Suspended sediment fluxes in a tidal wetland: Measurement, controlling factors, and error analysis

Estuaries ◽  
2005 ◽  
Vol 28 (6) ◽  
pp. 812-822 ◽  
Author(s):  
Neil K. Ganju ◽  
David H. Schoellhamer ◽  
Brian A. Bergamaschi
Keyword(s):  
Error Analysis ◽  
Suspended Sediment ◽  
Controlling Factors ◽  
Tidal Wetland ◽  
Sediment Fluxes

Suspended sediment fluxes in chalk streams in the Hampshire Avon catchment, U.K.

Hydrobiologia ◽  
2003 ◽  
Vol 494 (1-3) ◽  
pp. 111-117 ◽  
Author(s):  
M. J. T. Heywood ◽  
D. E. Walling
Keyword(s):  
Suspended Sediment ◽  
Sediment Fluxes ◽  
Chalk Streams

Sediment fluxes and sinks for Magela Creek, Northern Territory, Australia

2018 ◽  
Vol 69 (7) ◽  
pp. 1018 ◽  
Author(s):  
Wayne D. Erskine ◽  
M. J. Saynor ◽  
J. M. Boyden ◽  
K. G. Evans
Keyword(s):  
Suspended Sediment ◽  
Sediment Load ◽  
Northern Territory ◽  
Bed Load ◽  
Sediment Yields ◽  
Sediment Fluxes ◽  
Erosion Rates ◽  
Dry Tropics ◽  
The World ◽  
Total Sediment

Sediment fluxes and sinks based on total sediment load for Magela Creek in the Australian wet–dry tropics have been constructed from detailed measurements of stream suspended sediment (turbidity and suspended sand) and bed load for the 10-year period, 2001–2002 to 2010–2011. This work shows that the sediment trap efficiency of the vegetated wetlands on lower Magela is high at ~89.5%. Sediment fluxes are the lowest in the world because of low soil erosion rates and because upstream floodplains and downstream wetlands trap and store sediment. Bedload yields are less than suspended sediment yields, but the amount of silt and clay is much less than the amount of sand (suspended sand and bedload). All sand is stored upstream of the East Alligator River. Downstream connectivity of sediment movement does not occur. Therefore, sediment moves discontinuously from the upper to the lower catchment.

scholarly journals Suspended sediment fluxes in an Indonesian river draining a rainforested basin subject to land cover change

2011 ◽  
Vol 8 (4) ◽  
pp. 7137-7175 ◽  
Author(s):  
F. A. Buschman ◽  
A. J. F. Hoitink ◽  
S. M. de Jong ◽  
P. Hoekstra
Keyword(s):  
Land Cover ◽  
Suspended Sediment ◽  
River Discharge ◽  
Soil Loss ◽  
Suspended Sediment Concentration ◽  
Sediment Concentration ◽  
Sediment Flux ◽  
Sediment Fluxes ◽  
Suspended Sediment Flux ◽  
The Impact

Abstract. Forest clearing for reasons of timber production, open pit mining and the establishment of oil palm plantations generally results in excessively high sediment loads in the tropics. The increasing sediment fluxes pose a threat to coastal marine ecosystems such as coral reefs. This study presents observations of suspended sediment fluxes in the Berau river (Indonesia), which debouches into a coastal ocean that can be considered the preeminent center of coral diversity. The Berau is an example of a small river draining a mountainous, relatively pristine basin that receives abundant rainfall. Flow velocity was measured over a large part of the river width at a station under the influence of tides, using a Horizontal Acoustic Doppler Current Profiler (HADCP). Surrogate measurements of suspended sediment concentration were taken with an Optical Backscatter Sensor (OBS). Tidally averaged suspended sediment concentration increases with river discharge, implying that the tidally averaged suspended sediment flux increases non-linearly with river discharge. Averaged over the 6.5 weeks observations covered by the benchmark survey, the tidally averaged suspended sediment flux was estimated at 2 Mt y−1. Considering the wet conditions during the observation period, this figure may be considered as an upper limit of the yearly averaged flux. This flux is significantly smaller than what could have been expected from the characteristics of the catchment. The consequences of ongoing clearing of rainforest were explored using a plot scale erosion model. When rainforest, which still covered 50–60 % of the basin in 2007, is converted to production land, soil loss is expected to increase with a factor between 10 and 100. If this soil loss is transported seaward as suspended sediment, the increase in suspended sediment flux in the Berau river would impose a severe sediment stress on the global hotspot of coral reef diversity. The impact of land cover changes will largely depend on the degree in which the Berau estuary acts as a sediment trap.

scholarly journals Calculating Highly Fluctuated Suspended Sediment Fluxes from Mountainous Rivers in Taiwan

2005 ◽  
Vol 16 (3) ◽  
pp. 653 ◽  
Author(s):  
Shuh-Ji Kao ◽  
Tsung-Yu Lee ◽  
John D. Milliman
Keyword(s):  
Suspended Sediment ◽  
Sediment Fluxes

SUSPENDED SEDIMENT FLUXES DUE TO TIDES AND WAVES ON MESO-TIDAL FLAT

2009 ◽  
Author(s):  
Fumihiko Yamada ◽  
Nobuhisa Kobayashi ◽  
Yoshihiro Sakanishi ◽  
Yuichiro Shirakawa ◽  
Andres Payo
Keyword(s):  
Suspended Sediment ◽  
Tidal Flat ◽  
Sediment Fluxes

scholarly journals Inferring tidal wetland stability from channel sediment fluxes: Observations and a conceptual model

2013 ◽  
Vol 118 (4) ◽  
pp. 2045-2058 ◽  
Author(s):  
Neil K. Ganju ◽  
Nicholas J. Nidzieko ◽  
Matthew L. Kirwan
Keyword(s):  
Conceptual Model ◽  
Tidal Wetland ◽  
Sediment Fluxes
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