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Showing 1 to 10 of 10 for “"sediment waves"”.
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Three-dimensional acoustic propagation through shallow water internal, surface gravity and bottom sediment waves
… low frequency acoustic interaction with internal waves, bottom sediment waves and surface swell waves that are often observed in shallow waters and on continental slopes. A simple idealized model of the ocean waveguide is used to analytically study the properties of acoustic normal modes and their …
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Three-dimensional acoustic propagation through shallow water internal, surface gravity and bottom sediment waves
… low frequency acoustic interaction with internal waves, bottom sediment waves and surface swell waves that are often observed in shallow waters and on continental slopes. A simple idealized model of the ocean waveguide is used to analytically study the properties of acoustic normal modes and their …
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Studies of deep-sea sedimentary microtopography in the North Atlantic Ocean
… These bed forms, all developed in cohesive sediments, include current ripples (spacings of tens of centimeters, formed transverse to the flow), longitudinal triangular ripples (spacings of meters, formed in sandy muds and parallel to the flow), furrows (spacings of tens to 100's of meters, …
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Turbidity current processes and deposits on the northwest African Margin
… African margin is affected by a wide variety of sedimentary processes, including pelagic/hemipelagic background sedimentation, alongslope bottom currents, and downslope gravity flows. A large section of the margin can be classified as a fine-grained clastic slope apron, although the presence of …
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Bedforms and Gravity Underflows in Marine Environments
… of (1) vast fields of long, upslope-migrating sediment waves that appear covering extensive areas in continental rises or submarine-channel levees, and (2) systems of subparallel, longitudinal gullies that are commonly observed in continental slopes. Combined analytical and experimental …
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Flow and sediment movement in stepped channels
… and clear water flow, clear water scour, and sediment transport tests undertaken for a range of discharges and channel slopes. Three distinct flow regimes were observed for the clear water flow and clear water scour tests. They were stable tumbling flow, unstable tumbling flow, and shooting …
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The influence of steps topography on the behavior of density currents – a numerical study
… structures interpreted as cyclic steps, or sediment waves, along the bottom of deep-sea canyons and channel levees. These bed features are formed by turbidity currents, and in turn, influence the flow characteristics of the density currents and their sediment transport behavior, thus …
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Sediment wave-induced channel evolution following the 2006 avulsion of the Suncook River in Epsom, New Hampshire
Large volumes of sediment can be released into a river when an avulsion carves a new channel in the landscape. Gilbert (1917) described the evolution of a similar pulse of material from mining along the Sacramento River, California as a sediment wave. Sediment waves are transient accumulations of …
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SAMPLING AND MODELING OF SEDIMENT TRANSPORT AND RESERVOIR EROSION FOLLOWING DAM REMOVAL: MILLTOWN DAM, MONTANA
… bedload transport in combination with suspended sediment and discharge data collected by the USGS illustrate the rates, magnitudes and processes by which reservoir sediment evacuated the Milltown Reservoir after the 2008 removal of Milltown Dam from just downstream of the confluence of the …
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SAMPLING AND MODELING OF SEDIMENT TRANSPORT AND RESERVOIR EROSION FOLLOWING DAM REMOVAL: MILLTOWN DAM, MONTANA
… bedload transport in combination with suspended sediment and discharge data collected by the USGS illustrate the rates, magnitudes and processes by which reservoir sediment evacuated the Milltown Reservoir after the 2008 removal of Milltown Dam from just downstream of the confluence of the …