“…During the calm weather, the thickness of the FM was observed with a tidally averaged mean value of <0.3 m around the Changjiang Estuary and its adjacent coastal regions (Ge et al, 2018; X. Yang et al, 2015). Under some deposition events, much thicker FMs could occur, evidenced by previously recorded studies of the Waipaoa River shelf, the northern California shelf, the Eel River shelf, the Louisiana shelf, and the Elwha River (Eidam et al, 2019; Hale et al, 2014; Ogston et al, 2000; Traykovski et al, 2000, 2015). However, it is a considerable challenge to monitor and simulate the FM features under extreme weather conditions, particularly during a storm event (McAnally et al, 2007; Wan et al, 2014).…”