冰川
地质学
仰角(弹道)
数字高程模型
冰川学
摄影测量学
冰川物质平衡
大地基准
遥感
大地测量学
北极的
高分辨率
自然地理学
地貌学
地理
海洋学
几何学
数学
岩土工程
水文地质学
变质岩石学
作者
Kristaps Lamsters,Jurijs Ješkins,Ireneusz Sobota,Jānis Karušs,Pēteris Džeriņš
出处
期刊:Remote Sensing
[MDPI AG]
日期:2022-02-21
卷期号:14 (4): 1029-1029
被引量:17
摘要
Unmanned Aerial Vehicles (UAVs) are being increasingly used in glaciology demonstrating their potential for the generation of high-resolution digital elevation models (DEMs) that can be further used for the evaluation of glacial processes in detail. Such investigations are especially important for the evaluation of surface changes of small valley glaciers, which are not well-represented in lower-resolution satellite-derived products. In this study, we performed two UAV surveys at the end of the ablation season in 2019 and 2021 on Waldemarbreen, a High-Arctic glacier in NW Svalbard. We derived the mean annual glacier surface velocity of 5.3 m. The estimated mean glacier surface elevation change from 2019 to 2021 was −1.46 m a−1 which corresponds to the geodetic mass balance (MB) of −1.33 m w.e. a−1. The glaciological MB for the same period was −1.61 m w.e. a−1. Our survey includes all Waldemarbreen and demonstrates the efficiency of high-resolution DEMs produced from UAV photogrammetry for the reconstruction of changes in glacier surface elevation and velocity. We suggest that glaciological and geodetic MB methods should be used complementary to each other.
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