抄録
Beach changes around Oyazawabana sand spit in Lake Hinuma located in the eastern part of Ibaraki Prefecture were investigated through the field observation as well as the aerial photographying of the sand spit. This sand spit composed of coarse materials protrudes into the lake, and littoral drift from east to west dominates due to wind waves generated by east winds prevailing in this area.This study summarizes the specific topographic features caused by this littoral drift around the spit.It is found that the results well correspond to the beach changes generally observed on the seashore.