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Turbulence Processes Within Turbidity Currents
Annual Review of Fluid Mechanics, 2021Sediment-laden gravity currents, or turbidity currents, are density-driven flows that transport vast quantities of particulate material across the floor of lakes and oceans. Turbidity currents are generated by slope failure or initiated when a sediment-laden flow enters into a lake or ocean; here, lofting or convective sedimentation processes may ...
Wells, Mathew G., Dorrell, Robert M.
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Self-accelerating turbidity currents
Journal of Fluid Mechanics, 1986Approximate layer-averaged equations describing the mechanics of turbid underflows are derived. Closure of the equations describing the balance of fluid mass, sediment mass, and mean flow momentum provides for the delineation of a three-equation model.
Parker, Gary +2 more
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EAGE Research Workshop - From Seismic Interpretation to Stratigraphic and Basin Modelling, Present and Future, 2006
Algorithms for modelling of turbidity currents in three dimensions, to assist in the exploration of poorly imaged deposits, are described and examples given of their use. Key aspects of algorithm design are:- 1. Algorithm efficiency. Program must be capable of accurately modelling currents and their deposits with good resolution and on small computers.
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Algorithms for modelling of turbidity currents in three dimensions, to assist in the exploration of poorly imaged deposits, are described and examples given of their use. Key aspects of algorithm design are:- 1. Algorithm efficiency. Program must be capable of accurately modelling currents and their deposits with good resolution and on small computers.
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Oblique reflection of turbidity currents
Geology, 1991Turbidity currents meeting obstacles, for example, the margins of a confined basin, are subject to reflection. The consequent change in flow direction is expressed in the sequence of depositional structures of the resulting bed of sediment. Putative examples of orthogonal reflection have been described, based on 180° opposed current directions.
Ben Kneller +3 more
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Contour Currents and Turbidity Currents: ABSTRACT
AAPG Bulletin, 1968Turbidity currents transport sediments downslope and account for many graded sequences included in displaced clastic sediment embedded in deep-water deposits. Contour currents flow parallel with the isobaths and transport fine sediments for thousands of miles along the continental margins.
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Ambient noise from turbidity currents
The Journal of the Acoustical Society of America, 2017Sediment mass transport from the Squamish River delta into the adjacent fjord (Howe Sound, British Columbia) is dominated by discrete turbidity current events which have incised semi-permanent channels on the delta front and out onto the prodelta. Acoustic data were collected in the spring of 2013, including both active and passive systems.
Matthew Hatcher +2 more
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Turbidity Currents and Their Deposits
Annual Review of Fluid Mechanics, 2010The article surveys the current state of our understanding of turbidity currents, with an emphasis on their fluid mechanics. It highlights the significant role these currents play within the global sediment cycle, and their importance in environmental processes and in the formation of hydrocarbon reservoirs.
Eckart Meiburg, Ben Kneller
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Flow structure in turbidity currents
Journal of Hydraulic Research, 1996AThis article presents a series of experiments with turbidity currents using two different types of sediments. During these experiments, the distributions of the velocity and of the concentration were measured simultaneously at three stations. The results show that the nondimensional velocity distribution is relatively insensitive to large variations ...
M.S. Altinakar +2 more
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Turbidity-Current Experiments: ABSTRACT
AAPG Bulletin, 1966Experiments were performed in the W. M. Keck Laboratory, California Institute of Technology, using a lucite channel 5 meters long, 50 cm. deep, and 15.4 cm. wide. Turbidity-current "surges" were produced by releasing suspensions of plastic beads from a lock at one end of the channel.
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Hydraulic Jumps in Turbidity Currents
Geological Society of America Bulletin, 1971If uniform flow conditions are approached, turbidity currents should be supercritical (Froude number greater than unity) while passing through submarine canyons, and subcritical (Froude number less than unity) in the upper submarine fan channel. The change in flow regime requires that the current pass through a hydraulic jump in the vicinity of the ...
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