Abstract Arctic coasts are sensitive indicators of polar environment change. Here we present the results of a study that examines the coastal morphodynamics of the Calypsostranda coastline in Svalbard (High Arctic) between 2007 to 2017 and compare these short-term changes to previous studies for the period 1936–2007. During the 2007–2017 study period, the study area lost ca. 10,710 m2, at a mean Net Shoreline Movement (NSM) of −1.86 m and End Point Rate (EPR) −0.19 m/yr. Erosion also dominated between 1936–2007, −28,800 m2, at a mean NSM of −4.99 m and EPR −0.07 m/yr. Using EPR and Linear Regression Rate (LRR) parameters, we divide the Calypsostranda coastline into eroding and aggrading zones. The overall pattern of coastline change during the two study periods is similar, but the rate of erosion is higher in the recent interval, reflecting stronger climate-driven processes. Recent climate warming in the study area has been accompanied by an intensification of extreme events such as storms (e.g. ocean swell). The situation is becoming more pronounced due to the progressively reduced period of winter shore ice. Depending on the anemometric conditions, the Calypsostranda coast is modified by wind waves, and consequently longshore currents and associated sediment movement.

中文翻译：

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从遥感、实地调查和 GIS 综合评估 Calypsostranda（斯瓦尔巴群岛）沿岸的海岸线变化

摘要 北极海岸是极地环境变化的敏感指标。在这里，我们展示了一项研究的结果，该研究检查了 2007 年至 2017 年间斯瓦尔巴群岛（高北极）的 Calypsostranda 海岸线的海岸形态动力学，并将这些短期变化与之前 1936 年至 2007 年期间的研究进行了比较。在 2007-2017 年的研究期间，研究区损失了大约。10,710 平方米，平均净海岸线运动 (NSM) 为 -1.86 米，终点速率 (EPR) 为 -0.19 米/年。在 1936-2007 年间，侵蚀也占主导地位，-28,800 m2，平均 NSM 为 -4.99 m，EPR 为 -0.07 m/yr。使用 EPR 和线性回归率 (LRR) 参数，我们将 Calypsostranda 海岸线划分为侵蚀区和加积区。两个研究期间海岸线变化的总体格局相似，但在最近的时间间隔内侵蚀率较高，反映更强的气候驱动过程。研究区最近的气候变暖伴随着风暴（例如海浪）等极端事件的加剧。由于冬季海岸冰期逐渐减少，这种情况变得更加明显。根据风速条件，Calypsostranda 海岸会受到风浪的影响，因此会受到沿岸水流和相关沉积物运动的影响。