Hydraulics Department;
Changjiang River Scientific Research Institute;
Wuhan 430010;
China;
State Key Laboratory of Coastal and Offshore Engineering;
Dalian University of Technology;
Dalian 116024;
China;
Nanjing Hydraulic Research Institute;
Nanjing 210029;
China;
transport and mixing; Lagrangian coherent structures; synoptic Lagrangian maps; Xiangshan Bay;