State Key Laboratory of Ocean Engineering;
Shanghai Jiao Tong University;
Shanghai 200240;
China;
Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration(CISSE);
Shanghai 200240;
China;
School of Naval Architecture;
Ocean and Civil Engineering;
Shanghai Jiao Tong University;
Shanghai 200240;
China;
wave; trough; depth; second; order; nonlinear; wave; model; asymptotic; method; measured; data;