Results 181 to 190 of about 12,498 (209)
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Stochastic analysis of bedform dimensions
Journal of Hydraulic Research, 1987Various statistical methods for analyzing bedforms are evaluated. Time series models offer attractive possibilities to quantify relationships between bedforms and flow parameters, and are applied to flume and prototype data.
J. R. Moll +2 more
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SEPM Journal of Sedimentary Research, 1975
ABSTRACT This paper presents results from one hundred and twenty samples which were collected from sand ripples in the Algerian Sahara. Ripples were found that are transitional between small aeolian ripples (wavelength 1 cm-20 cm) formed in fine unimodal sand, and larger ripples (wave length 20 cm-20 m) formed in coarse bimodal sand; these are commonly
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ABSTRACT This paper presents results from one hundred and twenty samples which were collected from sand ripples in the Algerian Sahara. Ripples were found that are transitional between small aeolian ripples (wavelength 1 cm-20 cm) formed in fine unimodal sand, and larger ripples (wave length 20 cm-20 m) formed in coarse bimodal sand; these are commonly
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2016
The physics of internal waves in the density-stratified deep sea is reviewed with the aim of understanding the waves’ potential effects on undular bedforms, ‘sediment waves’, at the seafloor. Such bedforms occur mainly on continental slopes. Sloping topography is also a prerequisite for internal wave breaking, which is the dominant process for sediment
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The physics of internal waves in the density-stratified deep sea is reviewed with the aim of understanding the waves’ potential effects on undular bedforms, ‘sediment waves’, at the seafloor. Such bedforms occur mainly on continental slopes. Sloping topography is also a prerequisite for internal wave breaking, which is the dominant process for sediment
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Bedform spacing from defect dynamics
Geology, 1999Spacing is a time-varying characteristic of bedform fields deriving from the behavior of defects (ends of crest lines) in the bedform pattern. In a model based on this hypothesis, crest line length is lost and spacing increases because bedform defects, which are smaller in height and faster migrating than surrounding bedform crest lines, merge with ...
B. T. Werner, G. Kocurek
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Contourite Drifts and Associated Bedforms
2017Contourites, also known as alongslope deposits, are sediments that have been deposited or significantly affected by the persistent action of contour (bottom) currents. Contourite drifts are the large-scale morphological expression of contourite deposition, up to 106 km2 in area and >1 km in thickness.
Ibimina Esentia +2 more
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Bedforms as Self-organized Patterns
2016The formation and evolution of regular bedform patterns occurs in response to complex interactions between flow, sediment transport and evolving morphology. The assumption that the emergence of regular patterns is governed by non-linear dissipative feedbacks (the self-organization theory) has helped to provide simple and insightful explanations for the
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