1. Assistant Professor, Dept. of Civil Engineering, Univ. of Coimbra, Portugal, IMAR (Institute of Marine Research-Marine and Environmental Research Centre), R. Luís Reis Santos, Polo 2, 3030–788 Coimbra, Portugal (corresponding author).
2. Assistant Professor, Dept. of Civil Engineering, Univ. of Coimbra, Portugal, IMAR (Institute of Marine Research-Marine and Environmental Research Centre), R. Luís Reis Santos, Polo 2, 3030–788 Coimbra, Portugal.