Record Details

Beach dynamics of an open coast on the west coast of India

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title Beach dynamics of an open coast on the west coast of India
 
Creator Jayakumar, S.
Raju, N.S.N.
Gowthaman, R.
 
Subject Beach profiles
Beach morphology
Longshore sediment transport
Sedimentary environments
Breaking waves
 
Description In order to study the daily beach dynamics at an open beach in Goa, field investigations were carried out on the beach profiles, breaking wave parameters and long-shore currents for one month each during pre-monsoon and post-monsoon periods. Three transects on the Calangute Beach, Goa, India, spaced about 250 m apart were selected. Pre-monsoon breaking wave heights were observed to be between 0.4 and 1.3 m and the wave period between 5 and 11 s, whereas, the post-monsoon breaking wave heights were between 0.35 and 1.4 m with the periods ranging between 8 and 15 s. Pre-monsoon long-shore currents were stronger (max. 1 m/s) and varying in direction compared to post-monsoon (max. 0.66m/s) wherein the direction was predominantly north. Post-monsoon foreshore slopes were found to be mild and the berms wider compared to the pre-monsoon beaches. Inter-tidal beach sediments in the pre-monsoon period were coarse compared to post-monsoon sediments. Average estimated long-shore sediment transport rate in the study region indicates that the gross long-shore sediment transport was high during pre-monsoon compared to the post-monsoon. The net transport was southwards and about 0.013x10 sup(6) m sup(3)/year during the pre-monsoon and it was northerly and about 0.007x10 sup(6) m sup(3)/year during the post-monsoon. Whereas, the average gross transport rate was 0.02x106 m sup(3)/year during the pre-monsoon it was 0.014x10 sup(6) m sup(3)/year during the post-monsoon.
 
Date 2008-07-02T06:59:32Z
2008-07-02T06:59:32Z
2004
 
Type Conference Article
 
Identifier Third Indian National Conference on Harbour and Ocean Engineering (INCHOE - 2004). Proceedings, eds. Mandal, S.; SanilKumar, V.; JayaKumar, S.Vol.1; 9-16p.
http://drs.nio.org/drs/handle/2264/1162
 
Language en
 
Rights Copyright [2004]. 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 If it is brought to our notice that the rights are violated then the item would be withdrawn.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 National Institute of Oceanography, India