Summary of Abstract Submission

Abstract Submission No. IO50-03-0011PresentationPoster

PREDICTION OF BEACH MORPHOLOGICAL CHANGES FROM NEARSHORE WAVE CLIMATE USING CANONICAL CORRELATION ANALYSIS

Yadhunath E.M*1, Jaya Kumar Seelam1

1 CSIR-National Institute of Oceanography, India

ABSTRACT :

Canonical Correlation Analysis (CCA) is a correlation method to understand the relationship between two sets of observed values (Barnett and Preisendorfer, 1987, Graham et al., 1987).To investigate the relation between wave pattern and profile response first step of CCA is to correlate the profile response with offshore waves. This gives an idea about statistical distribution of the wave forcing with the local beach profile response. If there is a strong correlation observed between the two variables (waves and profiles) , then CCA can be developed as an predicting technique (Larson et al., 2000). Miramar beach is a well-developed beach with more than 100m wide backshore and vegetation dunes, which undergoes erosion during south west monsoon period and regains its shape in post-monsoon (Jayakumar S. et al. 2002; Mascarenhas, 2009; Ramesh and Jaya Kumar Seelam, 2007). Beach profile data were collected from Miramar beach over a period of one month on daily basis and for one year on monthly basis. In this study, to understand the beach response to the nearshore wave as well as to predict the beach profile variations, CCA is applied on beach profiles collected from Miramar beach, with inputs of near shore wave data obtained from MIKE21 spectral wind wave model using hind cast winds.