Dataset and codes for 'Climatic control on seasonal variations of glacier surface velocity' by Nanni et al., submitted in TC

This repository contains the codes and processed data used to retrieve 10-day changes in glacier surface velocity over the Western Pamir. The supp_CODES.zip contains all details and codes to use COSI-CORR (http://www.tectonics.caltech.edu/slip_history/spot_coseis/) to process a large batch of satellite images. The images can be downloaded directly via https://earthexplorer.usgs.gov/ or https://scihub.copernicus.eu. Please read the Methods and Data section of the associated manuscript for details. The Matrix_velocities.zip contains, for each of the 48 investigated glaciers, the DEM, X, Y (NANNI_2022_supp_glacier_centreline_DEM_XY_1px_30m_1.txt) as well as a matrix of n*m with m the distance along flow and n the number of time step over which the velocity is calculated (NANNI_2022_supp_glacier_centreline_vel_matrix_1px_30m_1.txt), ans the associated figure that show the multi year velocity changes together with the one year average and the along centreline profiles. An example is shown in the two figures for glacier 48 in the main repository. The NANNI_2022_supp_glacier_characteristics file contains the glacier characteristics (48*8), as shown in the associated figures. The NANNI_2022_supp_pickedpoints_migration_AUTUMN/SPRING contains the automatically picked points for the onset of the acceleration in Spring and Autmun for each glacier. The headers contains the information, and the files contains is shown in the associated figure. The position of each 48 glacier is shown in the associated figure. Please contact me for any question.本仓库收录了用于检索西帕米尔高原冰川表面流速10日变化的代码与预处理后数据。其中supp_CODES.zip内含使用COSI-CORR（http://www.tectonics.caltech.edu/slip_history/spot_coseis/）批量处理卫星影像所需的全部细节与运行代码。卫星影像可直接通过https://earthexplorer.usgs.gov/ 或https://scihub.copernicus.eu 下载获取。详细操作请参阅相关学术论文的方法与数据章节。 Matrix_velocities.zip 包含本次研究覆盖的48条冰川的全套数据：每条冰川对应的数字高程模型（DEM）、X与Y坐标文件（NANNI_2022_supp_glacier_centreline_DEM_XY_1px_30m_1.txt），以及一个n×m的流速矩阵——其中m为沿冰川流向的距离维度，n为计算流速所用的时间步长总数，对应文件为NANNI_2022_supp_glacier_centreline_vel_matrix_1px_30m_1.txt，同时附带用于展示多年流速变化、年平均流速及沿中心线剖面的配套图表。本仓库主目录中以第48号冰川为例，提供了两张对应示例图。 文件NANNI_2022_supp_glacier_characteristics 收录了48条冰川的特征参数（共48行×8列），相关可视化效果详见配套配图。 文件夹NANNI_2022_supp_pickedpoints_migration_AUTUMN/SPRING 包含各冰川春季与秋季加速起始时刻的自动拾取点数据，文件头部包含元数据信息，文件内容的可视化展示详见配套配图。48条冰川的空间分布位置已在配套配图中呈现。如有任何疑问，欢迎联系作者。