Dataset of micro-roughness, Schmidt hammer and reflectance spectra obtained at Hallstaetter Glacier foreland

The files contain data of micro-roughness (Ra and Rz), raw data of Schmidt hammer rebound-values, and reflectance spectra obtained at Hallstaetter Glacier foreland in July 2022. The data was use in a publication: Dąbski M, Badura I, Kycko M, Grabarczyk A, Matlakowska R, Otto J-C. The Development of Limestone Weathering Rind in a Proglacial Environment of the Hallstätter Glacier. Minerals. 2023; 13(4):530. https://doi.org/10.3390/min13040530. Funding provided by National Science Centre, Poland (Preludium Bis-2 2020/39/O/ST10/01068). Micro-roughness, rock strength (Schmidt hammer rebound values), and spectral reflectance were obtained in-situ on glacially abraded rock surfaces along a transect from the glacial snout to the outermost moraines from the Little Ice Age, covering circa 172 years of subaerial weathering in the proglacial alpine environment. UAV surveys of the studied area were performed to obtain Digital Elevation Models (DEMs) and allow for detailed comparative studies in the future. Test site 1 was very close to the glacier (undergoes weathering for 1–2 years), site 2 was in the zone c. 10 years old, site 3 was in the zone c. 50–51 years old, site 4 was in the zone c. 105–106 years old, and the last one (site 5) was on the LIA moraines, where the duration of weathering is c. 167–172 years. The sites were located on bedrock or boulders embedded in the moraines with distinct traces of glacial abrasion, allowing us to infer that older weathering rind (developed before glacial accumulation) has been eroded. The sites were selected based on their age, homogenous petrography, accessibility, and suitability for micro-roughness measurements. Within each test site, we selected ten specific rock surfaces (c. 100 cm2 each), with clear signs of glacial abrasion, for the measurements of micro-roughness, Schmidt hammer rebound (rock strength), and spectral reflectance.本数据集文件包含2022年7月在哈尔施塔特冰川（Hallstaetter Glacier）前缘获取的微粗糙度（参数为Ra和Rz）数据、施密特回弹仪（Schmidt hammer）回弹值原始数据，以及反射光谱数据。该数据已用于以下发表论文：Dąbski M, Badura I, Kycko M, Grabarczyk A, Matlakowska R, Otto J-C. 《哈尔施塔特冰川冰缘环境中石灰岩风化壳的发育》. 《Minerals》, 2023, 13(4):530. https://doi.org/10.3390/min13040530。本研究受波兰国家科学中心（National Science Centre, Poland）资助（项目编号：Preludium Bis-2 2020/39/O/ST10/01068）。本次研究针对冰川磨蚀岩面开展了微粗糙度、岩石强度（施密特回弹仪回弹值）及光谱反射率的原位测量，采样断面从冰舌前端延伸至小冰期（Little Ice Age）形成的最外侧冰碛物，覆盖了阿尔卑斯冰缘环境中约172年的大气风化时长。研究区域已完成无人机（UAV）航拍，以获取数字高程模型（DEMs），为未来开展详细对比研究提供支撑。采样点1紧邻冰川，风化时长约1~2年；采样点2位于风化时长约10年的区域；采样点3位于风化时长约50~51年的区域；采样点4位于风化时长约105~106年的区域；最后一个采样点（采样点5）位于小冰期冰碛物上，其风化时长约167~172年。所有采样点均位于冰碛物中的基岩或巨砾上，且带有清晰的冰川磨蚀痕迹，由此可推断，冰川堆积前形成的早期风化壳已被侵蚀移除。采样点的选取依据包括风化时长、均一的岩石学特征、野外可及性以及适配微粗糙度测量的条件。在每个采样点内，我们选取了10处带有清晰冰川磨蚀痕迹的岩面（单块面积约100 cm²），用于开展微粗糙度、施密特回弹仪回弹（岩石强度）及光谱反射率测量。