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Nearshore processes along Tikkavanipalem Beach, Visakhapatnam, India

DRS at CSIR-National Institute of Oceanography

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Title Nearshore processes along Tikkavanipalem Beach, Visakhapatnam, India
 
Creator SanilKumar, V.
AshokKumar, K.
Raju, N.S.N.
 
Subject beaches
nearshore dynamics
longshore sediment transport
longshore currents
environmental factors
wave data
 
Description Directional wave data collected at 12 m water depth, at 1 km distance off Tikkavanipalem, Andhra Pradesh, India from December 1997 to November 1998, was used to estimate the longshore currents and longshore sediment transport rate considering the sea and swell waves separately using the CERC formula. Daily littoral environmental parameters were observed at 3 stations and longshore sediment transport rate was estimated using the Walton's equation. A comparative study was carried out on theoretical and measured longshore currents. The ratio of spectral energy at first and second spectral peaks show that the energy at second peak was more than fifty percent of the energy at first peak in 35% of the data collected. The longshore current speed computed based on Longuet-Higgin's equation was about 25% more than the measured and that based on Galvin's equation was about 22% more than measured. The difference between the gross sediment transport rate estimated based on the two method is around 6%. The sediment transport using Walton's equation shows that average annual gross transport was 0.371 x 10 sup(6) m sup(3) and the average annual net transport (towards northeast) was 0.173 x 10 sup(6) m sup(3)
 
Date 2009-01-07T11:05:27Z
2009-01-07T11:05:27Z
2001
 
Type Journal Article
 
Identifier Journal of Coastal Research, Vol.17; 271-279p.
http://drs.nio.org/drs/handle/2264/1612
 
Language en
 
Rights Copyright [2001]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher Coastal Research Foundation