1. Professor, School of Civil Engineering, SASTRA Univ., Thanjavur 613 402, India (corresponding author). E-mail: dhinaji@gmail.com
2. Professor, Dept. of Ocean Engineering, Indian Institute of Technology Madras, Chennai 600 036, India. E-mail: vsundar@iitm.ac.in
3. Professor, Dept. of Ocean Engineering, Indian Institute of Technology Madras, Chennai 600 036, India. E-mail: rsun@iitm.ac.in
4. Professor, Dept. of Civil Engineering, Univ. of Leipzig, Leipzig 04109, Germany. E-mail: grawsun@hotmail.com