumer niche breadth. I found river sinuosity and percent fine grain sediment to have a large influence on the food web. Increasing sinuosity was associated with a decrease in the stable isotope composition (δ13C) of the entire food web and trophic diversity (p=0.038, R2=31.1%), but …
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Long-term Geomorphic Effects of the Glines Canyon Dam Removal on the Elwha River, Washington, USA
… parameters: in-channel large wood, main channel sinuosity, channel braiding, and sedimentation. High-resolution imagery from 2012-2020 was used to map large wood and digitize main and secondary river channels, and field surveys were completed at study sites to assess sediment-size distribution …
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Marine offshore to alluvial plain transitions within the "Chemung"-Hampshire interval (Upper Devonian) of the southern central Appalachians
… predominantly of cycles interpreted as low-sinuosity braided stream deposits with a lesser abundance of cycles deposited by high-sinuosity meandering streams and high-energy sheetfloods. Low depositional slopes were associated with the alluvial plain. Braiding, however, was probably due to …
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Effect of Urbanization on the Hyporheic Zone: Lessons from the Virginia Piedmont
… (vertical undulation of thalweg, channel sinuosity) as metrics of the potential for hyporheic exchange (hyporheic potential). Our results include bivariate plots that relate urbanization (e.g., total percent impervious) with hyporheic potential at several spatial scales. For example, at …
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A nonlinear river meandering model and its incorporation in a landscape evolution model
… compound bend formation. New statistical stream sinuosity and spatial coordinate variation measures are applied to both natural and model streams and reveal secondary sinuosities arising from compound bend formation in both cases. Scroll bar topography and channel bank roughness are studied in …
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Depositional environments of the upper part of the Sentinel Butte Formation, southeastern McKenzie County, North Dakota
… been deposited by lateral accretion in a high-sinuosity stream. Paleo current indicators are parallel to the long axis of the sand bed. In this bed are bodies of interbedded silt and clay that are interpreted as channel plug deposits. Epsilon cross-strata are common. Cross-stratification grades …
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Analysis of deformation bands in the Aztec Sandstone, Valley of Fire State Park, Nevada
… than intersecting the other sets. Despite this sinuosity, these bands have consistent orientations and are parallel with each other from end to end; Relationships with other structures in the vicinity suggests deformation bands formed in response to regional compression.
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Assessing the magnitude and frequency of hydrological processes and their effect on threshold channel morphology, North Bosque River, TX.
… 0.5 to 0.75 m/y. The NBR's slope increased and sinuosity decreased from 1995 to 2019. These morphological and hydrological changes characterize the NBR's response to a historical flood event.
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Dynamics of river meanders: bankfull geometry and planimetric configuration
… the bend skewing angle, and the bend and total sinuosity, thus providing a suitable tool to predict the long-term behaviour of a meandering river for different combination of the external parameters (e.g. flow and sediment inputs, valley slope, grain size). To exploit it, I specifically …
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Sediment Supply Effects On thePlio-Pleistocene Stratigraphic Evolution of the Douala Basin, West Africa
… of late Pleistocene age that exhibit low sinuosity. The vertical stacking and lateral variations along these channels suggest that the initial seafloor topography was a major factor in the development of their current architectural style.</p>
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Depositional Model of a Late Cretaceous Dinosaur Fossil Concentration, Lance Formation
… environment and with a relatively low sinuosity meandering stream environment with periodic swampy conditions in the flood plain. The bonebed is proposed to be a result of a mass flow process resulting from the fluidization and mobilization of sediment due to seismic activity.</p>
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Aplicação de índices geomórficos para análise morfológica e neotectônica da bacia do Rio Marés – PB.
… as well as density,entropy, control, sinuosity, angularity, jointangle, and asymmetry. The geomorphic indices applied totheneotectonicanalysiswereHeight valley, of the stream-gradient índex (slope x length) and Asymmetric Factor (AF). Thevalues obtainedand the morphological …
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The Geomorphic Influence of Agricultural Land Use on Stream Hydraulics and Biological Function
… and hydraulic properties including slope, sinuosity, sediment size, and transient storage extent. However, differences cannot be attributed to land use alone. Distinct disparity in slope suggests that many of the categorical differences between stream types may also reflect valley scale …
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Paleoenvironmental Variability across the Cretaceous-Tertiary Boundary in the Alberta Foreland Basin, as Interpreted from Fluvial Deposits and Paleosols, Red Deer River Valley, Alberta, Canada.
… is associated with an increase in channel sinuosity, and poorly drained, gleyed, coal-capped paleosols. The KT boundary is located three meters above the tectono-stratigraphic transition from amalgamated, braided fluvial systems with well-drained paleosols to accretionary, meandering …
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SEDIMENTARY ARCHITECTURE AND INTERNAL HETEROGENEITY OF TURBIDITE CHANNEL-LEVEE DEPOSITS: THE TACHRIFT TURBIDITE SYSTEM (LATE TORTONIAN, TAZA-GUERCIF BASIN, NE MOROCCO)
… fill conduits that range from straight to low-sinuosity. The second style refers to 'Laterally accreting channels,' which exhibit high sinuosity with asymmetrical facies distributions and geometries, along with lateral migration, reflecting lower energy conditions. Both studied Complexes 5 and …
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Developing a rapid method for assessing the physical stability of streams in Minnesota's Agassiz beach ridges
… riparian buffer, (3) access to floodplain, (4) sinuosity, (5) degree of incision, (6) bank stability, and (7) incipient particle diameter and channel material. The method is generally applicable to wadeable streams throughout the Minnesota glacial Lake Agassiz beach ridges. This assessment is …
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