Summary of data used to build the article "Multi-scale characterization of joint surface roughness".

The following dataset contains all surface measurements data related to the article "Multi-scale characterization of joint surface roughness". The IGSN reference is IEBNB0001. Sample description: the files contain surface measurements on a fresh joint surface performed in the active Klieve quarry, Southern Münsterland, Western Germany (51°34’30’’N, 8°18’00’’E). The joint was developed at less than 1 km depth in Turonian glauconitic. Sampling for microscopic characterization was done on a loose part from the main block. Surface elevation measurements of the plumose structure were performed with a LiDAR terrestrial scanner FARO^®Focus3D X330, then processed using the software SCENE^® to obtain a referenced 3D point cloud of the joint surface. The 3D point cloud is provided in xyz format in the file “<i>LiDAR data coordinates.xyz</i>” and corresponds to the exported data from the SCENE^®software. A jpeg file “<i>together_V2.jpeg</i>” shows a photography of the joint surface together with the LiDAR scan results. Furthermore, the authors provide a file “<i>raw_data_LiDAR_measurement.mat</i>” with data scaled as a 2D surface. The file “<i>im_square1.mat</i>” is the selected area on the joint surface used in the article. The three files used for microscopic characterization “<i>im100X.mat”, “im200X.mat” </i>and “<i>im500X.mat</i>” are also provided.Summary and supplementary details: _The jpegfile "<i>together_V2.jpeg</i>" allows a clear identification of the surface location selected for measurement and a photography of the joint surface. Coating of iron-hydroxides and of quartz only on the central part can be observed on the joint surface. However, they are very thin and mimic the plumose structure. Hackles and ridges, revealed by surface measurements, were also identified during in-situ observations._ <i>“LiDAR data coordinates.xyz</i>” shows LiDAR point cloud after exportation in x,y,z format. Note: axes are in the following order. The first column corresponds to the x-direction and the third column corresponds to y-direction. The second column corresponds to the z-direction and elevation is inversed (the lowest values are the maximum values). Units are in meters._ The file "<i>raw_data_LiDAR_measurement.mat</i>" corresponds to the merging of four scans by use of LiDAR technology. Units are in meters, these raw data were not filtered. Users are free to follow the method proposed in the article "Multi-scale characterization of joint surface roughness" to process data. Element size is 0.49 mm._ The file "<i>im_square1.mat</i>" contains the selected surface from LiDAR scan measurement after filtering. Element size is 0.49 mm._ The file "<i>im100X.mat</i>" contains the surface measurement by use of Keyence microscope at 100X magnification. Units are in micrometers. Element size is 8.46 µm. _ A file " <i>im200X.mat</i> " contains the surface measurement by use of Keyence microscope at 200X magnification. Units are in micrometers. Element size is 5.15 µm. _ A file " <i>im500X.mat</i> " contains the surface measurement by use of Keyence microscope at 500X magnification. Units are in micrometers. Element size is 2.1 µm.

本数据集包含与论文《节理表面粗糙度多尺度表征》（Multi-scale characterization of joint surface roughness）相关的全部表面测量数据。国际地质样本编号（IGSN, International Geosample Number）为IEBNB0001。
样本说明：本数据集涵盖的文件为德国西部明斯特兰南部活跃的克利夫（Klieve）采石场（51°34’30’’N，8°18’00’’E）中新鲜节理表面的表面测量数据。该节理形成于地下1千米以浅的土仑阶（Turonian）海绿石岩层中。用于显微表征的采样取自主岩块的松散碎屑。
羽状构造（plumose structure）的表面高程测量采用FARO® Focus3D X330地面激光雷达（LiDAR, Light Detection and Ranging）扫描仪完成，后续通过SCENE®软件进行处理，以获取节理表面的配准三维点云。
三维点云以xyz格式存储于文件“LiDAR data coordinates.xyz”中，为SCENE®软件导出的原始数据。文件“together_V2.jpeg”展示了节理表面照片与LiDAR扫描结果的合成图。此外，作者还提供了二维表面形式的缩放数据文件“raw_data_LiDAR_measurement.mat”。文件“im_square1.mat”为该论文中使用的节理表面选定区域数据。同时提供了三份用于显微表征的文件：“im100X.mat”、“im200X.mat”及“im500X.mat”。
总结与补充细节：
文件“together_V2.jpeg”可清晰识别本次测量选定的表面位置，并展示节理表面的实拍照片。节理表面仅在中部区域分布有氢氧化铁与石英涂层，该涂层极薄，且与羽状构造形态高度吻合。通过表面测量揭示的羽状纹（hackles）与脊状构造，在原位观测中也得到了验证。
文件“LiDAR data coordinates.xyz”展示了导出为x、y、z格式的LiDAR点云。注意：坐标轴顺序如下：第一列对应x方向，第三列对应y方向，第二列对应z方向，且高程反转（数值越低代表高程越高），单位为米。
文件“raw_data_LiDAR_measurement.mat”为四次LiDAR扫描的合并数据，单位为米，未经过滤波处理。使用者可参考论文《节理表面粗糙度多尺度表征》中提出的方法进行数据处理，数据单元尺寸为0.49 mm。
文件“im_square1.mat”包含经过滤波处理的LiDAR扫描选定表面数据，单元尺寸为0.49 mm。
文件“im100X.mat”为基恩士（Keyence）显微镜在100倍放大倍率下的表面测量数据，单位为微米（µm），单元尺寸为8.46 µm。
文件“im200X.mat”为基恩士显微镜在200倍放大倍率下的表面测量数据，单位为微米，单元尺寸为5.15 µm。
文件“im500X.mat”为基恩士显微镜在500倍放大倍率下的表面测量数据，单位为微米，单元尺寸为2.1 µm。