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Longshore sediment transport rate-measurement and estimation, central west coast of India

DRS at CSIR-National Institute of Oceanography

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Title Longshore sediment transport rate-measurement and estimation, central west coast of India
 
Creator SanilKumar, V.
Anand, N.M.
Chandramohan, P.
Naik, G.N.
 
Subject longshore sediment transport
sediment traps
longshore currents
breakwaters
surf zone
breaking waves
wave characteristics
 
Description Measurements of the longshore sediment transport rate (LSTR) along the surf zone at a 4-km-long beach on the central west coast of India were made over a 4-month period. During the study, both the lateral and vertical distributions of the sediment transport rate were measured with traps deployed on a line spanning the surf zone. Sediment transport in the swash zone was not considered in the present study. The longshore current was measured at each trap location. The breaking wave parameters were calculated from a directional wave buoy at 16-m water depth. The measured values were compared with those calculated from three selected empirical formulas. The standard coefficient values in the empirical formulas were used without calibration to the data sets. The measured average gross transport was 726 m u3/day and that calculated were 1108, 1017, and 781 m u3/day based on CERC, Walton and Bruno, and Van Rijn formula. During the data collection 69% of the time, the transport was direct towards north, and in the remaining period, it was direct towards south. The correlation coefficient between the longshore sediment transport rates measured and those calculated by CERC, Walton and Bruno, and Van Rijn formula were 0.38, 0.71, and 0.74, respectively. The average RMS error between the measured and the calculated longshore sediment transport rate based on CERC, Walton and Bruno, and Van Rijn formula were 0.91, 0.57, and 0.47
 
Date 2008-07-18T05:45:17Z
2008-07-18T05:45:17Z
2003
 
Type Journal Article
 
Identifier Coastal Engineering, Vol.48; 95-109p.
http://drs.nio.org/drs/handle/2264/1251
 
Language en
 
Rights Copyright [2003]. It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice that the rights are violated then the item would be withdrawn.
 
Publisher Elsevier