Bed-material transport estimated from channel morphodynamics: Chilliwack River, British Columbia

The lower main channel of the Fraser River, British Columbia, is a sand-bed, salt-wedge estuary in which variations in velocity, discharge, and bedform characteristics are contolled by river discharge and the tides. Bed-material composition remains consistent over the discharge season and in the long term. Changes in bedform height and length follow but lag behind seasonal fluctuations in river discharge. Migration rates of bedforms respond more directly to river discharge and tidal fall than do height and length. Bedform characteristics were utilized to estimate bedload transport in the estuary, and a strong, direct, but very sensitive relationship was found between bed load and river discharge. Annual bedload transport in the estuary is estimated to be of the order of 0.35 Mt in 1986. Bedload transport in the estuary appears to be higher than in reaches upstream, possibly because of an increase in sediment movement along the bed to compensate for a reduction in suspended bed-material load produced by tidal slack water and the salt wedge.

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Channel change and bed-material transport in the Lower Chetco River, Oregon

Scientific Investigations Report ◽

10.3133/sir20105065 ◽

2010 ◽

Cited By ~ 2

Author(s):

J. Rose Wallick ◽

Scott W. Anderson ◽

Charles Cannon ◽

Jim E. O'Connor

Keyword(s):

Material Transport ◽

Channel Change ◽

Bed Material

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Test of selected bed-material load transport models: Nottawasaga River, Ontario

Canadian Journal of Civil Engineering ◽

10.1139/l94-083 ◽

1994 ◽

Vol 21 (5) ◽

pp. 770-777 ◽

Cited By ~ 5

Author(s):

T. J. Chandler ◽

R. A. Kostaschuk

Keyword(s):

Sediment Transport ◽

Engineering Application ◽

Model Performance ◽

Material Transport ◽

Flow Strength ◽

Transport Models ◽

Data Scatter ◽

Load Transport ◽

Material Load ◽

Bed Material

Predictions from 13 bed-material load sediment transport models are compared with 19 measurements of bed-material transport in Nottawasaga River, Ontario, using summary plots and geometric statistics. Model selection is based on recent engineering application and suitability for the flow and sediment conditions of the river. The models of Laursen (1958) and Yang (1979) perform best, followed by those of Ackers and White (1973). The models of Van Rijn (1984), Maddock (1976), Karim and Kennedy (1983), Brownlie (1981), and Yang (1973) have considerable data scatter. The models of Engelund and Hansen (1967) and Shen and Hung (1972) are the poorest predictors. Poor model performance is primarily due to overestimation of flow strength needed for particle entrainment and an excessively steep slope in the relations between flow strength and sediment transport. Key words: bed-material load transport models, test, Nottawasaga River.

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Revisiting the morphological method in two‐dimensions to quantify bed‐material transport in braided rivers

Earth Surface Processes and Landforms ◽

10.1002/esp.4633 ◽

2019 ◽

Vol 44 (11) ◽

pp. 2251-2267 ◽

Cited By ~ 9

Author(s):

Gilles Antoniazza ◽

Maarten Bakker ◽

Stuart N. Lane

Keyword(s):

Two Dimensions ◽

Material Transport ◽

Morphological Method ◽

Braided Rivers ◽

Bed Material

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Bed material transport in the Virgin River, Utah

Water Resources Research ◽

10.1029/1999wr900257 ◽

2000 ◽

Vol 36 (2) ◽

pp. 585-596 ◽

Cited By ~ 35

Author(s):

E. D. Andrews

Keyword(s):

Material Transport ◽

Virgin River ◽

Bed Material

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Sand-wave immobility and the internal master bedding of sand-wave deposits

Geological Magazine ◽

10.1017/s0016756800028545 ◽

1980 ◽

Vol 117 (5) ◽

pp. 437-446 ◽

Cited By ~ 13

Author(s):

J. R. L. Allen

Keyword(s):

Sand Wave ◽

Periodic Part ◽

Material Transport ◽

Sand Waves ◽

Bottom Boundary ◽

Stratigraphic Record ◽

Bottom Boundary Layers ◽

Bed Material ◽

Steady Velocity

SummarySand waves are such comparatively immobile transverse bedforms because they occur in tide-induced oscillatory bottom boundary layers typified by a steady velocity-component that generally is small compared to the amplitude of the periodic part. Consequently, the net bed-material transport rates, responsible for the long-term translation of the sand waves, typically are very small compared with the larger of the instantaneous rates. Sand waves should, therefore, be marked internally by series of erosional or, under restricted circumstances, non-depositional master bedding surfaces, each such surface, together with an associated comparatively thin sediment increment, being attributable to one sand-driving tide. Studies of modern sand waves, and investigations in the stratigraphic record, lend support to this conclusion. A further consequence of the regime of intense reworking under which sand waves exist is that their component grains should be in all ways more mature, other things being equal, than particles transported the same net distance by rivers.

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