Comparison of Water Level Changes in the Mekong River Using Gnss Reflectometry, Satellite Altimetry and in-Situ Tide/River Gauges. - Phuong Lan Vu; Frédéric Frappart; José Darrozes; Minh-Cuong Ha; Thi-Bao-Hoa Dinh; Guillaume Ramillien (IGARSS, 2018)