&Emsp; Glacier surges are an unusual undulating instability of ice flow, and a complete inventory of surging glaciers is important for regional mass balance studies and assessment of glacier-related hazards. Glacier surge events in the High Mountains of Asia (HMA) are widely reported. Using estimated elevation changes from multiple DEM sources obtained from the 1970s to 2020, and morphological changes from 1986 to 2021, we present here an inventory of new surge glaciers in the HMA. The inventory includes 890 surging and 336 surge-like glaciers, each assigned metrics for surging characteristics and surge potential. Compared to HMA's previous surge glacier inventory, our inventory is theoretically more complete due to the longer observation period. This data repository contains the surge glacier inventory and maps of glacier elevation change. Inventories are stored in GeoPackage (.gpkg) and ESRI shapefile format (.shp), which is represented by glacier faces (from GAMDAM2) or surface points with geometric attributes. Multi-temporal elevation change maps of identified surge glaciers are divided into 1×1° plots and stored in GeoTiff (*.tif) format. A detailed description of the dataset (including file contents and attribute information) can be found in the metadata file (README.txt).
| collect time | 1970/01/01 - 2010/12/31 |
|---|---|
| collect place | Asian Alpine |
| data size | 667.9 MiB |
| data format | shp,gpkg,tif |
| Coordinate system |
&Emsp;In this study, we established a new inventory of morphological changes in HMA surge glaciers based on glacier surface elevation changes over 4 years. Three elevation change datasets based on four elevation sources (KH-9 DEM, NASA DEM, COP30 DEM, and HMA DEM) and a long-term Landsat image series were used to assess the presence of typical surge features over two time periods (1970-2000 and 2000-2020). A total of 890 surging glaciers and 336 probable or possible surging glaciers were identified in the HMA. Compared to the most recent inventory of surging glaciers in the HMA, our inventory includes 253 previously unrecognized surging glaciers.
&Emsp;(Terrain Mission) data reprocessed primarily from C-band SRTM (Shuttle Radar).
&Emsp;Good quality of data
This work is licensed under a
Creative
Commons Attribution 4.0 International License.
| # | title | file size |
|---|---|---|
| 1 | 01_HMA_surging_glacier_inventory_gamdam_v2.zip | 30.4 MiB |
| 2 | 02_HMA_surging_glacier_inventory_gamdam_v2_point.zip | 202.5 KiB |
| 3 | 03_2010s_cop_elev_diff_surging_glacier.zip | 140.1 MiB |
| 4 | 04_2010s_hma8m_elev_diff_surging_glacier.zip | 315.5 MiB |
| 5 | 05_1970s_kh9_elev_diff_surging_glacier.zip | 181.7 MiB |
| 6 | _ncdc_meta_.json | 5.3 KiB |
©Copyright 2005-. Northwest Institute of Eco-Environment and Resources, CAS.
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