Displacements on selected rock glaciers in the United States

Lateral displacements between two years on selected rock glaciers in the United States (Rocky Mountains and westwards). Displacements were measured using image correlation on repeat orthoimages from the United States Geological Survey archive. Correlation software used: CIAS (http://mn.uio.no/icemass). The data are the raw data behind the following publication. This publication contains more details about the measurements. Kääb, A., Røste, J. Rock glaciers across the United States predominantly accelerate coincident with rise in air temperatures. Nat Commun 15, 7581 (2024). https://doi.org/10.1038/s41467-024-52093-z Detailed rock glacier positions [lat°, lon°]: Star Peak [44.253,-120.417]Galena creek [44.645,-109.791]Sulphur creek [44.617,-109.756]Crater Mtn [44.023,-109.627]Old Hyndman [43.743, -114.106]Ferguson ranch [39.270, -107.194]Thomas lake [39.270,-107.155]Arapaho [40.020,-105.641]Mt Mears [38.018,-107.871]Mt Sneffels [38.010,-107.781]Teakettle Mtn [38.011,-107.768]Twin Sisters [37.762,-107.803]Pine creek [37.078,-118.450]Birch creek [37.065,-118.431]Cardinal Mtn N [37.011,-118.414]Cardinal Mtn S [37.008,-118.409]. Names of individual displacement files: Short-name-of-rock-glacier_year1_year2_correlation-window-size_search-window-size_xxx.txt/.csvxxx is either 'helm' indicating that the two orthoimages have been coregistered using Helmert transformation, or 'filt' indicating Helmert transformation and filtering of grid-based measurements for outliers. Data columns of each file: X: UTM coordinate, Easting of displacement measurement point Y: UTM coordinate, Northing of displacement measurement pointdx: displacement component in eastdy: displacement component in northlength: pythagoras of dx and dy (vector length)direction: azimuth of vector (from North, clock-wise)max_corrcoeff: correlation coefficient of displacement matchavg_corrcoeff: background correlation coefficent at a matching poistion.美国落基山脉及以西地区选定岩质冰川的两年间侧向位移数据集。位移量通过对美国地质调查局存档的重复正射影像开展影像相关法测量获得，所用相关软件为CIAS（http://mn.uio.no/icemass）。 本数据集为下述学术论文的原始配套数据，该论文包含本次测量的更多细节： Kääb, A., Røste, J. 美国境内岩质冰川普遍随气温升高同步加速运动. 自然通讯, 15, 7581 (2024). https://doi.org/10.1038/s41467-024-52093-z 岩质冰川精确位置[纬度°，经度°]： 星峰[44.253,-120.417]、加莱纳溪[44.645,-109.791]、硫磺溪[44.617,-109.756]、火山口山[44.023,-109.627]、老欣德曼[43.743, -114.106]、弗格森牧场[39.270, -107.194]、托马斯湖[39.270,-107.155]、阿拉帕霍[40.020,-105.641]、米尔山[38.018,-107.871]、斯涅弗尔斯山[38.010,-107.781]、茶壶山[38.011,-107.768]、双子峰[37.762,-107.803]、派恩溪[37.078,-118.450]、伯奇溪[37.065,-118.431]、红雀山北[37.011,-118.414]、红雀山南[37.008,-118.409]。 单条位移数据文件的命名格式为：[岩质冰川简称]_[年份1]_[年份2]_[相关窗口尺寸]_[搜索窗口尺寸]_xxx.txt/.csv，其中xxx取值为'helm'时，表示两幅正射影像已通过赫尔默特变换完成配准；取值为'filt'时，表示已完成赫尔默特变换并针对基于网格的测量值进行异常值过滤。 各数据文件的字段说明如下： X：位移测量点的通用横轴墨卡托（UTM）坐标系东向坐标 Y：位移测量点的通用横轴墨卡托（UTM）坐标系北向坐标 dx：东向位移分量 dy：北向位移分量 length：dx与dy的勾股模长（位移矢量长度） direction：位移矢量的方位角（以正北为基准，顺时针计量） max_corrcoeff：位移匹配的相关系数 avg_corrcoeff：匹配位置处的背景相关系数