Results 241 to 250 of about 1,621,802 (299)

Dams trigger long-term river-floodplain decoupling in dynamic Andean foreland rivers. [PDF]

Sci Adv
Brückner MZM, Nicholas AP, Aalto R, Ashworth PJ, Best J, Dunne T, de Almeida RP.   +6 more
europepmc   +1 more source

Baseline assessment of sedimentary heavy metals and ecological risks in the high-siltation Gorai River, Bangladesh. [PDF]

Sci Rep
Santa SS, Hossain MK, Moniruzzaman M, Ghosh A, Hossain R, Hossain MB, Khan MHR, Arai T.   +7 more
europepmc   +1 more source

Mechanism and Characteristics of Phosphorus Release from Sediments in Drawdown Zone Under Inundation/Drying Cycles. [PDF]

Toxics
Yang H, Zhang F, Liu J, Cui D.
europepmc   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Sediment load prediction by genetic algorithms

Advances in Engineering Software, 2009
Accurate sediment load prediction is very important in planning, designing, operating and maintenance of water resources structures. Various models have been developed so far to identify the relation between discharge and sediment load. Most of the models based on regression method (RM) have some restrictive assumptions.
Abdüsselam Altunkaynak
exaly   +3 more sources

BED‐LOAD SEDIMENTS

Sedimentology, 1972
ABSTRACTApplication of sieve and size‐shape analyses (Moss, 1962) to natural and artificial bed‐load deposits of shallow, unidirectional currents revealed that a textural sequence parallels one of primary structures. With increasing grain size and/or transporting power, sedimentary characteristics followed the stepwise pattern: fine ripple bed stage ...
openaire   +1 more source

Sediment loads in the Amazon River

Nature, 1979
ESTIMATES published in the past 20 years of the sediment load delivered to the sea by the Amazon River range from 4 to 10 × 108 tonnes yr−1 Estimates published around 1960, when few data were available on either the sediment concentration or the river discharge, were in the range 9–10 × 108 tonnes yr−1 (refs 1, 2). Estimates published in 1967 and 1968,
ROBERT H. MEADE, CARL F. NORDIN, WILLIAM F. CURTIS, FLAVIO M. COSTA RODRIGUES, CARLOS M. DO VALE, JOHN M. EDMOND   +5 more
openaire   +1 more source

Washload and Fine Sediment Load

Journal of Hydraulic Engineering, 1986
Washload and fine sediment load should not be used synonymously. In streams with large concentrations of fines, the sediment size D\d1\d0 may be much smaller than 0.0625 mm. The fluid becomes very viscous at low concentrations of clays and the reduced settling velocity inhibits the exchange of sediment particles between the bed and the suspension.
Hyoseop S. Woo, Pierre Y. Julien, Everett V. Richardson   +2 more
openaire   +1 more source

Phosphorus accumulation in sediments and internal loading

Hydrobiological Bulletin, 1986
Two simple conceptual approaches for the description of phosphorus accumulation and release from sediments are presented. The first model is a mass-balance over the well-mixed top-layer, and demonstrates the enhanced initial effect of sediment dilution on the long-term accumulation, which is magnified in the resulting internal loading, as a consequence
openaire   +2 more sources

Bed‐Load and Suspended‐Load Transport of Nonuniform Sediments

Journal of Hydraulic Engineering, 1991
Methods are available for the computation of the bed-load and suspended-load transport rates of uniform sediments. However, limited studies exist for nonuniform sediments. These studies, in general, lack simplicity, and often make use of various correction factors to be read from a series of tables and graphs.
Prabhata K. Swamee, Chandra Shekhar P. Ojha   +1 more
openaire   +1 more source

Impacts of increased sediment loads on the ecology of lakes

Biological Reviews, 2009
ABSTRACTIncreased sediment loading comprises one of the most important and pervasive anthropogenic impacts on aquatic ecosystems globally. In spite of this, little is known of the overall effects of increased sediment loads on lakes. By modifying both bottom‐up and top‐down ecological processes and restructuring energy flow pathways, increased sediment
Ian, Donohue, Jorge, Garcia Molinos
openaire   +2 more sources