Results 231 to 240 of about 1,505,249 (270)

The role of sediment rating curve development methodology on river load modeling

Environmental Monitoring and Assessment, 2019
The study aims to evaluate the performance of four sediment rating curve development methods, namely (i) simple rating curve, (ii) different ratings for the dry and wet season of the year, (iii) different ratings for the rising and falling limb of the runoff hydrograph, and (iv) broken line interpolation that uses different exponents for two discharge ...
Nikolaos Efthimiou
exaly   +3 more sources

An evaluation of sediment rating curves for estimating suspended sediment concentrations for subsequent flux calculations†

Hydrological Processes, 2003
AbstractIn the absence of actual suspended sediment concentration (SSC) measurements, hydrologists have used sediment rating (sediment transport) curves to estimate (predict) SSCs for subsequent flux calculations. Various evaluations of the sediment rating‐curve method were made using data from long‐term, daily sediment‐measuring sites within large ...
Arthur J. Horowitz
exaly   +2 more sources

Analysis of flow-sediment rating curve hysteresis based on flow and sediment travel time estimations

International Journal of Sediment Research, 2018
Abstract A flow-sediment rating curve is used to describe the relation between flow discharge and suspended-sediment concentration for a specific location. Five types of flow-sediment rating curves - single-valued line, clockwise loop, counterclockwise loop, single-valued line plus loop, and figure eight - were found to rely on the flow and available
Kwan Tun Lee
exaly   +2 more sources

Estimating suspended sediment loads in the Pearl River Delta region using sediment rating curves

Continental Shelf Research, 2012
Abstract In this study, sediment rating curves are employed to study the variations in relationships between water discharge and suspended sediment concentration based on the recent 50 years of monthly data set in the three major rivers of the Pearl River Delta. Results show that sediment rating parameters vary with time.
Xiaoyan Wei, Jinhai Zheng
exaly   +2 more sources

Performance comparison between genetic programming and sediment rating curve for suspended sediment prediction

African Journal of Science, Technology, Innovation and Development, 2019
The accurate prediction of suspended sediment flowing into reservoirs is very important during their design and operation stage.
Adesoji Tunbosun Jaiyeola, Josiah Adeyemo   +1 more
exaly   +2 more sources

Fitting and interpretation of sediment rating curves

Journal of Hydrology, 2000
Abstract A large part of the sediment in lowland rivers is transported as wash load. As wash load is a non-capacity load it often is modelled using empirical relations, such as the rating curve technique. Sediment rating curves in the form of a power function are derived for several locations along the river Rhine and its main tributaries, using ...
openaire   +1 more source

Assessing the accuracy of suspended sediment rating curves for a small basin

Water Resources Research, 1977
Sediment rating curves are often used to estimate suspended sediment loads where the sampling program is insufficient to define the continuous record of sediment concentration. Use of this technique will involve errors in the values of sediment load produced, and comparison with measured daily values has been employed by several workers to assess the ...
So Kazama, Kenji Suzuki, Masaki Sawamoto
openaire   +1 more source

Single-station estimates of suspended sediment loads using sediment rating curves

Canadian Journal of Civil Engineering, 1993
Sediment rating curves in conjunction with daily flow data have often been used to estimate the total mass of sediment flowing past a given river cross section over relatively long periods of time. Techniques are presented that seek to make the best use of limited noncontinuous suspended sediment concentration data to generate nine partial years of ...
David Hansen, Dale I. Bray
openaire   +1 more source

Florida Submergence Curve Revised: Its Relation to Coastal Sedimentation Rates

Science, 1969
New data substantiate as well as modify the south Florida submergence curve, which indicates that eustatic sea level has risen continuously, although at a generally decreasing rate, during the last 6500 to 7000 sidereal years (5500 standard radiocarbon years) to reach its present position.
D W, Scholl, F C, Craighead, M, Stuiver
openaire   +2 more sources

Reliability of sediment rating curves for a deciduous forest watershed in Iran

Hydrological Sciences Journal, 2010
Abstract The suspended sediment load in a river is an indicator of its health. Yet, the direct measurement of suspended sediment load is difficult. Most assessments of suspended sediment load are therefore estimated from relationships developed between suspended sediment concentration and discharge, as sediment rating curves.
Seyed Hamidreza Sadeghi, Pari Saeidi
openaire   +1 more source