The dataset contains the output data of the numerical model and the source code for processing the data. 1 Model validation The simulation time period covers 1996 to 2010 CE for H1, 1986 to 2009 CE for H2, and 1986 to 2008 CE for H3. 1.1 The grain size distribution of the H1-H3 profile .grain 1.2 The seafloor topography of the H1-H3 profile .bin 2 Sensitivity numerical experiments 2.1 The grain size distribution of the YD01-YD03 cores .grain We selected three cores (YD01, YD02, and YD03) at the H2 profile, simulated for the period of 1986-2006. 2.2 The seafloor topography of the H2 profile .bin The model runs over timespans of 10 years (1986 to 1996), 20 years (1986 to 2006), and 30 years (1986 to 2015). 2.3 The measured seafloor topography of the H2 profile .xlsx 2.4 Original experimental data related to soil core samples .xlsx 3 The plot_ grain.m and plot_ elevation.m file is used to process and analyze grain size distribution and topography, respectively