A new inventory of High Mountain Asia surge-type glaciers derived from multiple elevation datasets since the 1970s

Surges are among the main sources of glacier hazards and complete surge-type glacier inventories are required for assessing glacier-related hazards. Glacier surge events in High Mountain Asia (HMA) are widely reported. Through the estimated elevation changes from multiple DEMs sources that acquired since 1970s (KH-9), here we present a new surge-type glacier inventory across HMA. The inventory has incorporated 1015 surge-type glaciers during the last four decades (1970s-2010s) with assigned indicators of surge possibility. Compared to previous surge-type glacier inventory in HMA, our inventory is theoretically more complete with the much longer observation period. The inventory is stored in the format of GeoPackage (*.gpkg) and ESRI Shapefile format (*.zip), which has integrated the geometric attributes (from RGI6.0) of each glacier. Detailed description including the attributes information can be found in the associate metadata file.

冰川跃动是冰川灾害的主要成因之一，完整的跃动型冰川名录是开展冰川相关灾害评估的必要基础。高亚洲地区（High Mountain Asia, HMA）的冰川跃动事件已有广泛报道。本研究依托自20世纪70年代以来获取的多源数字高程模型（Digital Elevation Models, DEMs，含KH-9系列影像）反演得到的高程变化数据，构建了覆盖高亚洲地区的全新跃动型冰川名录。该名录收录了1970年代至2010年代近40年间的1015条跃动型冰川，并为每条冰川赋予了跃动可能性判定指标。相较于此前已有的高亚洲地区跃动型冰川名录，本名录观测周期更长，理论覆盖更为全面。本名录采用GeoPackage（*.gpkg）与ESRI形状文件（*.zip）两种格式存储，整合了每条冰川的几何属性数据（源自Randolph Glacier Inventory 6.0, RGI6.0）。包含属性信息在内的详细说明可查阅配套元数据文件。

搜集汇总

背景与挑战

背景概述

该数据集提供了一个高亚洲地区涌浪型冰川的新清单，基于20世纪70年代以来的多源高程数据，包含1015条冰川并标注了涌浪可能性指标。相比以往清单，其观测周期更长、理论上更完整，数据以GeoPackage和Shapefile格式存储，集成了冰川的几何属性。该清单可用于评估冰川相关灾害，支持冰川变化研究。