Multi-temporal photographic dataset of glacier changes in the Rupal Valley, Nanga Parbat, north-western Himalaya

This dataset presents multi-temporal glacier photography from the Rupal Valley, south of Nanga Parbat in the north-western Himalaya. The elevation of viewpoints of re-photographic surveys ranges between 2940 and 5370 m a.s.l. The research is based on the hypothesis that repeat photography of these mountain glaciers allows for a longer monitoring period than remote sensing data as historical metric photographs from the years 1934, 1958, and 1987 are available. All relevant historical photographs showing glacier aspects taken during scientific expeditions have been collected from archives and repeated from the same viewpoints during several surveys between 1992 and 2010. Prints of the selected photographs were taken to the field in order to identify the exact viewpoints. The camera was always mounted on a tripod for careful selection of the view angle and frame. This multi-temporal dataset allows for a detailed visual assessment of glacier fluctuations, changes in glacier snout positions, ice volumes, and debris cover over a period of seven to eight decades. It offers insights for a better understanding of glacier changes in this prominent Himalayan mountain region and can serve as a baseline for further studies. The dataset provides baseline data for a recently published article (Nüsser and Schmidt, 2021) with original archival material and replicated glacier photography. Publication: Nüsser, M., Schmidt, S. 2021. Glacier changes on the Nanga Parbat 1856-2020: A multi-source retrospective analysis. Science of the Total Environment 785, 147321. doi: 10.1016/j.scitotenv.2021.147321本数据集收录了喜马拉雅西北部南迦帕尔巴特峰以南鲁帕尔谷的多时相冰川摄影影像。重复摄影调查的观测点位海拔介于2940米至5370米之间。本研究基于如下假设：相较于遥感数据，对该山地冰川开展重复摄影可获取更长时间序列的监测数据——现有1934年、1958年及1987年的历史测量级摄影影像可供使用。所有在科学考察期间拍摄、记录冰川景观的相关历史影像均从档案机构征集获得，并于1992年至2010年间的多次考察中，从完全一致的观测点位完成了重复拍摄。研究人员将筛选出的历史影像打印件携带至野外，以精准确定观测点位。拍摄过程中始终将相机架设於三脚架上，以精细调整拍摄视角与取景范围。该多时相数据集可支持对70至80年时间跨度内的冰川波动、冰舌位置变化、冰量变化及冰面碎屑覆盖状况开展精细化目视解译与评估。本数据集可为深入理解这一重要喜马拉雅山地的冰川变化提供参考依据，同时可作为后续相关研究的基准数据集。本数据集为2021年发表的一篇相关论文（Nüsser与Schmidt，2021）提供了包含原始档案资料与冰川重复摄影影像在内的基准数据。参考文献：Nüsser, M., Schmidt, S. 2021. 《南迦帕尔巴特峰冰川变化（1856-2020）：多源回溯分析》. 《整体环境科学》（Science of the Total Environment）785卷，文章编号147321. DOI: 10.1016/j.scitotenv.2021.147321