A sand spit under the 2018 flood event: case study at Arakawa River mouth in Niigata, Japan

The datasets are the results of a numerical simulation study of a sand spit at the Arakawa river mouth in Niigata, Japan under the 2018 flood event. The datasets include observed data of tides, river discharge, and waves, and numerical results of SWAN and XBeach.本数据集为日本新潟县荒川河口沙嘴在2018年洪水事件下的数值模拟研究成果。数据集涵盖潮汐、河流径流量与波浪的实测数据，以及SWAN与XBeach的数值模拟结果。