Results 1 to 10 of about 12,498 (209)
First wide-angle view of channelized turbidity currents links migrating cyclic steps to flow characteristics [PDF]
Nature Communications, 2016 The basal structure of turbidity currents and their association with crescent-shaped bedforms has not been observed at the field scale. Here, the author presents views of turbidity currents moving over and modifying such bedforms in a manner consistent ...
John E. Hughes Clarke
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Radiotelemetry reveals the dependence of inland tern breeding and foraging habitats on ADCP-identified sediment aggradation reaches in lowland rivers [PDF]
Scientific ReportsThe largest rivers in developed countries have usually been turned into waterways by straightening them and removing large bedforms hampering navigation.
Dorota Kwaśna +8 more
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Irregularity of bedform dimensions [PDF]
, 2007 Measured bed elevation profiles show that bedforms are far from regular. Even under controlled steady flow conditions in laboratory flumes bedforms are irregular in size, shape and spacing. Here we present a new Bedform Tracking Tool to determine the (stochastics of) bedform characteristics in an objective manner.
van der Mark, C.F. +2 more
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Formation of ribbed bedforms below shear margins and lobes of palaeo-ice streams [PDF]
The Cryosphere, 2021 Conceptual ice stream land systems derived from geomorphological and sedimentological observations provide constraints on ice–meltwater–till–bedrock interactions on palaeo-ice stream beds. Within these land systems, the spatial distribution and formation
J. Vérité +9 more
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Remote Sensing, 2022 Bedforms are key components of Earth surfaces and yet their evaluation typically relies on manual measurements that are challenging to reproduce. Several methods exist to automate their identification and calculate their metrics, but they often exhibit ...
Ulysse Lebrec +4 more
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Frontiers in Environmental Science, 2022 Among numerous flow resistance formulae for sand-bed channels, this study selected five for evaluation and in order to cover flow conditions in sand-bed river channels as widely as possible, a total of 1,636 sets of field measures were collected from the
Hao Peng +5 more
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Relating the Flow Processes and Bedforms of Steady-State and Waning Density Currents
Frontiers in Earth Science, 2020 The interaction between turbidity currents and mobile substrates can lead to the development of different types of bedforms. Although much research has been conducted on bedform development beneath open channel flows, research into bedform development ...
Isabel de Cala +8 more
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Exploring Explanations of Subglacial Bedform Sizes Using Statistical Models. [PDF]
PLoS ONE, 2016 Sediments beneath modern ice sheets exert a key control on their flow, but are largely inaccessible except through geophysics or boreholes. In contrast, palaeo-ice sheet beds are accessible, and typically characterised by numerous bedforms.
John K Hillier +5 more
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Understanding snow bedform formation by adding sintering to a cellular automata model [PDF]
The Cryosphere, 2019 Cellular-automata-based modelling for simulating snow bedforms and snow deposition is introduced in this study. The well-known ReSCAL model, previously used for sand bedforms, is adapted for this purpose by implementing a simple sintering mechanism.
V. Sharma +4 more
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Discovering the Fine-Scale Morphology of the Gulf of Cádiz: An Underwater Imaging Analysis
Journal of Marine Science and Engineering, 2022 The dense and deep water flow that leaves the Mediterranean Sea to the Atlantic flows through the upper and middle slope of the Gulf of Cádiz as a powerful bottom stream that models and interacts with bathymetry.
Raúl Jiménez-Romero +4 more
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