An investigation of sediments grain size in the coastal area of Nour

Nowadays, marine studies and researches are considered inevitable for various purposes such as economic, security, political, military, and environment. An all-encompassing and comprehensive view of the field of marine studies is obvious, and it goes without saying that conducting such studies will result in significant achievements and results. In this research, the amount of marine sediments in the eastern part of the city of Nour, Mazandaran Province, and their different types were sampled and studied through sea expeditions in six turns throughout a year. Sampling stations were selected at a distance of four kilometers and an approximate width of 230m. Study area selection was based on the history of research and the existence of ports in the past. To study the sediments of the seabed zone of the research area, three stations were selected. Sediments were sampled in three stations, with a distance of two kilometers from each other, and twelve sections at a distance of 20m from each other (with the exception of the first section, located at a distance of 10m from the coastline). The amount of sediments and their types were determined in the research area during the intervals of every two months over a year and in the laboratory by screeners and vibrators. The results indicated that the predominant sediment types of the seabed in the area are respectively very fine sand with an average of 90.594%, coarse sand (3.701%), medium sand (2.871%), medium gravel (2.256%), and mud (0.582%).