OCTOPUS Database v.2.2: The CRN Denudation Global collection [2024]

Database of published cosmogenic Be-10 and Al-26 concentrations from modern river sediment and basin-averaged denudation rates inferred from these data. Ancillary spatial data includes: sample site location (point), basin outline (polygon), digital elevation model (raster), D8 flow direction and flow accumulation grids (raster), topographic gradient (raster), atmospheric pressure (raster), and cosmogenic nuclide production scaling factor and topographic shielding grids (raster). The vector spatial data uses the WGS84/Pseudo-Mercator (EPSG: 3857) projected coordinate reference system. The raster data uses the WGS86/UTM projected coordinate reference system, UTM zones depending on the extent and location of each data package. Sample metadata is comprehensive and includes all necessary information and input files for the recalculation of denudation rates using the CAIRN model (https://github.com/LSDtopotools/LSDTopoTools_CRNBasinwide). All denudation rates were recalculated and harmonised using CAIRN. The extent of the data is global, excluding Australia.本数据集收录已发表的现代河流沉积物中宇宙成因铍-10（Be-10）与铝-26（Al-26）浓度数据，以及基于该类数据推导得到的流域平均剥蚀速率。配套空间数据涵盖：采样点位置（点要素）、流域轮廓（面要素）、数字高程模型（栅格）、D8流向与流量累积栅格、地形坡度栅格、大气压力栅格，以及宇宙成因核素生产缩放因子与地形屏蔽栅格。矢量空间数据采用WGS84/伪墨卡托（EPSG: 3857）投影坐标系。栅格数据采用WGS86/通用横轴墨卡托（UTM）投影坐标系，UTM分带依据各数据包的覆盖范围与区位确定。采样元数据内容完备，包含利用CAIRN模型重新计算剥蚀速率所需的全部必要信息与输入文件（https://github.com/LSDtopotools/LSDTopoTools_CRNBasinwide）。所有剥蚀速率均通过CAIRN模型完成重新计算与统一校准。本数据集覆盖全球范围，不含澳大利亚地区。