The Red River Delta (RRD) located in the Northern Vietnam is under consttmt threat from wave and high water level in the sea (especially during typhoons and severe northeast monsoons). Most of the Red river sediment is discharged into the sea through some different branches. In general, accumulation occurs in the vicinity of the branches, at a rate depending on the local sediment discharge of the branch. The most intensive accumulation is recorded at Day mouth and Balat mouth with the rate of about 10 meter per year. However, simultaneously wit this accumulation, high rates of erosion has occurs at Hai Hau district - Nam Dinh province, threaten the low-lying land behind the sea dike system with the most population density of the RRD. In this context, the execution of a field survey on near shore wave, current and sediment transport in the Hai Hau beach during monsoon season is the main objective of the Vietnam-Russian joint project "Study and modeling of the dynamical processes of the Vietnam and Russian southern seas coastal zones for the coastal erosion forecasting". In the report, results of the field survey from 4th to 18th January 2011 at Thinh Long town, Hai Hau district, Nam Dinh province will be presented. During this experiment new system of turbidity and wave measurements equipment from Shirshov Institute of Oceanography - Russian Academy of Sciences and Russian State Institute of Oceanology have been used. The main results of the survey is supporting to the detail study of the near shore dynamic and sediment transport processes and their resulting to the coastline eroding.
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