抄録
This study investigates function of sand-filled-geotextile bag (sand pack), installed in front of sand dune, as decrement against beach erosion through laboratory experiments. And we investigate function of sand pack as decrement against beach erosion in three case of distance between shoreline and structure. We investigated a migration length of sand dune apex and area of cross section of sand dune. Sand pack was found to be effective to reduce beach erosion as compared with beach fill because sand pack worked as a retaining obstraction. And Experimental analysis revealed that sand pack is effective in decreasing amount of erosion as compared with artificial nourishment and breakwater.
