Spatial variability of rainfall driven erosion at the catchment scale: the June 23rd 2010 rainfall event on the Galabre catchment

This dataset is related to the Galabre basin, a 20 km² headwater catchment located in the French Alps that is part of the Draix-Bléone Observatory. Liquid and solid discharges are continuously monitored at the catchment outlet (Legout et al. 2021). Soil erosion was modelled for a rainfall event recorded on June 23rd 2010, prescribing the effective rainfall intensity in two different ways: 1) as spatially distributed rainfall fields defined from raster files with spatial and temporal resolutions of 1 km and 15 minutes respectively, and 2) as spatially uniform rainfall fields defined as the spatial average of the rainfall fields over the entire catchment, with a time resolution of 15 minutes. Both rainfall products are equivalent in terms of the spatial average of rainfall intensity at each time step. The only difference between both simulations was the spatial variability of rainfall. The dataset contains two Iber+ models with either options of modelling rainfall, including the rainfall data as .asc rasters, as well as a spreadsheets with the output results of the simulation. The Iber+ model should be run with the executables provided by CEA & GARCIA-FEAL 2023, "Iber+ executables (V3.2b)", https://doi.org/10.57745/UFEK4L.

本数据集与加拉布雷盆地（Galabre basin）相关，该盆地面积20平方千米，为坐落于法国阿尔卑斯山区的源头集水区，隶属于德拉-布洛讷观测站（Draix-Bléone Observatory）。集水区出口处已对液态与固态径流开展连续监测（Legout等，2021）。针对2010年6月23日记录的一场降雨事件开展土壤侵蚀模拟，并通过两种不同方式给定有效降雨强度：其一为基于栅格文件生成的空间分布式降雨场，其空间分辨率与时间分辨率分别为1千米与15分钟；其二为以整个集水区降雨场的空间平均值定义的空间均一化降雨场，时间分辨率为15分钟。两种降雨产品在各时间步长的降雨强度空间平均值上保持一致，二者模拟的唯一差异在于降雨的空间变异性。本数据集包含两套基于Iber+模型的模拟结果，分别采用上述两种降雨模拟方案，其中降雨数据以.asc格式栅格文件存储，同时附带包含模拟输出结果的电子表格。Iber+模型需使用CEA与GARCIA-FEAL 2023发布的可执行程序"Iber+可执行程序（V3.2b）"运行，相关链接：https://doi.org/10.57745/UFEK4L。