抄録
The fore-dunes (artificial sand dunes) of Japan's coastal sand dunes have played a significant role in coastal afforestation of inland areas. Recently however, in some areas, blown sand is moving further inland from the fore-dunes, as a function of the fore-dunes to control blown sand is degrading. This is the cause of major concerns. This paper is based on the results of measurements carried out over a period of 2 years on 12 lines to measure changes of vertical and horizontal surface shapes from the fore-dunes to the shoreline in a part of Yamagata Prefecture in northern Japan. We have examined the relationship between these results and the distance from a river mouth, as well as the relationships with vegetation and the parking areas created near the shoreline. The results indicate that the “two-hump camel” shaped depression in the Shonai sand dune, consisting of the fore-dune and the groins on the shoreline side, has an important function to store blown sand. In addition, from the view point that securing this “two-hump camel” shaped terrain is important to control blown sand in the future, we have suggested that it is critical to carry out “measures to trap blown sand ” and implement “sedimentation removal to recover the depression”.
https://ror.org/00xy44n04 
