On the factors affecting the settling velocity of fine suspended sediments in a shallow estuary
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| 024 | 7 | 0 | |a 10.1007/s10872-014-0269-x |2 doi |
| 035 | |a (NATIONALLICENCE)springer-10.1007/s10872-014-0269-x | ||
| 245 | 0 | 0 | |a On the factors affecting the settling velocity of fine suspended sediments in a shallow estuary |h [Elektronische Daten] |c [K. Priya, P. Jegathambal, E. James] |
| 520 | 3 | |a Of the factors that affect settling velocity (w s), the concentration of suspended sediments (SSC), C, and turbulence (root-mean-square velocity gradient), G, have been identified as being of major importance. This work reveals the important effect on w s of the vertical salinity gradient, s, (defined as the difference between surface and bottom salinity divided by water depth). w s was obtained by use of the Rouse equation, and ranged between 0.1 and 2.47mm/s. w s was found to have an exponential relationship with SSC for low SSC; an inverse relationship was observed for high SSC, because of hindered settling. The study revealed that w s was inversely related to s and its effect was observed only for high values of s. A new model is proposed in which w s is explained in terms of C, G, and s. Two scenarios were considered on the basis of the stratification parameter ∂S/S 0 (the ratio of the difference between the surface and bottom salinity divided by the mean salinity): ∂S/S 0>0.1 and ∂S/S 0<0.1. The effect of s on w s was negligible when ∂S/S 0<0.1. Regression analysis was performed on observed w s (using the Rouse equation) and calculated w s using three approaches: (1) $$w_\text{s} \propto \,C^{x}$$ w s ∝ C x , (2) $$w_\text{s} \propto \,C^{x} G^{y}$$ w s ∝ C x G y , and (3) the new model $$w_\text{s} \propto \,C^{x} G^{y} s^{ - z} , {\text{for}}$$ w s ∝ C x G y s - z , for ∂S/S 0>0.1, and coefficients of determination of 0.59, 0.65, and 0.86 respectively were obtained. The new model has the advantage that it is dimensionally stable and the empirical coefficient is dimensionless. | |
| 540 | |a The Oceanographic Society of Japan and Springer Japan, 2015 | ||
| 690 | 7 | |a Settling velocity |2 nationallicence | |
| 690 | 7 | |a SS concentration |2 nationallicence | |
| 690 | 7 | |a Turbulence |2 nationallicence | |
| 690 | 7 | |a Salinity gradient |2 nationallicence | |
| 690 | 7 | |a Stratification parameter |2 nationallicence | |
| 690 | 7 | |a Muthupet estuary, India |2 nationallicence | |
| 700 | 1 | |a Priya |D K. |u School of Civil Engineering, Karunya University, Coimbatore, India |4 aut | |
| 700 | 1 | |a Jegathambal |D P. |u Water Institute, Karunya University, Coimbatore, India |4 aut | |
| 700 | 1 | |a James |D E. |u Water Institute, Karunya University, Coimbatore, India |4 aut | |
| 773 | 0 | |t Journal of Oceanography |d Springer Japan |g 71/2(2015-04-01), 163-175 |x 0916-8370 |q 71:2<163 |1 2015 |2 71 |o 10872 | |
| 856 | 4 | 0 | |u https://doi.org/10.1007/s10872-014-0269-x |q text/html |z Onlinezugriff via DOI |
| 898 | |a BK010053 |b XK010053 |c XK010000 | ||
| 900 | 7 | |a Metadata rights reserved |b Springer special CC-BY-NC licence |2 nationallicence | |
| 908 | |D 1 |a research-article |2 jats | ||
| 949 | |B NATIONALLICENCE |F NATIONALLICENCE |b NL-springer | ||
| 950 | |B NATIONALLICENCE |P 856 |E 40 |u https://doi.org/10.1007/s10872-014-0269-x |q text/html |z Onlinezugriff via DOI | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Priya |D K. |u School of Civil Engineering, Karunya University, Coimbatore, India |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Jegathambal |D P. |u Water Institute, Karunya University, Coimbatore, India |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a James |D E. |u Water Institute, Karunya University, Coimbatore, India |4 aut | ||
| 950 | |B NATIONALLICENCE |P 773 |E 0- |t Journal of Oceanography |d Springer Japan |g 71/2(2015-04-01), 163-175 |x 0916-8370 |q 71:2<163 |1 2015 |2 71 |o 10872 | ||