Glacier inventory Austrian Silvretta 2017/2018

The glacier inventory data set includes shape files of glacier margins for the Austrian Silvretta for the year 2017 (Vorarlberg) and 2018 (Tyrol). The glacier outlines were delineated manually based on older Austrian glacier inventories and high resolution LiDAR data acquired by the Federal Administrations of Tyrol and Vorarlberg. The 46 glaciers of the Austrian Silvretta cover 13.1±0.4 km² in 2017/18, which is only 32±2% of their LIA extent of 40.9±4.1 km². Since the last inventory in 2006, three glaciers were gone.

本冰川编目数据集包含奥地利西尔夫雷塔（Silvretta）地区2017年（福拉尔贝格州）与2018年（蒂罗尔州）的冰川边界形状文件（shape files）。该冰川轮廓系依托奥地利旧版冰川编目，以及蒂罗尔州与福拉尔贝格州联邦管理局获取的高分辨率激光雷达（LiDAR）数据，通过人工勾绘完成。2017至2018年间，奥地利西尔夫雷塔地区的46条冰川总面积达13.1±0.4 km²，仅为其小冰期（Little Ice Age, LIA）时期总面积40.9±4.1 km²的32±2%。自2006年上一次冰川编目普查以来，已有3条冰川完全消融消失。