This study explores the ice flow acceleration (21.1%) of Pedersenbreen during 2016–2017 after the extremely warm winter throughout the whole Arctic in 2015/2016 using in situ data and quantitatively analyses the factors contributing to this acceleration. Several data sets, including 2008–2018 air temperature data from Ny-Ålesund, ten-year in situ GPS measurements and Elmer/Ice ice flow modelling under different ice temperature scenarios, suggest that the following factors contributed to the ice flow acceleration: the softened glacier ice caused by an increase in the air temperature (1.5°C) contributed 2.7%–30.5%, while basal lubrication contributed 69.5%–97.3%. The enhanced basal sliding was mostly due to the increased surface meltwater penetrating to the bedrock under the rising air temperature conditions; consequently, the glacier ice flow acceleration was caused mainly by an increase in subglacial water. For Pedersenbreen, there was an approximately one-year time lag between the change in air temperature and the change in glacier ice flow velocity.

这项研究使用原位数据探索了2015/2016年整个北极极暖的冬季之后，在2016-2017年间Pedersenbreen的冰流加速（21.1％），并定量分析了促成这种加速的因素。几个数据集，包括十年来原地的Ny-Ålesund的2008-2018年气温数据GPS测量和不同冰温情景下的Elmer / Ice冰流模型表明，以下因素促成了冰流加速：气温升高（1.5°C）导致的软化冰川冰贡献了2.7％–30.5％ ，而基础润滑的贡献为69.5％–97.3％。基础滑动的增强主要是由于在上升的空气温度条件下，渗透到基岩的表层熔体水增加。因此，冰川冰流的加速主要是由于冰川下水的增加。对于Pedersenbreen，在气温变化和冰川冰流速变化之间存在大约一年的时间间隔。